+GF+ 9950 User guide

GF 9950 Six-Channel Transmitter

*3-9950-10.090*

3-9950-10.090 Rev. 1 01/23

Description

The 9950 is a multi-channel, multi-sensor transmitter designed to meet and exceed the
industry standards, and expectations for a small, compact, ¼” DIN transmitter. The power
and versatility of the 9950 allows the use of up to six GF sensors to manage complex water
treatment applications.

The 9950 analyzer supports all like sensors or a mix of any GF sensors. Sensor types and
accessories supported by the 9950 are GF Flow (frequency and/or digital S³L), pH/ORP,
Conductivity/Resistivity, Salinity, Temperature, Pressure, Level, Dissolved Oxygen and any
device that transmits a 4 to 20 mA signal when used with the single channel
3-8058 iGo® Signal Converter.

The 9950 base unit comes complete with two each 4 to 20 mA output, two additional dual 4
to 20 mA output modules can be installed to increase the number of 4 to 20 mA outputs to a
total of six outputs.

3-9950-10, -11

Four Conductivity sensor measurements are supported with either a single or dual channel
conductivity module. If six conductivity sensors are required, the use of a 3-2850-51-XX
can be added to the main S³L input terminals.

English

Operating Instructions (Refer to pg. 11)

• English

C

US

E171559

The 3-9950.393-3 Relay Module provides four binary inputs that are compatible with any
open collector or mechanical contacts, such as level switches, fl ow switches, pressure
switches or other devices. The 9950 offers advanced features such as derived functions,
advanced multiple relay modes (Boolean logic) and timer-based relay functions.

The 9950 Modbus Module allows for remote access to primary and secondary
measurements, derived functions, status of current loop outputs and relays, over a serial
RS485 Modbus automation network.

The 9950 supports the following modules:

• Four Channel Mechanical Relay Module

• Two Mechanical and Two Solid State
Relay Module

• Two Mechanical Relays and Four Binary
Inputs Module

• Single Channel Conductivity
Resistivity Module

• Dual Channel Conductivity Module

• Dual Channel 4 to 20 mA Current Loop
Output Module

• Modbus Module

Compatibility

The 9950 is compatible with all GF products
listed in the column to the right.

• pH/ORP electrodes require the GF 2751

DryLoc® Sensor Electronics
(sold separately).

• Conductivity/Resistivity measurement

requires the GF 2850 Conductivity/Resistivity
electronics or a single or dual conductivity
module and proper conductivity sensor
(sold separately).

Sensor

Model

515 X

525 X
2000 X
2100 X
2250 X
2350 X
2450 X
2507 X
2536 X

2537-5 X

2540 X
2551 XX
2552 XX
258X XX

U1000 XX
U3000 XX
U4000 XX

2260 X
2270 X
2290 X
2291 X

2610-51 X

2751 X

2850-51-XX* X

2850-61* X
2850-63* X

Freq

Output

Digital (S3L)

Output

Requires

8058-1

* No conductivity module required

Start-Up Guide

Safety Information

• Please read entire manual before unpacking, setting up or
operating this equipment. Adhere to all danger, warning and
caution statements. Failure to do so could result in serious
injury to the operator or damage the equipment. Make sure the
protection provided by this equipment is not impaired, do not use
or install this equipment in any manner other than specifi ed in
this manual.

• This unit is designed to be connected to equipment which can
be hazardous to persons and property if used incorrectly.

• Read and understand all associated equipment manuals and

Warning / Caution / Danger

Indicates a potential hazard. Failure to follow all warnings
may lead to equipment damage, injury, or death

Electrostatic Discharge (ESD) / Electrocution Danger

Alerts user to risk of potential damage to product by ESD

Electrocution Danger

Alerts user to risk of potential of injury or death via
electrocution

Personal Protective Equipment (PPE)

Always utilize the most appropriate PPE during installation
and service of GF products

safety warnings before using with this product.

• Remove power to unit before wiring connections.

• Wiring connections to this product should only be performed by

NOTE / Technical Notes

Highlights additional information or detailed procedure

qualifi ed personnel.

• Do not use unit if front panel is cracked or broken.

Before commissioning the device, make sure the supply voltage matches the voltage specifi cations on the nameplate.
For DC power input and Loop current regulated voltage, use UL60950-1 or UL61010-1 certifi ed power supply.
Power supply shall also be rated for operation at 4000 m altitude. Provide a suitable switch or circuit breaker the installation.
This switch must be located close to the device (easily reached), and marked as a circuit breaker. The switch or circuit breaker to be
used for power disconnect shall be certifi ed to IEC 60947-1 and IEC 60947-3, per IEC 61010-1, Clause 6.11.4.2.
Overcurrent protection (rated > 10 A) is required for the power cable.

Installation

For future reference, for each installation, it is recommended to record the part number and serial number of each of the
components listed here:

Facility Tag Number or System ID (user assigned):__________________

_
Base unit 3-9950-____ S/N ___________________

Relay Module 3-9950.393-____ S/N ___________________

Single Channel Cond./Resist. Module 3-9950.394-____ S/N ___________________
Dual Channel 4-20 Current Loop Out. Module 3-9950.398-____ S/N ___________________
Dual Channel Conductivity Module 3-9950.394-2 S/N ___________________
Modbus Module 3-9950.395-M S/N ___________________

Panel Mount Installation

Panel Cutout

92 x 92 mm

(+ 0.8, - 0 mm)

3.6 x 3.6 in.

(+0.031, -0 in.)

Panel Cutout

92 x 92 mm

(+ 0.8, - 0 mm)

3.6 x 3.6 in.

(+0.031, -0 in.)

Panel Cutout

92 x 92 mm

(+ 0.8, - 0 mm)

3.6 x 3.6 in.

(+0.031, -0 in.)

minimum

clearance

25 mm

(1 in.)

Panel Cutout

92 x 92 mm

(+ 0.8, - 0 mm)

3.6 x 3.6 in.

(+0.031, -0 in.)

panel

gasket on
front side
of panel

MODULE 1

DC POWER

USB

RELAY MODULE

PWR+

PWR–

Loop1+

DC Power

–

12-32 VDC

Loop1

0.50A Max

Loop2+

Loop Voltage

–

12-32 VDC

Loop2

0.03A Max

V+

FREQ

DATA

CH1

GND

V+

CH2

FREQ

DATA

N

GND

L

50-60 Hz, 24VA Max

100-240 VAC~

Made in U.S. from U.S. and imported parts

MODULE 2

quick-clip

mounting

bracket

Allowable panel thickness 2.36 mm (0.093 in.) to 33 mm (1.31 in.)

2

GF 9950-10 Six Channel Transmitter

Start-Up Guide

Terminal Identifi cation

Prepare the transmitter installation location. If the back of the transmitter is diffi cult to access when
installed, wire the removable terminal blocks fi rst, then install it completely.

DC Power Terminals

RELAY MODULE

PWR+

PWR–

Loop 1+

Loop 1–

Loop 2+

Loop 2–

FREQ

DATA

GND

CH2 CH1

FREQ

DATA

GND

11-24 VDC

+V

+V

USB

N

L

100-240 VAC~

Made in U.S. from U.S. and imported parts

MODULE 1

MODULE 2

Sensor Input 2
(Frequency/S

AC Power Terminals

Sensor Input 1
(Frequency/S

3

L)

3

L)

The 9950 requires regulated

12 to 32 VDC, ±10% regulated
(24 VDC nominal) or 100­240 VAC at 50-60 Hz from an

external power supply
(not supplied).

Maximum current draw is:

500 mA with DC power
24 VA with AC power

DC Power Terminal 3-9950-10 or 3-9950-11

Required by the instrument

• 12 to 32 VDC, ±10% regulated, 0.5 A MAX. DC power input and Loop current regulated voltage require the use of a
UL60950-1 or UL61010-1 certifi ed power supply. Power supply shall also be rated for operation at 4000 m altitude.

Current Loop Outputs 1 and 2

AC Power Terminal 3-9950-11 Only

Required by the instrument

• 100-240 VAC at 50-60 Hz, 24 VA MAX

Relay Module

Dependent on model

• 3-9950.393-1 Four mechanical relays rated at 5A, 250 VAC or 5A, 30 VDC

• 3-9950.393-2 Two mechanical relays, 5A 250 VAC or 30 VDC, and two solid state relays rated at 50 mA, 30 VAC or 30 VDC

• 3-9950.393-3 Two mechanical relays, 5A 250 VAC or 30 VDC, and four binary inputs rated at 6 mA, 10 VDC to 24 VDC

Modules 1 and 2

• 3-9950.394-1 Single Channel Direct Conductivity/Resistivity Module

• 3-9950.394-2 Dual channel Conductivity Module

• 3-9950.395-M Modbus Module

• 3-9950.398-2 Dual Channel 4 to 20 mA Current Loop Output Module

Sensor 1 and Sensor 2: Digital (S3L)/Frequency Input

• V+: +5 VDC out to sensor (black wire)

• FREQ: Frequency input signal from sensor (red wire)

• S3L DATA: Digital input signal from sensor (red wire)

• GND: Sensor ground (white wire or silver wire from paddle wheel fl ow sensor)

Loop Outputs

• Two Passive 4 to 20 mA current loop outputs 12 - 32 VDC, ±10% regulated (30 mA Max)

• Up to 4 additional Loop Outputs via the Dual Channel 4 to 20 mA Output Module

ModBus Module

• Six Channel Primary and Secondary values

GF 9950-10 Six Channel Transmitter

3

Sensor Wiring

515/8510

525 2536/8512 2540

FLOW

2000 2100 2507

Start-Up Guide

9950 Frequency

DC POWER

Loop

Black

Red

No connection

White

FLOW

Loop

+V

FREQ

X

DATA

GND

+V

CH2 CH1

FREQ

+V

FREQ

DATA

GND

Technical Notes:

• See corresponding product manuals for maximum
cable length.

• Maintain cable shield through cable splice.

• Route sensor cable away from AC power lines.

• Select "Yes" to CH # Flow 515/525 when setting up
the input on the 9950. On the 515/8510 and 525
installations, connect the silver (shield) wire to earth
ground in case of EMI noise interference.

2537-5

S1

2250 2350 2450

2551* 2751 2850

* 2551-XX-21, -41
Display Magmeter

NOTE: The 2850 has no SHIELD wire.

Blk Red Shld

9950 S3L Inputs

Technical Notes:

• Wiring terminals on the 2537 are rated for 16 to 22
AWG wires.

DC POWER

-

+

Black

Red

White

S2

No connection

Loop

Loop

+V

X

FREQ

DATA

GND

+V

CH2 CH1

FREQ

+V

FREQ

DATA

GND

• The cable must be 7 mm to 10 mm in diameter
(0.275 in. to 0.394 in.) to seal properly in the
liquid-tight connector.

• The conduit ports have ½ inch NPT threads.
After routing the cables, seal the port with a liquid-tight
conduit connector (3-9000.392-1) or with conduit.

• The 2537 models connect to the 9950 via the
Digital (S3L) output.

Technical Notes:

• Sensor dependent, see sensor manual for maximum

9950 S3L Inputs

cable length.

• Maintain cable shield through cable splice.

DC POWER

• Route sensor cable away from AC power lines.

• Connect the silver (shield) wire to earth ground in case
of EMI noise interference.

• The 9950 is not compatible with the 3-2580-63, dual
channel conductivity device.

Sensor Terminal Connections

Sensor

Terminal

1 +V Shield +V
2 S3L/Freq GND S3L
3 GND S3L GND
4 Not Used +V Not Used

2551 2751 2850

Black

No connection

White

Shield

Loop

Loop

+V

X

FREQ

DATA

GND

+V

CH2 CH1

FREQ

+V

FREQ

DATA

GND

3-2610-51

Red

Blue

Green
Brown

+

–

No
connection

Power Supply

12 to 32 VDC

White

Black

Shield

PWR+

PWR–

Loop1+

Loop1–

Loop2+

Loop2–

FREQ

DATA

GND

CH2 CH1

FREQ

DATA

GND

DC POWER

+V

+V

PWR +

PWR –

+V

FREQ

DATA

GND

Technical Notes:

The wiring of the 3-2610-51 is non-standard:

• RED is 12 to 24 VDC (PWR +)

• WHITE is Data

• BLACK is VDC Ground (PWR -)

• A jumper MUST be installed between PWR- and

3

L GND.

S

WARNING: When using more than one DO sensor it is
recommended to:

1. Not to use daisy chain wiring

2. Wire directly to CH1 or CH2 sensor input terminals

3. Share the loads across both input channels

NOTE: 3-2610-51 only.

9950 S3L Inputs

4

GF 9950-10 Six Channel Transmitter

Start-Up Guide

Sensor Wiring

2551-XX-11

Blind Magmeter

Sensor

Terminal

1 Black (+V)

3

S L

Signal

Black

No connection

Red

White

Shield

9950 S3L Inputs

DC POWER

PWR+

PWR–

4

Loop1+

Loop1–

3

Loop2+

Loop2–

+V

X

FREQ

DATA

GND

+V

CH2 CH1

FREQ

DATA

GND

+V

FREQ

DATA

GND

Frequency

Black

Red

No connection

White

Shield

Only in case of EMI interference.
Refer to Frequency Output Technical Notes (2551 & 2552) at right.

2 Red (S3L/Freq)
3 White (GND)
4 Not Used

Input Wiring for 2551 and 2552 sensors

• Either Frequency or Digital (S3L) may be used.

• GF recommends confi guring these sensors with the Digital (S3L) output to display

reverse fl ow (negative numbers).

• Input type is selected by choosing between “SENSOR FREQ” and "SENSOR S3L" in
the FLOW sensor type INPUT menu (Refer to page 11).

2552

9950 Frequency

PWR+

PWR–

4

Loop1+

3

Loop1–

Loop2+

Loop2–

FREQ

X

DATA

GND

CH2 CH1

FREQ

DATA

GND

DC POWER

+V

+V

+V

FREQ

DATA

GND

2551 Technical Notes:

• When the blue jumper
illustrated here is
placed over both pins,
the 2551-XX-11 (Blind
Magmeter) outputs an
open collector frequency
signal. When the jumper
is removed (or placed
over one pin for storage)
the 2551-XX-11 outputs a
digital (S

3

L)

signal (recommended).

Frequency Output Technical
Notes (2551 & 2552):

• The frequency output will
be displayed as positive

fl ow regardless of the
fl ow direction.

• 5 VDC power required by
the 2551 & 2552 is supplied
by the 9950. No additional
power is required.

• Connect the silver wire
(shield) to earth ground
in case of EMI noise
interference.

Black

No connection

Brown
White

Blue

Shield

9950 S3L Inputs

DC POWER

PWR+

PWR–

Loop1+

Loop1–

Loop2+

Loop2–

+V

X

FREQ

DATA

GND

+V

CH2 CH1

FREQ

DATA

GND

+V

FREQ

DATA

GND

Black
Brown
Blue

White

Shield

No

X

connection

9950 Frequency

DC POWER

PWR+

PWR–

Loop1+

Loop1–

Loop2+

Loop2–

+V

FREQ

DATA

GND

FREQ

CH2 CH1

FREQ

+V

DATA

GND

+V

DATA

GND

2552 Technical Notes:

• The 2552 outputs an open
collector frequency signal that
can be connected to the 9950.

• Route sensor cable away
from AC power lines.

• Connect the silver (shield)

wire to earth ground in case
of EMI noise interference.

GF 9950-10 Six Channel Transmitter

5

Sensor Wiring

Start-Up Guide

No connection
No connection

2581

X
X

+V
FREQ
DATA
GND

9950

Digital (S3L)

DC POWER

PWR+

PWR–

Loop1+

Loop1–

Loop2+

Loop2–

+V

FREQ

DATA

GND

Ground (White)

+V

CH2 CH1

FREQ

DATA

GND

Data (Red)

Power cable

Output cable

Blue not used

Brown
Black

Not used

Shield

2581

Black

–

Red

24 VDC @ 1A min.
Power Supply

+

Shield (EMC enhancement)

No connection

No connection

X

X

+V
FREQ
DATA
GND

9950

Frequency

DC POWER

PWR+

PWR–

Loop1+

Loop1–

Loop2+

Loop2–

+V

FREQ

DATA

GND

+V

CH2 CH1

FREQ

DATA

GND

Frequency (Red)

Ground (White)

Blue not used

Brown
Black
Shield

2581

Output cable

Not used

6

GF 9950-10 Six Channel Transmitter

Power Wiring

Start-Up Guide

WARNING

DO NOT connect AC power to the DC version
THE 3-9950-10 MUST BE POWERED BY
12 - 32 VDC at 0.5 A.

3-9950-10

DC POWER

PWR+

PWR–

Loop1+

Loop1–

Loop2+

Loop2–

FREQ

DATA

GND

CH2 CH1

FREQ

DATA

GND

and imported par

Red

Red

+V

+V

Red

Black

Black

Black

+

Power Supply

–

12 to 32 VDC

PLC or Recorder

–

Loop Input

+

4 to 20 mA

PLC or Recorder

–

Loop Input

+

4 to 20 mA

Caution:

For DC power input and loop current regulated
voltage, use UL60950-1 or UL61010-1 certifi ed
power supply. Power supply shall also be rated
for operation at 4000 m altitude.

DC POWER

PWR+

PWR–

Loop1+

Loop1–

Loop2+

Loop2–

+V

FREQ

DATA

GND

+V

CH2 CH1

FREQ

N

L

100-240 VAC~

50-60 Hz, 24VA Max

Made in U.S. from U.S. and imported par

DATA

GND

DC power optional

Red

Red

Caution:
Electrical shock hazard exists!

Never connect live AC lines to the instrument.

3-9950-11

Red

Black

Black

Black

Neutral

Line

+

Power Supply

–

12 to 32VDC

PLC or Recorder

–

Loop Input

+

4 to 20 mA

PLC or Recorder

–

Loop Input

+

4 to 20 mA

100-240 AC

External DC Power is
required for the current
loops.

CAUTION

Keep AC power separate from
sensor and signal wiring to prevent
interference and damage to the
9950 Transmitter.

GF 9950-10 Six Channel Transmitter

7

Start-Up Guide

Relay Module Wiring

• Terminals accept 12 to 22 AWG wire.

• Strip 10 to 12 mm (0.4 to 0.5 in.) of insulation from wire tips and tin bare ends to eliminate fraying.

• Insert wire tip or ferrule completely into the terminal and secure with the screw.

• Do not allow any AC leads that may be connected to the internal relays to come in contact with low voltage wiring.

3-9950.393-1 and 3-9950.393-2

Relay 1: The alarm is OFF during normal operation, and will

go ON when relay energizes according to 9950
Relay settings.

Relay 4: The valve is ON during normal operation, and will

go OFF when relay energizes according to 9950
Relay settings.

NO = normally open (closes when energized)
NC = normally closed (opens when energized)

Mechanical Relays Rating: 5A 250 VAC, 5A 30 VDC
Solid State Relays Rating: 50 mA 30V AC/DC

(for 309950.393-2 relay 1 & 2)

3-9950.393-3

The alarm is OFF during normal operation, and will go ON when the
relay energizes according to 9950 Relay settings.

Binary input 4 will be ON when the tank level is above the level
switch, Binary Input 4 will be OFF when the tank level is below the
level switch.

Binary Input Ratings

Maximum Input voltage
(without damage)

Minimum Input voltage
(without damage)

Maximum input voltage for
signal “Off” (low or "0")

30 VDC

-5 VDC
(no operation below 0 VDC)

1.5 VDC

Minimum input voltage
for signal “On” (high or "1")

Maximum current draw for
signal “0” (low)

Minimum current draw
for signal “1” (high)

Typical current draw
for signal “1” (high)

3.0 VDC

<500 ADC

500 A

6.0 mA at 30 VDC, 4.8 mA at 24 VDC,

2.4 mA at 12 VDC, 1.0 mA at 5 VDC

3-9950.393-1

NO 1

RELAY 1

RELAY 2

RELAY 3

RELAY 4

3-9950.393-3 Internal Power

RELAY 1

RELAY 2

No Connection

BINARY INPUT 1
BINARY INPUT 2

BINARY INPUT 3
BINARY INPUT 4

3-9950.393-3 External Power

RELAY 1

RELAY 2

No Connection

BINARY INPUT 1
BINARY INPUT 2

BINARY INPUT 3
BINARY INPUT 4

N/C 1

COM 1

NO 2

N/C 2

COM 2

NO 3

N/C 3

COM 3

NO 4

N/C 4

COM 4

Flow

9950.393 Internal Power

N/O 1

N/C 1

COM 1

N/O 2
N/C 2

COM 2

SW1

SW2

SW3

SW4

SW COM

9950.393 External Power

N/O 1

N/C 1

COM 1

N/O 2

N/C 2

COM 2

SW1

SW2

SW3

SW4

SW COM

DC power

AC or DC

power

X

X

+

-

Level Switch

Level Switch

ALARM!

AC or DC

power

ALARM!

AC or DC

ALARM!

Valve

power

Level

AC or DC

power

Level

Power

Switch

INT

EXT

EXT

If an externally powered sensor is connected with the
3-9950.393-3 module, set the power switch to the EXT
position. The module can power external sensors by

switching the power switch to the INT position. Maximum

INT

8

GF 9950-10 Six Channel Transmitter

power that can be drawn from the module is 6mA at 30 VDC.

Start-Up Guide

Relay Module Wiring

8059 External Relay Module

3-8059-4AC Four external dry-contact relays with power supply
3-8059-4 Four external dry-contact relays
3-8050.396 RC Filter Kit
6205-0002 DIN Rail, 1m
6205-0003 End Clips, DIN Rail

• The 9950-10/11 will support up to eight (8) relays, though only four actually fi t directly inside its compact ¼ DIN enclosure.
8059 External Relay Modules of four relays may be connected to the 9950 via digital (S³L) at the I/O Module (this does NOT­consume a sensor input channel).

• External relays are completely independent of internal relays, so it is not necessary to install an internal relay module into the
9950 to use the external relays. In the 9950 menus, external relays will always be identifi ed as Relays A, B, C, and D.

• Digital (S³L) pass-thru terminals on the 8059 can help to reduce sensor wiring congestion at the 9950.
See the 8059 instruction manual for details.

• External Relays mount on DIN rail inside a panel and can be tested remotely from the 9950, or locally with switches built-in for
convenience. They also include LED relay status indicators, but the status of these and all relays is available at all times in a
single screen in the 9950 View mode.

• Any and all relays are freely assignable to any channel. Hysteresis and time delay are adjustable for each relay.

• It is perfectly acceptable to mix and match relay types between internal and external modules.
However, NOTE: The 9950 only allows external relays to be used in modes Off, Low, Hi, Window, Total, and Error.

• 8059 External Relay Modules contain dry-contact relays only. These electromechanical switches are suitable for many general­purpose applications, AC or DC, including AC loads up to 250 V.

• Switching active loads (most commonly inductive) can cause contact arcing suffi cient to damage relays. The RC Filter Kit or
“snubber” is available as an accessory to reduce or eliminate these damaging effects.

NC COM NO

RELAY A

Signet 3-8059 Relay Module

NC COM NO

RELAY B

COM

32:(5

LISTED

®

E171559

PASS-THRU

INPUT

+

S3L

-

+

S3L

-

NC COM NO

RELAY C

Test A

Test B

Test C

Test D

Relay A

Relay B

Relay C

Relay D

DC OUTPUT

+ -

NC C NO

NC C NO

RELAY B

RELAY A

Signet 3-8059 Relay Module

COM

POWER

LISTED

®

E171559

PASS-THRU

INPUT

+

S3L

-

+

S3L

S³L Connector{DC{AC

NC COM NO

RELAY D

AC or DC

Power

Test A

Test B

Test C

Test D

-

DC INPUT

- +

NC C NO

RELAY C

OUTPUT 24VDC

+ -

Relay A

Relay B

Relay C

Relay D

NC C NO

RELAY D

AC INPUT

L N

{

8059-4AC

Shield

NC C NO

RELAY A

Signet 3-8059 Relay Module

LISTED

®

E171559

INPUT

+

S3L

-

9950 S3L Inputs

DC POWER

PWR+

PWR–

Loop1+

Loop1–

Loop2+

Loop2–

+V

FREQ

DATA

GND

+V

CH2 CH1

FREQ

DATA

GND

NC C NO

RELAY B

COM

32:(5

PASS-THRU

+

PWR +

PWR –

+V

FREQ

DATA

GND

8059-4AC8059-4

+ -

NC C NO

RELAY D

Relay A

Relay B

Relay C

Relay D

AC INPUT

L N

NC C NO

RELAY C

Test A

Test B

Test C

Test D

S3L

OUTPUT 24VDC

-

NOTE: 9950-1 and 9950-2 do not support the 8059 external relay.

GF 9950-10 Six Channel Transmitter

9

Conductivity Module Wiring

Start-Up Guide

Loop Wiring

Red

Black

White

Shield

SHLD

TEMP

ISO GND

SIGNAL

3-9950.394-1

Single Channel

Conductivity Module

SHIELD (silver)
TEMP (white)

ISO GND (black)
SIGNAL (red)

3-9950.394-1

Single Channel Cond.

Shield

White

Black

Red

Shield

White
Black

Red

ISO GND

ISO GND

SHLD

TEMP

SIGNAL

SHLD

TEMP

SIGNAL

3-9950.394-2

Dual Channel

Conductivity Module

PLC

or

Recorder

–

+

PLC

or

Recorder

–

+

Power

Supply

–

3-9950.398-2

Dual Channel

4 to 20 mA Module

+

Loop A+

Loop A–

Loop B+

Loop B–

Loop A +
Loop A ­Loop B +
Loop B -

3-9950.398-2

Dual Channel 4-20mA

3-9950.395-M

Modbus Module

RS485

RCVR

PLC

+
–

Yellow

Brown

(Optional) Shield

D1 + RS485

D0 + RS485

GND

10

Shield recomended in
noisy environment

GF 9950-10 Six Channel Transmitter

Start-Up Guide

System Setup Menu

Keypad Functions

The four buttons of the keypad (   ENTER) are used to navigate display modes according to the descriptions in this table.
Notice the function of each button may change depending on the display mode.

This menu operation sets up the 9950 for basic function when
initially powered up or when the 9950 has ALL six channels set to
FACTORY.

1. Select desired language using the  and  arrows.

Press ENTER to save.

2. Press  to select the TIME FORMAT.

Press  or  to select 24 hour or AM/PM.
Press ENTER to save the format selection.

6. Press  to move to the next selection,

SET DECIMAL MARK.
Press  and use  or  to highlight desired decimal separator
(comma or decimal mark).
Press ENTER to save the decimal mark selection.

7. Press  to move to the next selection, SELECT UNITS.
Press  and scroll  or  to choose Metric or
U.S. Customary.
Press ENTER save unit selection.

3. Press the  move to the next selection, SET TIME.
Press  to scroll through hours, and minutes place values.
Use  or  to adjust the value.
Press ENTER to save the time selection.

4. Press  to move to the next selection, SET DATE FORMAT.
Press  to select the MM/DD/YYYY date format and  or  to
scroll through other format options.
Press ENTER to save the date format selection.

5. Press  to move to the next selection, SET DATE.
Press  to scroll through the days, months, and years.
Use  or  to adjust the number, and  to select the next
number.
Press ENTER to save the Date selection.

4

ENGLISH
FRANÇ

DEUTCH

ESPAÑOL

ENTER

TIME FORMAT

24 HOUR

TEXT 3

SET TIME

08:56:47

DATE FORMAT

TEXT 3

MM/DD/YYYY

SET DATE

TEXT 3

07/04/2022

SET DECIMAL MARK

TEXT 3

999.99

SELECT UNITS

TEXT 3

US CUSTOMARY

SETUP

TEXT 3

CHANNEL 1

PRESS ENTER

3

SETUP

CHANNEL 2

PRESS ENTER

SETUP

CHANNEL 3

SETUP

CHANNEL 4

SETUP

CHANNEL 5

SETUP

CHANNEL 6

EXIT STARTUP

24 HOUR

AM/PM

GERMAN
LANGUAGE

00:00:040

LANGUAGE

AM/PM

MM/DD/YYYY

DD/MM/YYYY
YYYY/MM/DD

LANGUAGE
LANGUAGE

ENTER

09:11:04

02/25/20162

AM/PM

02/25/2016

99.999

99,999

METRIC

U.S. CUSTOMARY

NONE
FACTORY

FLOW

pH
ORP
COND/RES

MM/DD/YYYY

DD/MM/YYYY

YYYY/MM/DD

OR

ENTER

saves
changes

8. Press  to move to the next selection SETUP CHANNEL

Press ENTER.
Use  or  to scroll through the sensor list and select another
sensor type to assign to the channel.
Press ENTER to save sensor type selected.

Press  to bypass channel 1 and scroll to any specific channel
(1-6) for set up.
NOTE: If no sensor is selected, it is recommended to select
NONE as sensor choice.

Press  to move to CHANNEL SOURCE.

Use  or  to scroll through the list of available sensors or
modules for the channel TYPE selected in step 8.
Press ENTER to save sensor source selected.
Repeat steps in number 8 to set up channels 2 through 6.
When done, press +

together one time exits to the

previous menu.
Press + together a second time to exit Easy Start Up.

DATE FORMAT

NAME

SAVING

100% SOLUTION

ENTER

saves
changes

LOOKING FOR

SENSOR TYPE

TEXT 3

NONE
S3L 2209291234

S3L 2209292345

MOD1A
MOD1B
FREQ1
FREQ1

ENTER

saves
changes

GF 9950-10 Six Channel Transmitter

11

Start-Up Guide

Password

Password Overview

The password is required to start editing. Once entered correctly, this password will not be needed for subsequent uses, until the
menu system is exited. The password will be required when the menu system is re-entered.

Your choice of password (STD or CODE) is selected in the Options Mode.

 STD

The standard (STD) password is     , pressed in sequence. This password is designed to protect the 9950 from
unintentional changes. It is best suited for systems where a group of people need to be able to change settings.

 CODE

The CODE default setting is 0000, adjustable to any 4-digit numerical code up to 9999. Using a personal code provides the
maximum degree of security. This code can be modifi ed in the Options mode.

Operation

Channel 1,3,5

display area

Channel 2,4,6

display area

Numeric
Values
or labels

Bar Graph

Numeric
Values
or labels

Bar Graph

Relay 1
Indicator LED

CH5

00.0 0

CH6

00.0 0

Backlight Sensor
(do not block)

Relay 2
Indicator LED

9999.9

9999.9

9999.9

9999.9

Relay 3
Indicator LED

UOM
UOM

99.9 9

UOM
UOM

99.9 9

ENTER

Relay 4
Indicator LED

4

Units of Measure
(GPM, pH, sec, %, etc.)

Units of Measure
(GPM, pH, sec, %, etc.)

Menu Navigation Keys

12

UP, DOWN keys

Scroll through Menu options or adjust values during editing
Press both together to exit a menu or escape without saving

GF 9950-10 Six Channel Transmitter

RIGHT key

Select item or character to edit

ENTER

ENTER key

Access menus
Save changes

Table of Contents

Description .......................................................................1

Compatibility .....................................................................1

Safety Information ............................................................2

Installation ........................................................................2

Terminal Identifi cation ......................................................3

Wiring ......................................................................... 4-10

Sensor Wiring ......................................................... 4-6

Power Wiring ..............................................................7

Modules Wiring .................................................... 8-10

System Setup Menu .......................................................11

Password .......................................................................12

Keypad Operation ..........................................................12

Warranty Information ......................................................13

Dimensions ....................................................................14

Module Installation .........................................................14

Plug-In Modules .............................................................15

Relay Modules ...............................................................15

Conductivity Loop and Modbus Modules ......................16

Signal Type: Frequency ................................................16

Signal Type: Digital (S3L) .............................................16

Signal Type: 4 to 20 mA ................................................17

Relay Functions .............................................................17

Relay Modes ............................................................ 17-19

Derived Functions ..........................................................20

Sensor-Specifi c Menus ............................................ 21-50

Flow .................................................................... 21-22

pH ....................................................................... 23-25

ORP .................................................................... 26-27

Conductivity/Resistivity ...................................... 28-29

Pressure ............................................................. 30-31

Level/Volume ...................................................... 31-34

Temperature ....................................................... 34-35

4 to 20 mA .......................................................... 36-37

Salinity ................................................................ 38-40

Dissolved Oxygen .............................................. 41-42

Relay Menus ............................................................ 43-57

Low ..........................................................................43

High .........................................................................44

Window IN or Window OUT ....................................45

Proportional Pulse ...................................................46

Pulse Width Modulation ..........................................47

Volumetric Pulse .....................................................48

Total Pulse ...............................................................49

United States Pharmacopeia ..................................50

Error Mode ..............................................................51

Binary Input .............................................................52

Timer ................................................................. 53-55

Multiple .............................................................. 56-57

Menu System .................................................................58

Common Menus ....................................................... 59-64

Loop Menus .............................................................59

Option Menu ........................................................ 60-63

View Mode ...............................................................64

Troubleshooting ....................................................... 65-66

Averaging .......................................................................67

LOG Current Loop Output .............................................67

Custom Measurements ............................................ 68-71

Calibration Procedures - pH .................................... 72-73

Calibration Procedure - ORP ................................... 74-75

Calibration Procedure - Conductivity/Resistivity ............76

Calibration Procedure - Salinity .....................................77

Calibration Procedure - Flow .........................................78

Calibration Error Messages ...........................................79

USP Limits......................................................................80

Modbus .........................................................................80

Modbus Communication Setting Menus ........................81

Maintenance ...................................................................81

Specifi cations ........................................................... 82-83

Ordering Information ......................................................84

Warranty Information

Refer to your local Georg Fischer Sales offi ce for the
most current warranty statement.

All warranty and non-warranty repairs being returned
must include a fully completed Service Form and
goods must be returned to your local GF Sales offi ce or
distributor.
Product returned without a Service Form may not be
warranty replaced or repaired.

GF products with limited shelf-life (e.g. pH, ORP,
chlorine electrodes, calibration solutions; e.g. pH buffers,
turbidity standards or other solutions) are warranted out
of box but not warranted against any damage, due to
process or application failures (e.g. high temperature,
chemical poisoning, dry-out) or mishandling (e.g. broken
glass, damaged membrane, freezing and/or extreme
temperatures).

GF 9950-10 Six Channel Transmitter

13

Dimensions

y

3-9950-10/-11

99.06 mm
(3.90 in.)

12 34

Side ViewFront View

90.73 mm
(3.57 in.)

82.60 mm
(3.25 in.)

99.06 mm
(3.90 in.)

Module Installation

ENTER

9950

MODULE 1

MODULE 2

102.37 mm
(4.03 in.)

Dual Channel
4 to 20 mA Module

Rounded
Corners

Important!

Ensure the rounded
corner of the module is
alligned with the rounded
corner of the module slot
before installing

91.44 mm
(3.60 in.)

CAUTION

Avoid Electrostatic Discharge (ESD).

The plug-in modules may be installed either before or after the
base unit is mounted. If the 9950 Base Unit will be mounted
using the provided quick clip mounting bracket, install plug-in
modules fi rst with power disconnected.

CAUTION

Exercise care when installing modules.
Do not bend connecting pins.

To install modules:

Remove power from the 9950. Carefully align pins and
connectors (do not bend connecting pins) and push module fi rmly
into place, then attach with screw(s) for Relay Modules only.

Note: Modules can be installed in either slot.

14

GF 9950-10 Six Channel Transmitter

Shown with Single Channel
Conductivit

Module installed in Module Slot 2

To move modules:

Remove power from the 9950.

For Relay Modules:

Unplug connectors, remove screw(s), and carefully pull
module straight out from the base unit. Do not bend the
connecting pins.

For Conductivity, Dual Channel 4 to 20 mA, and Modbus
Modules:

Unplug connectors and squeeze the two retaining tabs while
pulling module out of 9950.

WARNING

Relays may be connected to external
high-voltage power sources or multiple power
sources creating an electrocution hazard.

Plug-In Modules

a

bcd

Optional modules and accessories are available for the 9950:

a. Optional Relay Module
b. Optional Module 1
c. Optional Module 2

Each item is ordered separately. Modules are fi eld-replaceable at any time.
Refer to Module Installation (page 8) and Ordering Information (page 82) for more details.

CAUTION

Avoid Electrostatic Discharge (ESD).

•

Minimize handling of the plug-in modules to reduce the possibility of damage due to ESD.

•

Handle modules by the edges.

Never touch any exposed circuitry or contacts.

•

Wear an anti-static wristband or stand on an anti-static mat, or keep one hand touching a

properly grounded pipe or other piece of properly grounded metal when handling modules.

Relay Modules

Mfr. Part No. Code Description

3-9950.393-1 159 310 268 Relay Module - 4 Mechanical Relays

3-9950.393-2 159 310 269 Relay Module - 2 Mechanical Relays, 2 Solid State Relays

3-9950.393-3 159 310 270 Relay Module - 2 Mechanical Relays , 4 Binary Inputs

The 9950 has a slot for an optional Relay Module for any of the modules listed above.

• Dry-contact relays are electromechanical switches with a moving contact armature. They are
suitable for many general-purpose applications, AC or DC, including AC loads up to 250 V.

• Solid-state relays are electronic switches with no moving parts. They may be used with AC
or DC loads, but have lower current handling capability and voltage ratings than Dry-contact
relays. Solid-state relays will outlast Dry-contact relays in pulsing applications. 30 VDC/ VAC
maximum.

• The four Binary Inputs can detect if an external sensor or switch is open or closed. The switch
state can be used to control the relays in the module
relay activation and are not considered an input measurement.

. The four binary inputs only control

3-9950.393-3

For wiring information, refer to the Relay Wiring section, page 8.

The 3-9950.393-3 module can be set to supply power to the external switch/
sensor. For switches/sensors that require power set the Int/Ext switch to the Int
positions. If the external Switches/Sensors are powered set the Int/Ext switch to
Ext. Important for externally powered switches/sensors ensure the output signal is
within the allowable range for the 3-9950.393-3.

Int / Ext

Switch

EXT

INT

NOTE:

• The four red Indicator LEDs on the front panel of the 9950 show the status of relays
1, 2, 3, & 4. The LEDs will activate with or without a relay module installed.

• Hysteresis and time delay are adjustable for each relay.

CAUTION

CAUTION

Switching active loads (usually inductive) can cause contact arcing suffi cient
to damage the relays.

The RC Filter Kit or “snubber” (part number 3-8050.396) is available as an
accessory to reduce or eliminate these damaging effects. Recommended for
inductive loads greater than 50 VAC (remote relays, solenoids, pumps, etc.)

Keep relay wiring
separate from sensor
and signal wiring to
prevent interference
and damage to the
9950 Transmitter.

GF 9950-10 Six Channel Transmitter

15

Conductivity, Loop and Modbus Modules

Mfr. Part No. Code Description
3-9950.394-1 159 001 894 Single Channel Direct Conductivity Resistivity Module
3-9950.394-2 159 001 847 Dual Channel Conductivity/Resistivty Module
3-9950.395-M 159 001 905 Modbus Module
3-9950.398-2 159 001 848 Dual Channel 4 to 20 mA Current Loop Output Module

Direct Conductivity Resistivity Module

Compatible with all GF Conductivity Electrodes. Maximum Conductivity cable length is 30
m (100 ft). Up to two modules can be installed in a 9950 Transmitter.For longer distances
use the 3-2850 Conductivity Sensor Electronics.

Dual Channel 4 to 20 mA Module

Two additional 4 to 20 mA passive current loop outputs in a single module, allows up to
six current loop modules in the 9950 Transmitter.

Modbus Module

The Modbus Module connects the 9950 to serial RS485 Modbus automation networks.

Signal Type: Frequency

GF fl ow sensors 515/8510, 525, 2000, 2100, 2507, 2536/8512 and 2540 provide a
frequency output. (Flow sensors 2537, 2551 and 2552 can be confi gured with either
Digital (S

The maximum allowable cable length for sensors with frequency output is dependent upon
the output signal strength of the sensors themselves, and the degree to which the signals
are susceptible to EMI or "noise." This is largely a function of whether the sensors are
self-powered (515/8510 and 525), or powered by an external source (-1).

3

L) or Frequency outputs).

• The input terminals on the 9950 carry frequency data signals from the sensor.

• The 9950 has a selection for 515/525 under the input menu. Select "Yes" for optimum
signal performance.

• Do not route sensor or output cables in conduit containing AC power wiring.
Electrical noise may interfere with sensor signal.

• Routing cable in grounded metal conduit will help prevent electrical noise and
mechanical damage.

• Seal cable entry points to prevent moisture damage.

• Only one wire should be inserted into a terminal. Splice double wires outside the
terminal.

• In case of noise interference, ground the sensor SHIELD wire to a local earth ground
at a point near the sensor.

• Consult the sensor manual for additional wiring information.

Flow sensor
models with

Frequency

Output

515/8510 X

525 X

2000 X

2100 X

2507 X

2536/8512 X

2537 X

2540 X

2551 X

2552 X

Maximum

Cable Length

60 m

(200 ft)

305 m

(1000 ft)

Signal Type: Digital (S3L)

• The input terminals on the 9950 carry Digital (S3L) serial data from the sensor.

• Do not route sensor or output cables in conduit containing AC power wiring.
Electrical noise may interfere with sensor signal.

• Routing cable in grounded metal conduit will help prevent electrical noise and
mechanical damage.

• Seal cable entry points to prevent moisture damage.

• Only one wire should be inserted into a terminal. Splice double wires outside the
terminal.

• The TOTAL cable length from I/O devices to the transmitter must not exceed
305 m (1000 ft).

• In case of noise interference, ground the sensor SHIELD wire to a local earth ground at
a point near the sensor.

• Consult the sensor manual for additional wiring information.

• The maximum cable length of the Digital (S
of sensors connected and the size of the conductors in the cable. For best results,
determine the maximum cable length for the system before routing cables.

16

GF 9950-10 Six Channel Transmitter

3

L) bus varies depending on the types

In case of noise
interference, connect
the cable shield to earth
ground.

Maximum total cable length
of the Digital (S3L) Bus:

The quality of the cable used
in the bus determines the
maximum length.
The maximum cable length
may not exceed
305 m (1000 ft),
regardless of current
requirements.

Signal Type: 4 to 20 mA

When connecting a non-GF sensor to the 9950, the sensor’s 4 to 20 mA signal must be
converted to Digital (S
and converts it into Digital (S

1. Wire the 8058 between the 4 to 20 mA loop source and the 9950 Digital (S

3

L). The 8058 i-Go Signal Converter accepts any 4 to 20 mA signal

3

L).

3

L) input

terminals.

2. In the 9950 INPUT menu, sensor TYPE screen, select the '4 to 20 INPUT' sensor

(Refer to System Setup Menu, page 11).

9950 S3L Inputs

8058-1

8058-1

4-to-20 mA

Input

+GF+

4-20 mA input S3L Output

Signet 8058 i-Go™

4-20 mA to S

3

L Converter

Black

No connection

Red

White

Shield

3

Output

L
S

X

PWR+

PWR–

Loop1+

Loop1–

Loop2+

Loop2–

FREQ

DATA

GND

CH2 CH1

FREQ

DATA

GND

DC POWER

+V

+V

+V

FREQ

DATA

GND

8058-2

+GF

+

3

2
6
5

L
o
P
W

L
o
PWR

S
DATA

S
i
gn

e

t 805

N/C
7 8

1

4

o
p1

R

o
p2

3

L

8

9

4-20 mA

L Converter

3

3

S L

4-20mA to S

8058 i-Go™

+GF+

5VDC MAX

3

Loop2+ 4

Loop2 - 5

Input

N/C 6

Output

Loop1 + 1

Loop1 - 2

N/C 3

3-8058.610D

3

9 GND

8 S L

7 +5VDC

8058-2
close-up

7 8 9

N/C

3

S L

DATA

No connection

Black

Red

White

X

9950 S3L Inputs

DC POWER

PWR+

PWR–

Loop1+

Loop1–

Loop2+

Loop2–

+V

FREQ

DATA

GND

+V

CH2 CH1

FREQ

DATA

GND

+V

FREQ

DATA

GND

Relay Functions

Fail-Safe Behavior

No matter the setting, the Open Collector output turns off if the 9950 looses power. This must be taken into account when
evaluating system failure consequences. If the system layout requires a "closed" or "on" condition for the output in case of power
loss, a mechanical dry-contact relay (NC contacts) must be used instead of the Open Collector (R1) output.

Set your relay functions to your own application requirements.

Once a setting is saved it becomes immediately active.

1. Press and hold ENTER for 3 seconds

2. Go to the Relay Menu by pressing    then ENTER

3. Press the  to select desired source. You will be asked to enter a code or

password. Select source and press ENTER to confi rm

4. Press  to enter the relay MODE selection screen

5. Press  and then  to select R1 MODE LOW. Press ENTER to confirm

6. Press  to R1 SET LOW. Press  to enter GPM value of 5.5

7. Use the

 and  to change Set Point. Press ENTER to save

8. Scroll  to the R1 HYSTERESIS menu

9. Press  to edit

10. Set the hysteresis for this relay. Set the value to 2.5 gpm

11. Press ENTER

12. Scroll down  to the R1 ON DELAY menu

13. Press  to edit

14. Set the turn-on delay in seconds for the relay: 15.0

15. Press ENTER Then

16. Exit to View Mode

Example: Set a relay R1 to
turn on at a low setpoint of

5.5 gpm with a time delay of
15 seconds and turn off at

8.0 gpm.

Remember,

SET LOW + hysteresis = OFF

Relay 1 Source = CH1 Primary
Relay 1 Mode = Low
R1 Set Low = 5.5
R1 Hysteresis = 2.50
R1 on delay = 15.0 sec

 Relay function can be tested in the RELAY menu

GF 9950-10 Six Channel Transmitter

17

Hysteresis

Time

Low Setpoint

Process

Low Setpoint + Hysteresis

Hysteresis

Time

High Setpoint

Process

High Setpoint - Hysteresis

Relay energized

Relay de-energized

Relay Modes

Time

High Limit

Hysteresis

Low Limit

Process

Window

10

5

Relay Output Rate:

0 to 100 Pulses/min.

Pulse rate

0 pulses

100 pulses

7.5

Time

High Limit

Hysteresis

Low Limit

Process

Window

Hysteresis

The 9950 relays are selectable and confi gurable and can be
used as switches that respond when the process value moves
above or below a user-defi ned setpoint or it can be used to
generate a pulse at a rate proportional to the process value.
They can be used for Low Alarm, High Alarm or Proportional
Pulse triggering related to the process value. All relay
functions are set up in the RELAY menus.

Low Setpoint:

Relay is on when the measured value is less than or equal
to the setpoint. Relay turns off when the measured value is
equal to or greater than the Low Setpoint + Hysteresis.

High Setpoint:

Relay is on when the measured value is greater than or equal to
the setpoint. The relay turns off when the measured value is less
than or equal to the High Setpoint - Hysteresis.

Proportional Pulse Operation:

The transmitter can output a pulse at the rate defi ned by the settings
in the CAL menu and the sensor input. The maximum pulse output
is 300 pulses per minute.

Example usage would be to control

solenoid-operated dosing pumps.

For example: As the process value rises above the setpoint, the
output will start pulsing in relation to the process value,
the maximum pulse endpoint and the programmed
pulses/minute. The pulse rate will change as the process value
changes and approaches the programmed endpoint. This
functionality can be used to precisely control the process.

The starting point, endpoint and maximum pulse rate are select ­able in the RELAY menus.

NOTE: Relay LEDs will fl ash in PULSE mode.

100 pulses

Window In/Out:

Relay is on when the value is equal to or higher or lower than
the high or low setpoint.
WINDow IN = relay on if measurement is inside the window

of two setpoints.

WINDow OUT = relay on if measurement is outside the

window of two setpoints.

Window IN example

Starting point Endpoint

In the example:

• The output will be 0 pulses/min. when value is less than 5.

• The output will be 50 pulses/min. when value is 7.5.

• The output will be 100 pulses/min. when value is 10 or greater.

18

Window OUT example

GF 9950-10 Six Channel Transmitter

y

Relay Modes

• Pulse Width Modulation

PWM automatically varies the ratio of ON time to OFF time
proportional to minimum and maximum range settings.

The relay period is the sum of the time a relay is ON and the
time it is OFF.

Relay pulse width is the time the relay is ON.

The 9950 must be programmed with the relay period, and with
the low and high setpoints.

NOTE: The PWM mode is not used for Pressure applications.
Relay LEDs will fl ash in PWM mode.

PWM
Maximum

100%

80%

60%

40%

Relay Pulse Width

20%

(as a % of Relay period)

0%

alwa

Relay is

s OFF

PWM
Minimum

Process value

Range

Relay is

always ON

NOTE: The pulse width will be 100% of the relay period
(relay always ON) when the process value is greater than the
maximum range.

• Totalizer Volume

Relay activates and latches when a specifi ed volume of fl uid is
registered on the resettable totalizer. For Flow inputs only.

Total Volume mode counts the TOTALIZER Units until the
setpoint volume is reached, then turns on the relay until the
resettable totalizer is reset.

If the Resettable Totalizer reading is greater than the setpoint,
the relay will be turned on immediately. The relay will be off
when the totalizer is below the set point or the resettable
totalizer is reset to zero.

This mode is useful to trigger a reminder when a process is
due, as for a backwash cycle or fi lter change.

Relay Mode - ERROR

Example:

• The pulse width will be 0% of the relay period
(relay always OFF) when the process value is
less than the minimum range.

• The pulse width will be 100% of the relay period
(relay always ON) when the process value is
greater than the maximum range.

• The pulse width will be 60% of the relay period when
the process value is at 60% of the span between the
minimum and maximum range.

• Volumetric Pulse

The relay will activate for the set pulse width once the specifi c
volume of fl uid is registered. Flow Inputs only.

NOTE: Relay LEDs will turn on when the relay is active

CH1

00.0 0

CH2

00.0 0

_ _ _ _ ._

NO SENSOR

9999.9

7 .0

6 2 .8

mV

GPMS

00.00

pH

15.00

°F

Error Mode

When the relay "Error" mode is assigned to a sensor,
any of the following sensor-related errors will activate the
relay and turn the screen "RED" with the appropriate error
message.

• Wrong sensor connected

• No response from a sensor, e.g. a missing sensor or a
broken wire

• Sensor returning a measurement error (for pH and ORP,
a missing probe will cause this)

• An out-of-range measurement value from the sensor

• An expired Dissolved Oxygen cap

• A missing Dissolved Oxygen cap

• A pH electrode whose glass impedance is less than or
equal to the user-specifi ed broken glass limit

• A conductivity module that is compensating the wire
length and is not returning a measurement

• A missing module

• The wrong module inserted into the slot

GF 9950-10 Six Channel Transmitter

19

R embrane

R embrane

R embrane

Feed

Concentrate

Permeate

R embrane

R embrane

R embrane

Feed

Concentrate

Permeate

Feed

Concentrate

R embrane

R embrane

R embrane

Permeate

Derived Functions

RO Membrane

RO Membrane

RO Membrane

Feed

Concentrate

Permeate

When two of the same type of measurement (either primary or secondary) are present, the 9950 can calculate several derived functions
from like pairs of measurements. Set-up menu located in the Options menu, refer to page 59.
Up to four derived Functions can be defi ned and used as the source for a loop output or relay control.
Derived calculations can be viewed in the View Mode.

• Flow, Temperature, Pressure, Conductivity and Level measurements must have matching units.
(Flow channels must also have same time base).

• Conductivity channels will automatically scale to S/cm before the function calculation is made.

• Three types of derived measurements can be applied to any set of sensors, regardless of type.

• Ratio: Measurement 1 ÷ Measurement 2 or Measurement 2 ÷ Measurement 1

• Delta (Difference): Measurement 1 - Measurement 2 or Measurement 2 - Measurement 1

• Sum: Measurement 1 + Measurement 2

• Custom labels can be assigned to Derived Functions for ease of identifi cation.

% Passage and % Reject

• % Passage and % Reject are derived functions based on
conductivity measurements only, specifi cally for use in reverse
osmosis systems.

• % Passage is the amount of contaminates remaining in the
product water compared to the level of contaminates in the feed
water. For example, if the feed water measures 375 S and the
product water measures 18.75 S, the % Passage is

(18.75/375) x 100= 5%

• % Reject is the amount of contaminates rejected to the
concentrate water compared to the amount of contaminates
in the feed water. For example, if the feed water measures
375 uS and the product water measures 18.75 uS the % reject is
[1-(18.75/375)] x 100 = 95%

• Decreasing Reject values and increasing Passage values
usually indicate a problem with the RO membrane.

% Passage: (Permeate ÷ Feed) x 100

% Reject: [1 - (Permeate ÷ Feed)] x 100

% Recovery

• % Recovery is a derived function based on fl ow rate, in a
reverse osmosis system.

• To measure % Recovery, the 9950 must have two fl ow
sensors connected. They may be located in the Feed line,
the Concentrate line or the Permeate line.

• The 9950 provides 3 different methods for calculating
Recovery to accommodate any confi guration.

• Both fl ow sensors must use the same time base and units
of measure.

% Recovery A: (Permeate ÷ Feed) x 100
In the Setup menu, select the option that states % Recovery A,

FEED: PERMEATE

20

GF 9950-10 Six Channel Transmitter

% Recovery B: Permeate ÷ (Permeate + Concentrate) x 100
In the Setup menu, select the option that states % Recovery B,

PERMEATE: CONC

% Recovery C: [(Feed - Concentrate) ÷ Feed] x 100
In the Setup menu, select the option that states % Recovery C,
FEED: CONC

Sensor-Specifi c Menus

Flow

The following pages list the sensor-specifi c settings for each sensor type. The user can confi gure the
unit to run each channel on different parameters if needed.

VIEW Mode Menu

CH1

50.30

40560.0

0.00

CH2

987.9

65.5

0.00

Displays the fl ow rate and the resettable
or permanent totalizer below. This is the
normal display and does not time out.

CH1

50.30

FLOW

0.00

CH2

987.9

FLOW

0.00

CH 1 TOTALIZER

P 40560.0

R 40560.0 ->

LITERS

GPM

100.00

GPM

100.00

GPM

R

100.00

GPM

R

100.00

View Measurement 2 displays the primary value and the channel name. This screen does not time out.

Displays the Permanent Totalizer and Resettable Totalizer for each FLOW channel
(note the "P" indicating Permanent and "R" for Resettable) Pressing  will prompt you to reset.
Pressing  again will verify YES or NO. Pressing ENTER will reset the totalizer.

FLOW Setup Checklist

1. Make sure FLOW sensor type is selected
(Refer to System Setup Menu, page 9).

2. Set the Units of Measurement.

3. Set Sensor Type (Freq or S3L) and if 515 or 525, select Yes.

4. If LOOP is used, set the minimum and maximum 4 to 20 mA setpoints.

5. Set K-Factor (pulses per Unit Volume) from Flow Sensor manual.

6. Set Totalizer factor.

7. Set Last Cal Date and initials.

8. If applicable, set up relay functions for your application.

INPUT Menu

SETUP

CHANNEL 1

ENTER

CH1 FACTORY

TYPE

FACTORY

CH1 FLOW

SOURCE

NONE

CHANNEL 1

NAME

FLOW

CH 1 FLOW

515/2536

YES

CH 1 FLOW

GPM

FLOW UNITS

CH 1 FLOW

CUST/S

CUSTOM UNITS

Press ENTER to start assigning sensors to each channel.
Use the  and  arrow to go to any of the six channels directly.
NOTE: Display only available when the 9950 is in FACTORY mode.

Press the  arrow, use the  and  arrow to select which TYPE of sensor will be assigned to the
channel(s) (1-6).
Press ENTER to save sensor type.

Press the  arrow, using the  or  to select the INPUT source to the channel.
To change sensor selection after its been assigned, change the source to NONE, then the sensors can be
reassigned.

English, French, German, and Spanish Only. If desired, a custom name can be entered.
Enter 17-character string.
Default = FLOW

If the fl ow sensor is self powered such as a 515/525, select YES.
Select NO if an open connector such as 2536/2540/2100 fl ow sensor is being used.
Default = YES

Select the FLOW RATE UNIT from the pull down menu.
Custom units can be created and used.
The last character sets the timebase: S (seconds) M (minutes) H (hours) D (days).
Default = GPM

NOTE: Screen will only appear if CUSTOM is selected from previous menu.
English, French, German, and Spanish Only. Display visible only when FLOW UNITS CUST/S, CUST/M,
CUST/H, CUST/D is selected. Allows user to set custom fl ow rate units for primary measurement. CUST/S,
M, H, D label can be adjusted to refl ect to user's custom units.

GF 9950-10 Six Channel Transmitter

21

Flow

INPUT Menu

TOTALIZER

TOTAL UNITS

GALLONS

(LABEL only) Identifi es the totalizer units, has no effect on any calculations.
Default = LITERS

TOTALIZER

DISPLAY

R TOTALIZER

CH1 FLOW

100.0

SENSITIVITY

CH1 FLOW

AVERAGE

OFF

CAL Menu

CH 1 FLOW

OFF

HOLD OUTPUTS

CH 1 FLOW

KF

60.00

CH 1 FLOW

TF

1.00

CH 1 FLOW

Set the Totalizer displayed in view mode. Select R TOTALIZER for resettable or select PERM TOTALIZER
for permanent.
Default = R TOTALIZER

The Sensitivity setting determines how the 9950 responds to sudden changes in the fl ow rate for
a frequency sensor. The value is expressed in units of measurement. If the setting is exceeded, it
"overrides" the Averaging function briefl y to allow for the actual change in fl ow rate to be displayed.
Averaging resumes shortly after. The result is a smooth fl ow display and a quick response to large shifts in
the fl ow rate. To disable the sensitivity function set it to 99999.

Dampens display, output and relay response rates.
Select Low, Med, High, OFF.
Default = OFF

ON prevents relays from activating while making adjustments and relays in PULSE mode will suspend
pulsing. Output is held until the user exits the CAL menu or turns it off.
Press the  arrow, using the  or  to select OFF/ON. Press ENTER to save.
Default = OFF

Set K-Factor (pulses per unit volume) from Flow Sensor manual.
Min: 0.0001, max. 9999999. Cannot be zero. Default = 60.0000

Sets the volume of each count of the Totalizer as a multiple of the volume unit of the K-Factor.
Min: 0.0001, max. 9999999. Cannot be zero. Default = 1.0000

22

RATE CAL ->

MULTIPLE

CH 1 FLOW

VOLUME CAL ->

OFF

CH1 FLOW

LAST CAL ->

12-31-2015 XX

GF 9950-10 Six Channel Transmitter

Select to calibrate using rate method. (Refer to page 76)

Select to calibrate using Volume method. (Refer to page 76)

Enter date of calibration (MM-DD-YYYY) and initials of calibrator (XX)

pH

VIEW Mode Menu

CH1

7.0

77.0

-1.00

CH2

4.0

99.0

-1.00

Displays the pH value and the
temperature below. This is the normal
display and does not time out.

pH

°F

15.00

pH

°F

15.00

pH Setup Checklist

1. Make sure pH sensor type is selected.
(Refer to System Setup Menu, page 11)

2. Set the Temperature Units (°C or °F).

3. If LOOP is used, set the minimum and maximum 4 to 20 mA setpoints.

4. Perform calibration (EasyCal, Standard or Standard and Slope).

5. Set Last Cal Date and initials.

6. Select source for Relay output (pH or Temp).

7. If applicable, set up relay functions for your application.

CH1

pH

-1.00

CH2

pH

-1.00

GLASS IMPEDANCE

CH1 1049 MOhm ->

7.0

7.0

RAW

CH 1 264.10 mV

CH2 182.10 mV

REF IMPEDANCE

CH1 27 MOhm ->

Sensor Data

CH1->

pH

15.00

pH

15.00

View Measurement 2 displays the primary value and the channel name. This screen does not time out.

Displays the RAW millivolt input from the electrode. Use this display to determine the relative
condition of your electrode during periodic calibration.

[Glass Impedance] 2751 only, pH only, last measured glass Impedance, press  key to manually
update reading.

2751-X, 274X electrodes Only, last reference impedance measurement, press  key to update
reading.

2571-X only. Using the  key, you will see the following screens: [Serial Number] Electrode Serial
Number, [Model Number] Electrode Model Number, [pH Calibration Slope] Calibration Slope Value,
[pH Offset] Calibration Offset, [Temperature Offset] pH only, Temperature Offset Value, [Factory
Impedance] pH only, Factory pH glass Impedance, [Usage Time] Electrode Runtime in Hours,
[Minimum pH] Minimum Measured Value, [Maximum pH] Maximum Measured Value, [Minimum
Temperature] pH only, Minimum Measured Temperature, [Maximum Temperature] pH only, <Maximum
Measured Temperature.

EASYCAL

CH1 pH ->

CH2 pH ->

pH EASYCAL looks for buffers of 4, 7, or 10 pH buffers. (Refer to page 71)

GF 9950-10 Six Channel Transmitter

23

pH

INPUT Menu

SETUP

CHANNEL 1

ENTER

Press ENTER to start assigning sensors to each channel.
Use the  and  arrow to go to any of the six channels directly.

NOTE: Display only available when the 9950 is in FACTORY mode.

CH1 FACTORY

TYPE

FACTORY

CH1 pH

SOURCE

NONE

CHANNEL 2

NAME

pH

CH 2 pH

°F

AT INSTRUMENT

CH 2 pH

AVERAGE

CUST CEOFFL CONST

CH 1 pH

60

IMP UPDATE TIME

Press the  arrow, and use the  and  arrow to select which TYPE of the sensor will be assigned
to the channel(s) (1-6).
Choose pH, and press ENTER to save sensor type.

Press the  arrow, using the  or  to select the input source to the channel.
Sources list will only contain pH sensors electronics (2751-X)
To change sensor selection after its been assigned, change the source to NONE, then the sensors
can be reassigned.

English, French, German, and Spanish Only. If desired, a custom name can be entered.
Enter 17-character string.
Default = pH

Select °F or °C.
Default = Determined by the SELECT UNITS screen menu. Metric = °C, U.S. Customary = °F.

Dampens display, output and relay response rates.
Select Low, Med, High, OFF. Default = OFF

NOTE: GF Strongly recommends leaving Averaging OFF for pH, ORP, and Pressure measurements.

2751, pH Only. Enter the time between automatic impedance measurement updates in 15 minute
increments, 0 = Off - manual updates only.
Default = 60

MOhm

03

BROKEN GLASS

CH 1 pH

3X

HI IMP WARN

2751, pH Only. Enter the impedance value for Broken pH Glass, 0 = Off, Default = 3

2751, pH only. Enter the high Impedance warning set point as NONE, 2, 3, 4, or 5 times the factory
Impedance of the electrode.
Default = NONE

24

GF 9950-10 Six Channel Transmitter

pH

CAL Menu

CH 2 pH

OFF

HOLD OUTPUTS

CH 2 pH

CAL

AT INSTRUMENT

CH 2 pH

EASYCAL ->

CH 2 pH

SET

TEMPERATURE ->

CH 2 pH

°SETF

pH STANDARD ->

CH2 pH

SET

pH SLOPE

CH2 pH

Setting to ON prevents relays from activating while making adjustments or calibrating.
Relays in PULSE mode will suspend pulsing. 4 to 20 mA outputs are held until the user exits the CAL
menu or turns it OFF. Press the  arrow, using the  or  to select OFF/ON. Press ENTER to save.
Default = OFF

Select AT SENSOR to perform calibration using the GF 2751-2 Sensor Electronics.
Select AT INSTRUMENT to perform calibrations at the 9950 using the 3-2751-1, 3-2751-3, or 3-2751-4
electronics. (Refer to pH Calibration procedures, page 71).
Default = AT INSTRUMENT

(CAL AT INSTRUMENT only) Press  to start the EasyCal process.
The password prompt is the same as the other parameters.
(Refer to pH EasyCal procedure, page 71)

(CAL AT INSTRUMENT only) Applies a linear offset to the temperature measurement.
"SAVING" will appear if offset is acceptable, "ERR TOO LARGE TO CALIBRATE" if offset is outside of
range.

(CAL AT INSTRUMENT only) Applies an offset to the pH measurement. The slope value and the
standard value must be at least 2 pH units apart. The ideal values are the minimum and maximum
values of your process. (Refer to pH Calibration procedures, page 71).
Shows error message if offset is too high.

(CAL AT INSTRUMENT only) Applies a slope to the pH measurement. The slope value and the
standard value must be at least 2 pH units apart. The ideal values are the minimum and maximum
values of your process. (Refer to pH Calibration procedures, page 71).
Shows error message if slope is too low or high.

SET

RESET pH CAL ->

CH2 pH

100.0

RESET TEMPCAL ->

CH 2 pH

100LAST CAL.00

12 - 31 - 2015 XX

(CAL AT INSTRUMENT only) Press  to reset pH calibration to factory default.

(CAL AT INSTRUMENT only) Press  to reset temperature calibration to factory default.

Enter date of calibration (MM-DD-YYYY) and initials of calibrator (XX)

GF 9950-10 Six Channel Transmitter

25

ORP

VIEW Mode Menu

CH1

CUSTOM LABEL

-999.0

CH2

CUSTOM LABEL

-999.0

Displays the ORP millivolt value.
This is the normal display and does
not time out.

84.0

1000.0

74.0

1000.0

mV

mV

ORP Setup Checklist

1. Make sure ORP sensor type is selected
(Refer to System Setup Menu, page 11).

2. If LOOP is used, set the minimum and maximum 4 to 20 mA setpoints.

3. Set Averaging.

4. Perform calibration or set Standard (and Slope if desired).

5. Set Last Cal Date and initials.

6. If applicable, set up relay functions for your application.

CH1

ORP

-999.0

CH2

ORP

-999.0

76.0

50.0

RAW

CH 1 264.10 mV

CH2 182.10 mV

REF IMPEDANCE

CH1 27 MOhm ->

Sensor Data

CH1->

EASYCAL

CH1 ORP ->

CH2 ORP ->

mV

1000.0

mV

1000.0

View Measurement 2 displays the primary value along with the channel name.
The screen does not time out.

Displays the RAW millivolt input from the electrode.
Use this display to determine the relative condition of your electrode during periodic calibration.

2751, 276x electrodes only, last reference impedance measurement, press  to update reading.

2571 only. Using the  key, you will see the following screens: [Serial Number] Electrode Serial
Number, [Model Number] Electrode Model Number, [ORP Calibration Slope] Calibration Slope Value,
[ORP Calibration Offset] Calibration Offset, [Usage Time] Electrode Runtime in Hours, [Minimum
ORP] Minimum Measured Value, [Maximum ORP] Maximum Measured Value.

ORP EASYCAL looks for buffer of 87, 264, or 476 mV.
Press  to begin EASYCAL.
(Refer to page 73)

26

GF 9950-10 Six Channel Transmitter

ORP

INPUT Menu

SETUP

CHANNEL 2

ENTER

CH2 FACTORY

TYPE

FACTORY

CH2 ORP

SOURCE

NONE

CHANNEL 2

NAME

ORP

CH 2 ORP

AVERAGE

CUST CEOFFL CONST

CAL Menu

CH 2 ORP

OFF

HOLD OUTPUTS

Press ENTER to start assigning sensors to each channel.
Use the  and  arrow to go to any of the six channels directly.
NOTE: Display only available when the 9950 is in FACTORY mode.

Press the  arrow, use the  and  arrow to select which TYPE of sensor will be assigned to the
channel(s) (1-6).
Choose ORP, press ENTER to save sensor type.

Press the  arrow, using the  or  to select the input source to the channel.
Sources list will only contain ORP sensors or modules.
To change sensor selection after it's been assigned, change the source to NONE, then the sensors can
be reassigned.

English, French, German, and Spanish Only. If desired, a custom name can be entered.
Enter 17-character string.
Default = ORP

Dampens display, output and relay response rates.
Select Low, Med, High, OFF.
Default = OFF
NOTE: GF Strongly recommends leaving Averaging OFF for pH, ORP, and Pressure measurements.

Setting to ON prevents relays from activating while making adjustments or calibrating.
Relays in PULSE mode will suspend pulsing. 4 to 20 mA outputs are held until the user exits the CAL
menu or turns it OFF. Press the  arrow, using the  or  to select OFF/ON. Press ENTER to save.
Default = OFF

CH 2 ORP

CAL

AT INSTRUMENT

CH 2 ORP

EASYCAL ->

CUST CELL CONST

CH 2 ORP

SET

ORP STANDARD ->

CH 2 ORP

°SETF

ORP SLOPE ->

CH2 ORP

AVERAGE

RESET ORP CAL ->

CH2 ORP

Select AT SENSOR to perform calibration using the GF 2751-2 sensor electronics.
Select AT INSTRUMENT to perform calibrations at the 9950 using the 3-2751-1, 3-2751-3, or 3-2751-4
electronics. (Refer to ORP Calibration procedures, page 73).
Default = AT INSTRUMENT

(CAL AT INSTRUMENT only) Press  to start the EasyCal process.
You will be prompted to enter your password.
(Refer to ORP EasyCal procedure, page 73)

(CAL AT INSTRUMENT only) Applies a linear offset to the ORP measurement. For two-point calibrations,
assign the min or max value of your process to ORP STANDARD.
(Refer to ORP Calibration procedures, page 73)

(CAL AT INSTRUMENT only) Applies a slope to the ORP measurement. The ORP SLOPE is used for two­point calibration along with the ORP STANDARD. If you applied the min value of your process to the ORP
STANDARD, then apply the max value to the ORP SLOPE. Also, apply the min value to the ORP SLOPE.
The slope value and the standard value must be at least 80 mV apart. (Refer to ORP Calibration, page 73)

(CAL AT INSTRUMENT only) Resets calibration to factory settings. After pressing , select YES/NO.

LAST CAL

12-31-2015 XX

Enter date of calibration (MM-DD-YYYY) and initials of calibrator (XX)

GF 9950-10 Six Channel Transmitter

27

Conductivity / Resistivity

VIEW Mode Menu

CH1

1205.0 0

77.0

0.0000

CH2

987.9

65.5

0.0000

Displays the conductivity value and the
temperature below. This is the normal
display and does not time out.

uS

°F

100.00

uS

°F

100.00

Cond/Res Setup Checklist

1. Make sure COND/RES sensor type is selected.
(Refer to System Setup Menu, page 11)

2. Set Cell Constant.

3. Set the Temperature Units (°C or °F).

4. Set Conductivity units.

5. If LOOP is used, set the minimum and maximum 4 to 20 mA setpoints.

6. Set Temperature Compensation.

7. Set Last Cal Date and initials.

8. Select source for Relay output (COND or TEMP).

9. If applicable, setup relay functions for your application.

1205.00

CH1

COND/RES

0.0000

9999.9

CH2

COND/RES

0.0000

INPUT Menu

SETUP

CHANNEL 1

ENTER

CH1 FACTORY

TYPE

FACTORY

CH1 COND/RES

SOURCE

NONE

CHANNEL 2

NAME

COND/RES

uS

100.00

uS

100.00

View Measurement 2 displays the primary value and the channel name. The screen does not time out.

Press ENTER to start assigning sensors to each channel.
Use the  and  arrow to go to any of the six channels directly.
NOTE: Display only available when the 9950 is in FACTORY mode.

Press the  arrow, use the  and  arrow to select which TYPE of sensor will be assigned to the
channel(s) (1-6).
Choose COND/RES, press ENTER to save sensor type.

Press the  arrow, using the  or  to select the input source to the channel.
Sources list will only contain Conductivity/Resistivity sensors or modules.
To change sensor selection after it's been assigned, change the source to NONE, then the sensors can
be reassigned.

English, French, German, and Spanish Only. If desired, a custom name can be entered.
Enter 17-character string.
Default = COND/RES

CH 2 COND/RES

CELL CONSTANT

CH 2 COND/RES

SENSOR 1.00000

CUST CELL CONST

CH 2 COND/RES

28

SENSOR 1.0

uS

COND UNITS

GF 9950-10 Six Channel Transmitter

Press the  arrow, using the  or  to select the cell constant - 20.0, 10.0, 1.0, 0.1, 0.01, or CUSTOM.
Default = 1.0 (See NOTE below)

Display visible only when CUST is selected in the CELL CONSTANT selection of the menu.
Press the  arrow, using the  or  to enter the precise cell constant from the certifi cate provided with
your sensor or from the information label on the sensor if CUST (custom) cell constant is selected.

Press the  arrow, using the  or  to select the measurement units S, mS, PPM, PPB, KOhm, or
MOhm.
Default = S
NOTE: In USP Relay Mode, TEMP COMP must be set to NONE and Unit Of Measure must be set to S.

Conductivity / Resistivity

INPUT Menu

CH 2 COND/RES

0.50

TDS FACTOR

CH2 COND/RES

°F

TEMP UNITS

CH2 COND/RES

AVERAGE

OFF

CH2 COND/RES

TEMP COMP

LINEAR

CH 2 COND/RES

2.0

ADJ TEMP COMP

CAL Menu

CH 2 COND/RES

OFF

HOLD OUTPUTS

Display only visible when PPM or PPB units are selected. Press the  arrow, using the  or  to select
the TDS factor, a TDS factor for converting the conductivity units to TDS is required.
Default = 0.50

Select °F or °C.
Default = Determined by the SELECT UNITS screen menu. Metric = °C, U.S. Customary = °F.

Dampens display, output and relay response rates.
Select Low, Med, High, OFF.
Default = OFF

Press the  arrow, using the  or  to select the temperature compensation (NONE, LINEAR, PURE
H2O). Default = LINEAR
NOTE: In USP Relay Mode in Conductivity, Relay Source must be set to COND, TEMP COMP must be
set to NONE and Unit Of Measure must be set to S.

Adjusted the % of temperature compensation.
Maximum slope setting is 9.99 % per ºC. Default = 2.0
(If Temperature Compensation setting is NONE, this item will not be displayed)

ON prevents relays from activating while making adjustments, and relays in PULSE mode will suspend
pulsing. Output is held until the user exits the CAL menu or turns it OFF.
Press the  arrow, using the  or  to select OFF/ON. Press ENTER to save.
Default = OFF

CH 2 COND/RES

AUTO CAL ->

CS

CH 2 COND/RES

MANUAL CAL ->

CL CONST

CH 2 COND/RES

SET

TEMPERATURE

CH 2 COND/RES

F

RESET CONDCAL ->

CH2 COND/RES

AVERAGE

RESET TEMPCAL ->

CH2 COND/RES

Shows real-time value and automatically selects closest standard. “PLACE SENSOR IN STANDARD”.
Unit waits until reading is stable; if bad calibration, returns “ERROR, CANNOT DETERMINE
STANDARD”. Refer to buffer values and AUTO CAL Procedure. Refer to page 75.

Shows the live CONDUCTIVITY value on bottom line; when user presses any button the live value is
frozen and the user edits that value. If bad calibration, returns “ERR TOO LARGE TO CALIBRATE”.
Refer to Manual Cal procedure, page 75

Shows the live TEMPERATURE value on bottom line; when user presses any button the live value is
frozen and the user edits that value. If bad calibration, returns “ERR TOO LARGE TO CALIBRATE”.

Resets Conductivity calibration. After pressing , select YES/NO.

Resets Temperature calibration. After pressing , select YES/NO.

LAST CAL

12-31-2015 XX

Enter date of calibration (MM-DD-YYYY) and initials of calibrator (XX)

GF 9950-10 Six Channel Transmitter

29

Pressure

VIEW Mode Menu

CH1

7.0

77.0

0.0

CH2

4.0

99.0

0.0

Displays the pressure reading. This
is the normal display and does not
time out.

PSI

°F

10.0

PSI

°F

10.0

PRESSURE Setup Checklist

1. Make sure PRESSURE sensor type is selected.
(Refer to System Setup Menu, page 11)

2. If LOOP is used, set the minimum and maximum 4 to 20 mA setpoints.

3. Set Units of Measurement (PSI, BAR, KPa).

4. Set Last Cal Date and initials.

5. If applicable, set up relay functions for your application.

CH1

PRESSURE

0.0

CH2

PRESSURE

0.0

90.0

89.0

INPUT Menu

SET UP

CHANNEL 1

ENTER

CH 1 FACTORY

TYPE

FACTORY

CH 1 PRESSURE

SOURCE

CUST CENONEL CONST

CHANNEL 2

NAME

PRESSURE

CH 2 PRESSURE

PSI

PRESS UNITS

PSI

10.0

PSI

10.0

View Measurement 2 displays the primary value and the channel name. This screen does not time out.

Press ENTER to start assigning sensors to each channel.
Use the  and  arrow to go to any of the six channels directly.
NOTE: Display only available when the 9950 is in FACTORY mode.

Press the  arrow, use the  and  arrow to select which TYPE of sensor will be assigned to the
channel(s) (1-6).
Choose PRESSURE, press ENTER to save sensor type.

Press the  arrow, using the  or  to select the input source to the channel.
Sources list will only contain PRESSURE sensors or modules.
To change sensor selection after it's been assigned, change the source to NONE, then the sensors can be
reassigned.

English, French, German, and Spanish Only. If desired, a custom name can be entered.
Enter 17-character string.
Default = PRESSURE

Press the  arrow, using the  or  to select the units of pressure measurement - PSI, BAR, or KPa.
Default = Determined by the SELECT UNITS screen menu.
Metric = Bar, U.S. Customary = PSI.

CH 2 PRESSURE

AVERAGE

CUST CEOFFL CONST

30

GF 9950-10 Six Channel Transmitter

Dampens display, output and relay response rates.
Select: Low, Med, High, OFF.
Default = OFF. GF strongly recommends leaving averaging OFF for pH and pressure measurements

Pressure

CAL Menu

CH 2 PRESSURE

OFF

HOLD OUTPUTS

CH 2 PRESSURE

SET ZERO

CH 2 PRESSURE

SET PRESSURE

CH 2 PRESSURE

RESET CAL ->

CH2 ORP

LAST CAL

12-31-2015 XX

ON prevents relays from activating while making adjustments, and relays in PULSE mode will suspend
pulsing. Output is held until the user exits the CAL menu or turns it OFF.
Press the  arrow, using the  or  to select OFF/ON. Press ENTER to save.
Default = OFF

With process pressure at zero, press the  arrow, using the  or  to set zero point for measurement.
NOTE: Application must be OFF and have zero pressure to perform this operation.

Press the  arrow, using the  or  to enter the pressure reading from a external reference
NOTE: Allows a maximum offset of 5 PSI to be entered.

Resets calibration to factory default. After pressing , select YES/NO.

Enter date of calibration (MM-DD-YYYY) and initials of calibrator (XX)

Level / Volume

VIEW Mode Menu

CH1

25.0

78.5

0.0000

CH2

20.0

99.0

0.0000

Displays the level value and the volume
below. This is the normal display and
does not time out.

CH1

LEVEL

0.0000

CH2

LEVEL

0.0000

25.0

42.0

FT

10.000

FT

10.000

FT

GAL

10.000

FT

GAL

10.000

View Measurement 3 displays the primary value and the channel name. This screen does not time out.

LEVEL/VOLUME Setup Checklist

1. Make sure LEVEL/VOLUME sensor type is selected.
(Refer to System Setup Menu, page 11)

2. Select Main Measurement (Level or Volume).

3. Set Units of Measurement for LEVEL display (FT, IN, M, CM).

4. If desired, set Units of Measurement for VOLUME display.

5. Set the minimum and maximum 4 to 20 mA setpoints.

6. Set Specifi c Gravity.

7. Set Sensor Offset.

8. If VOLUME is used, set Shape.

9. Set Last Cal Date and initials.

10. If applicable, set up relay functions for your application.

GF 9950-10 Six Channel Transmitter

31

Level / Volume

INPUT Menu

SETUP

CHANNEL 2

ENTER

CH 2 FACTORY

TYPE

FACTORY

CH 2 LEVEL

SOURCE

NONE

CHANNEL 2

NAME

LEVEL

CH 2 LEVEL

MAIN MEAS

LEVEL

CH 2 LEVEL

M

C LEVEL UNITSL

Press ENTER to start assigning sensors to each channel.
Use the  and  arrow to go to any of the six channels directly.
NOTE: Display only available when the 9950 is in FACTORY mode.

Press the  arrow, use the  and  arrow to select which TYPE of sensor will be assigned to the
channel(s) (1-6).
Choose LEVEL, press ENTER to save sensor type.

Press the  arrow, using the  or  to select the input source to the channel.
Sources list will only contain LEVEL/VOLUME sensors.
To change sensor selection after it's been assigned, change the source to NONE, then the sensors can
be reassigned.

English, French, German, and Spanish Only. If desired, a custom name can be entered.
Enter 17-character string.
Default = LEVEL

Press the  arrow, using the  or  to select between LEVEL and VOLUME.
Default = LEVEL

Press the  arrow, using the  or  to select unit of measure for LEVEL display (FT, IN, M, CM).
Default = Determined by the SELECT UNITS screen menu. Metric = M, U.S. Customary = FT.

CH 2 LEVEL

DISP LEVEL AS %

OFF

CH2 LEVEL

L

VOLUME UNITS

CH 2 LEVEL

DISP VOL AS %

OFF

CH 2 LEVEL

1.00

SPEC GRAVITYS

CH 2 LEVEL

0.00

SENSOR OFFSET

CH2 LEVEL

AVERAGE

OFF

ON = Measurement will be displayed as a percentage of full scale.
OFF = Measurement will be displayed in unit of measure selected in previous setting.
Default = OFF

3, in3

Select unit of measure for VOLUME display (GAL, L, Lb, KG, FT

, M3, cm3).

Default = Determined by the SELECT UNITS screen menu. Metric = L, U.S. Customary = GAL.

ON = Measurement will be displayed as a percentage of full scale.
OFF = Measurement will be displayed in unit of measure selected in previous setting.
Default = OFF

Enter the specifi c gravity of the fl uid at normal operating temperature.
Default = 1.0000 (water)

Enter the distance from sensor location to the Zero reference point in the vessel.
Displayed in units of measure chosen in LEVEL UNITS.
Default = 0.00

Dampens display, output and relay response rates.
Select Low, Med, High, OFF
Default = OFF

32

GF 9950-10 Six Channel Transmitter

Level / Volume

INPUT Menu

CH 2 LEVEL

VERT CYLINDER

SHAPE

M

2.00

TANK DIAMETER

FT

10.00

TANK LENGTH

FT

10.0

TANK WIDTH

CH 2 LEVEL

4

NUM CUST POINTS

CH 2 LEVEL

MANUAL

LEVEL CALC

FT

Select the shape of the vessel where the level sensor is located. VERT CYLINDER, HORIZ
CYLINDER, RECTANGLE, or CUSTOM.
(To defi ne a custom tank shape, refer to page 67, Defi ning a Custom Tank).
Default = VERT CYLINDER

If VERT CYLINDER or HORIZ CYLINDER is selected, enter the diameter of the cylinder. Displayed in
units of measure chosen in LEVEL UNITS.
Default = 2.0000

If HORIZ CYLINDER is selected, enter the diameter of the cylinder.
Set length of tank.
Default = 10.00

Display seen only when RECTANGLE shape is selected.
Set width of tank.
Default = 10.00

If Custom shape is selected, enter the number of measurement points to be used to defi ne
the vessel shape (Refer to Level and Volume Calculation in Custom Shaped Vessels, page 68).
Minimum 4 points, maximum 32 points. A larger number of points improves accuracy.

Select (AUTO, MANUAL). Manual allows you to edit both the Level and the corresponding
Volume for your custom tank. Automatic allows you to edit the Volume measurement
(while displaying an automatically calculated Level value).

0.00

POINT X LEVEL

FT

0.00

POINT X VOL

Where (X) is the number of custom points selected in "NUM CUST POINTS" used to calculate LEVEL.

Where (X) is the number of custom points selected in "NUM CUST POINTS" used to calculate
VOLUME.

GF 9950-10 Six Channel Transmitter

33

Level / Volume

CAL Menu

CH 2 LEVEL

OFF

HOLD OUTPUTS

CH 2 LEVEL

LEVEL CAL

CH 2 LEVEL

REURESET CALELL

CH 2 LEVEL

CH2 LEVEL

SET

LAST CAL

pH STANDARD ->

12-31-2015 XX

ON prevents relays from activating while making adjustments, and relays in PULSE mode will
suspend pulsing. Output is held until the user exits the CAL menu or turns it OFF.
Press the  arrow, using the  or  to select OFF/ON. Press ENTER to save.
Default = OFF

Shows SET LEVEL on middle line. When user presses any key, the live value is frozen and the user
edits that value. Returns either GOOD CAL or LEVEL OFFSET TOO LARGE.

Resets calibration to factory default. After pressing , select YES/NO.

Enter date of calibration (MM-DD-YYYY) and initials of calibrator (XX)

Temperature

VIEW Mode Menu

CH1

0.00

CH2

113.0

9999.9

89.0

GPMS

100.00

9999.9

0.00

Displays the temperature value.
This is the normal display and does
not time out.

100.00

°F

°F

TEMPERATURE Setup Checklist

1. Make sure TEMPERATURE sensor type is selected.
(Refer to System Setup Menu, page 11)

2. If LOOP is used, set the minimum and maximum 4 to 20 mA setpoints.

3. Set Units of Measurement (°C or °F).

4. Set Last Cal Date and initials.

5. If applicable, set up relay functions for your application.

CH1

TEMPERATURE

CH2

TEMPERATURE

34

0.00

0.00

100.00

100.00

°F

°F

View Measurement 3 displays the primary value and the channel name. This screen does not time out.

113.0

8 9.0

GF 9950-10 Six Channel Transmitter

Temperature

INPUT Menu

SET UP

CHANNEL 1

ENTER

CH 1 FACTORY

TYPE

FACTORY

CH1 TEMPERATURE

SOURCE

NONE

Press ENTER to start assigning sensors to each channel.
Use the  and  arrow to go to any of the six channels directly.
NOTE: Display only available when the 9950 is in FACTORY mode.

Press the  arrow, use the  and  arrow to select which TYPE of sensor will be assigned to the
channel(s) (1-6).
Choose TEMP, press ENTER to save sensor type.

Press the  arrow, using the  or  to select the input source to the channel.
Sources list will only contain TEMPERATURE sensors or modules.
To change sensor selection after it's been assigned, change the source to NONE, then the sensors can
be reassigned.

CHANNEL 1

NAMEF

TEMPERATURE

CH1 TEMPERATURE

AV°FFE°°

TEMP UNITS

CH1 TEMPERATURE

AVERAGE

OFF

CAL Menu

CH1 TEMPERATURE

OFF

HOLD OUTPUTS

CH1 TEMPERATURE

CSET TEMP->NT

CH1 TEMPERATURE

English, French, German, and Spanish Only. If desired, a custom name can be entered.
Enter 17-character string.
Default = TEMPERATURE

Select °F or °C.
Default = Determined by the SELECT UNITS screen menu. Metric = °C, U.S. Customary = °F.

Dampens display, output and relay response rates.
Select Low, Med, High, OFF.
Default = OFF

ON prevents relays from activating while making adjustments, and relays in PULSE mode will suspend
pulsing. Output is held until the user exits the CAL menu or turns it OFF.
Press the  arrow, using the  or  to select OFF/ON. Press ENTER to save.
Default = OFF

Provides a maximum 20 °C offset to match to a known standard (external reference).

RESET CAL->T

CH1 TEMPERATURE

LAST CAL

12-31-2015 XX

Resets Temperature Calibration to factory settings. After pressing , select YES/NO.

Enter date of calibration (MM-DD-YYYY) and initials of calibrator (XX)

GF 9950-10 Six Channel Transmitter

35

4 to 20 mA

VIEW Mode Menu

CH1

50.0

CUSTOM LABEL

0.0

CH2

53.0

CUSTOM LABEL

0.0

Displays the input value. This is the
normal display and does not time out.

UNIT

5.0

UNIT

5.0

4 to 20 mA Setup Checklist

1. Make sure 4 to 20 mA INPUT sensor type is selected.
(Refer to System Setup Menu, page 11)

2. Set 4 mA value. (refer to your 3rd-party sensor manual)

3. Set 20 mA value. (refer to your 3rd-party sensor manual)

4. If LOOP is used, set the minimum and maximum 4 to 20 mA setpoints.

5. Set Last Cal Date and initials.

6. If applicable, set up relay functions for your application.

CH1

4-20 mA INPUT

CH2

4-20 mA INPUT

CH1 12.00 mAh

CH2 4.50 mAh

50.0

0.0

32.0

0.0

4-20 mA INPUT

INPUT Menu

SETUP

CHANNEL 2

ENTER

CH 2 FACTORY

TYPE

FACTORY

CH 2 4-20 mA

SOURCE

NONE

CHANNEL 2

AVNAMEFE°°

4-20mA INPUT

UNIT

UNIT

5.0

5.0

View Measurement 3 displays the primary value and the channel name. This screen does not time out.

4 to 20 mA input live readout.

Press ENTER to start assigning sensors to each channel.
Use the  and  arrow to go to any of the six channels directly.
NOTE: Display only available when the 9950 is in FACTORY mode.

Press the  arrow, use the  and  arrow to select which TYPE of sensor will be assigned to the
channel(s) (1-6).
Choose 4-20mA, press ENTER to save sensor type.

Press the  arrow, using the  or  to select the input source to the channel.
Sources list will only contain 4-20mA sensors or modules.
To change sensor selection after it's been assigned, change the source to NONE, then the sensors
can be reassigned.

English, French, German, and Spanish Only. If desired, a custom name can be entered.
Enter 17-character string.
Default = 4-20 mA

CH2 4-20mA INPUT

SENSOR UNITS

CH2 4-20 mA INPUT

4 mA VALUE

36

Units are selectable from a list, IF the user selects CUST, the CUSTOM UNITS screen is displayed

UNIT

following this SENSOR UNITS screen. Custom units are only available for English, German, French and
Spanish languages. Enter up to 4 characters describing unit of measure.
Default = UNIT

0.00

GF 9950-10 Six Channel Transmitter

Measurement value of your sensor when its output is 4.00 mA.

4 to 20 mA

INPUT Menu

CH2 4-20mA INPUT

100.00

20 mA VALUE

CH2 4-20mA INPUT

AVERAGE

COFF

CAL Menu

CH2 4-20mA INPUT

OFF

HOLD OUTPUTS

CH2 4-20mA INPUT

CSET STANDARDN-

CH2 4-20mA INPUT

SET SLOPEL

CH2 4-20mA INPUT

Measurement value of your sensor when its output is 20.00 mA.

Dampens display, output and relay response rates.
Select Low, Med, High, OFF.
Default = OFF

ON prevents relays from activating while making adjustments, and relays in PULSE mode will
suspend pulsing. Output is held until the user exits the CAL menu.
Press the  arrow, using the  or  to select OFF/ON. Press ENTER to save.
Default = OFF

Applies a linear offset to the measurement.
For single point calibrations, assign the average value of your process to STANDARD.
For two-point calibrations, assign the min or max value of your process to STANDARD.

Applies a slope to the measurement. The SLOPE is used for two-point calibrations along with the
STANDARD above. If you assigned the min value of your process to the STANDARD, then assign the
max value to the SLOPE. Also, assign the min value to the SLOPE. The slope and standard values
must be at least 0.1 units apart.

RESET CAL

CH2 4-20mA INPUT

LAST CALF

12-31-2015 XX

Resets Standard and Slope calibration to factory settings. After pressing , select YES/NO.

Enter date of calibration (MM-DD-YYYY) and initials of calibrator (XX).

GF 9950-10 Six Channel Transmitter

37

Salinity

VIEW Mode Menu

Setup Checklist

1. Make sure SALINITY sensor type is selected

CH1

81.9

PPT

(Refer to System Setup Menu, page 11).

2. Set Cell Constant. Default is 10.0

0.0000

CH2

85.9
76

0.0000

Displays the value and the temperature
below. This is the normal display and
does not time out.

77

°F

80.000

PPT

°F

80.000

3. Set the Temperature Units (°C or °F).

4. Calibrate the Temperature element.

5. Calibrate the Conductivity sensor.

6. Set Last Cal Date and initials.

7. If LOOP is used, set the minimum and maximum 4 to 20 mA setpoints.

8. Select source for Relay output (SAL or TEMP).

9. If applicable, set up Relay Functions for your application.

Requires prepared calibration solution with a value as close to the
applications being measured.

NOTE: The Salinity reading is calculated from the Conductivity and Temperature measurements. Salinity is only as accurate as the
measurements used for calculation. Salinity can be displayed in PPT (parts per thousand) or PSU (practical salinity units). The units
are equivalent, and both use the Practical Salinity Scale found in Standard Methods for the Examination of Water and Wastewater
for calculation. Because they have an impact on the Salinity measurement, Conductivity and Temperature must be calibrated before
Salinity.

CH1

SALINITY

0.0000

CH2

SALINITY

0.0000

CONDUCTIVITY

81.9

50.0

PPT

80.00 0

PPT

80.00 0

View Measurement 3 displays the primary value and the channel name. This screen does not time out.

CH1 25 mS

INPUT Menu

SETUP

CHANNEL 2

ENTER

CH 2 FACTORY

TYPE

FACTORYT

CH 2 SALINITY

SOURCE

NONE

CHANNEL 2

NAME

SALINITY

Displays the equivalent conductivity value in millisiemens.

Press ENTER to start assigning sensors to each channel.
Use the  and  arrow to go to any of the six channels directly.
NOTE: Display only available when the 9950 is in FACTORY mode.

Press the  arrow, use the  and  arrow to select which TYPE of sensor will be assigned to the
channel(s) (1-6).
Choose SALINITY press ENTER to save sensor type.

Press the  arrow, using the  or  to select the input source to the channel.
Sources list will only contain SALINITY sensors or modules.
To change sensor selection after it's been assigned, change the source to NONE, then the sensors
can be reassigned.

English, French, German, and Spanish Only. If desired, a custom name can be entered.
Enter 17-character string.
Default = SALINITY

CH 2 SALINITY

CCELL CONSTANT

CH 2 SALINITY

CUST CELL CONSTT

38

10.0

50.0000

GF 9950-10 Six Channel Transmitter

Enter cell constant of sensor. Select 10.0, 1.0 or CUSTOM.
Default = 10.0

Enter the precise cell constant from the certifi cate provided with your sensor or from the information
label on the sensor. Shown if CELL CONSTANT = CUSTOM.

Salinity

INPUT Menu

CH 2 SALINITY

PPT

SAL UNITS

CH 2 SALINITY

°F

TEMP UNITS

Salinity Unit: Choose units of measurement
Default = PPT or select PSU

Select °F or °C.
Default = Determined by the SELECT UNITS screen menu. Metric = °C, U.S. Customary = °F.

CH 2 SALINITY

AVERAGE

COFF

CH 2 SALINITY

TEMP COMP

LINEARA

CH 2 SALINITY

1.91

ADJ TEMP COMP

Dampens display, output and relay response rates.
Select Low, Med, High, OFF.
Default = OFF

Select temperature compensation (NONE, LINEAR).
Default = LINEAR

For LINEAR temperature compensation, select a % per ºC slope.
Maximum slope setting is 9.99 % per ºC.
(If Temperature Compensation setting is NONE, this item will not be displayed).
Default = 1.91

GF 9950-10 Six Channel Transmitter

39

Salinity

CAL Menu

CH 2 SALINITY

OFF

HOLD OUTPUTS

CH 2 SALINITY

SET

CCONDUCTIVITYS

CH 2 SALINITY

SET

TEMPERATURE

CH 2 SALINITY

SET

CSALINITYS

CH 2 SALINITY

RESET COND CAL

CH 2 SALINITY

ON prevents relays from activating while making adjustments, and relays in PULSE mode will
suspend pulsing. Output is held until the user exits the CAL menu or turns it OFF.
Press the  arrow, using the  or  to select OFF/ON. Press ENTER to save.
Default = OFF

Manually set value to match to a known liquid standard (external reference, NIST solutions).

Manually set to apply a linear offset to the Temperature measurement element.
SAVING will appear if offset is acceptable, VALUE TOO HIGH will appear if offset is outside of
range.

Manually enter the known Salinity value of your specifi c Ocean.
NOTE: Performing a Salinity calibration does not affect the Conductivity calibration.
WARNING: Salinity calibration is not necessary if a standard conductivity calibration is performed and
the customer is satisfi ed with the results.

Press  to reset the Conductivity calibration to factory default.

°NF

RESET TEMP CAL

CH 2 SALINITY

°NF

RESET SAL CAL

CH 2 SALINITY

AVERLAST CALAGE

12-31-2015 XX

Press  to reset Temperature calibration to factory default.

Press  to reset the Salinity calibration to factory default.

Enter date of calibration (MM-DD-YYYY) and initials of calibrator (XX)

40

GF 9950-10 Six Channel Transmitter

Dissolved Oxygen

VIEW Mode Menu

CH1

5.0

PPM

20.0

0.00

CH2

10.9

20.00

PPM

20.0

0.00

This is the normal display and does
not time out.

5.0

CH1

DO

0.00

10.9

CH2

DO

0.00

CAP EXPIRATION

°NCH1 00/00/0000F

CH2 00/00/0000

PPM

20.00

PPM

20.00

INPUT Menu

20.00

View Measurement 3 displays the primary value and the channel name. This screen does not time out.

Displays Cap Expiration Date MM-DD-YYYY. If sensor cap is missing, CH# 00/00/0000 will be
displayed.

°C

°C

DISSOLVED OXYGEN Setup Checklist (3-2610-51)

2610 wiring on page 4.

1. Make sure DISSOLVED OXYGEN sensor type is selected.
(Refer to System Setup Menu, page 11)

2. Set Units of Measurement (PPM, %SAT, TOR).

3. Set the Temperature Units (°C or °F).

4. Set Salinity reference value.

5. Set Barometric reference value.

6. If LOOP is used, set the minimum and maximum 4 to 20 mA setpoints.

7. Select source for Relay output (PPM or TEMP).

8. If applicable, set up relay functions for your application.

SETUP

CHANNEL 2

ENTER

CH 2 FACTORY

TYPE

FACTORY

CH 2 DO

SOURCE

DO

CH2 DO

AVE NAMEAGE

DO

CH2 DO

PPM

MEASUREMENT

CH2 DO

0.0

SALINITY (PSU)

Press ENTER to start assigning sensors to each channel.
Use the  and  arrow to go to any of the six channels directly.
NOTE: Display only available when the 9950 is in FACTORY mode.

Press the  arrow, use the  and  arrow to select which TYPE of sensor will be assigned to the
channel(s) (1-6).
Choose Dissolved Oxygen press ENTER to save sensor type.

Press the  arrow, using the  or  to select the input source to the channel.
Sources list will only contain Dissolved Oxygen sensors or modules.
To change sensor selection after it's been assigned, change the source to NONE, then the sensors can
be reassigned.

English, French, German, and Spanish Only. If desired, a custom name can be entered.
Enter 17-character string.
Default = DO

Set the units of measurement:
PPM = DO in mg/L; % SAT = DO % saturation; TOR = Oxygen partial pressure. Default = PPM

Manually set value to match application (0 - 42 PSU). Practical Salinity Units (1 PSU = 1g/kg, or 1 PPT)
(Parts per Thousand).
Fresh water = 0.00 PSU. Default = 0.00

GF 9950-10 Six Channel Transmitter

41

Dissolved Oxygen

INPUT Menu

CH 2 DO

1013.20

BAROMETRIC

CH 2 DO

°F

TEMP UNITS

Manually set Barometric value to match application altitude above or below sea level (506.62 - 1114.7 mBAR).
Default = 1013.2 (sea level)

Select °F or °C.
Default = Determined by the SELECT UNITS screen menu. Metric = °C, U.S. Customary = °F.

CH 2 DO

AVERAGE

C OFFL CONST

CAL Menu

CH 2 DO

OFF

HOLD OUTPUTS

CH 2 DO

SET ->

C100 % SOLUTIONS

CH 2 DO

SET ->

C0 % SOLUTIONL

CH 2 DO

Dampens display, output and relay response rates.
Select Low, Med, High or OFF.
Default = OFF

ON prevents relays from activating while making adjustments, and relays in PULSE mode will suspend
pulsing. Output is held until the user exits the CAL menu or turns it OFF.
Press the  arrow, using the  or  to select OFF/ON. Press ENTER to save.
Default = OFF

Allows user to initiate the calibration process.
NOTE: Dissolved Oxygen sensors are calibrated at the factory and do not require regular calibration.
Press  to begin the calibration process. User will be prompted to place sensor in 100% Solution
standard. Press ENTER to save value and establish a calibration point. If a single point calibration is
desired press the  and  keys to exit.

NOTE: 100% calibration must be performed fi rst to allow access to the 0% calibration screen.
Dissolved Oxygen sensors are calibrated at the factory and do not require regular calibration.
Press  to begin the calibration process. User will be prompted to place sensor in 0% Solution standard.
Press ENTER to save value and establish a calibration point.

Resets Dissolved Oxygen calibration to factory settings. After pressing , select YES/NO.

RESET DO CAL ->

42

CHANNEL 2

°NLAST CALF

12-31-2015 XX

GF 9950-10 Six Channel Transmitter

Enter date of calibration (MM-DD-YYYY) and initials of calibrator (XX)

Relay Mode - LOW

Relay source display allows operator to scroll thru relay 1 -4 on base unit and A-D on the external relay module.
External relays that are located in the 8059 External Relay module are limited to the basic relay modes as shown in the chart.

RELAY Menu

RELAY 1

SOURCE

CH 1 PRIMARY

RELAY 1

MODE

OFF

RELAY 1

MODE

LOW

RELAY 1

LABEL

SERELAY 1C

R1 SET LOW

0.00

UNITS

R1 HYSTERSIS

0.50

UNITS

R1 ON DELAY

5.0

SEC

RELAY 1 ACTIVATE

RED BACKLIGHT

NO

RELAY 1

TEST RELAY

(ALL) Select source for each Relay 1 - 4 (relay base unit) or RELAY A, B, C and D (external 8059 relay
module).

Choose PRIMARY (CH 1-6), SECONDARY (CH 1-6), BINARY 1 - 4, DERIVED FUNCTION 1 - 4,
TIMER, or MULTIPLE. Secondary Values are only available for pH, Conductivity/Resistivity, Level, Salinity
and Dissolved Oxygen. Derived Functions are only available when Derived Functions (CH 1-4) are enabled in
the OPTIONS menu.

(ALL) Select the desired mode of operation to switch the Relay state (ON / OFF). Modes avaliable OFF, LOW,
HIGH, WINDow IN, WINDow OUT, PROP PULSE, VOL PULSE, PWM, TOTAL, USP and ERROR. (Refer to
page 18, Relay Modes). Default = OFF. When MODE is set to ERROR, relay energizes if sensor problem is
detected on any channel. ON DELAY delays the energizing of the relay until after the programmed delay time.

(ALL) LOW set point.
Relay energizes when the measurement value is equal or lower than this value.
Set desired value.

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

(ALL) LOW set point.
Relay turns on if process measurement is equal to or lower than this value.
Set desired value.

(ALL) (Shown if LOW, HIGH, WIND IN/OUT, or USP mode)
Hysteresis delays the deactivation of the relay and prevents relay chattering around the set point.
Set the Hysteresis amount (in units of measure from INPUT Mode) to the LOW or HIGH set point values.

(ALL) (Shown if LOW, HIGH, WIND IN/OUT, or ERROR mode)
Set in seconds (up to 9999.9) to delay activating the relay once the relay condition is true.

Select YES to have the Red Backlight illuminate during relay activation.
Select NO to not have the Red Backlight activated by the relay activation.
Default backlight setting - NO

(ALL) Press  or  to turn relay ON or OFF for testing purposes.
Can also be used to reset or latch/unlatch the relay.
Does NOT reset the Totalizer.

GF 9950-10 Six Channel Transmitter

43

Relay Mode - HIGH

Relay source display allows operator to scroll thru relay 1 -4 on base unit and A-D on the external relay module.
External relays that are located in the 8059 External Relay module are limited to the basic relay modes as shown in the chart.

RELAY Menu

RELAY 1

SOURCE

CH 1 PRIMARY

RELAY 1

MODE

OFF

(ALL) Select source for each Relay 1 - 4 (relay base unit) or RELAY A, B, C and D (external 8059 relay
module).

Choose PRIMARY (CH 1-6), SECONDARY (CH 1-6), BINARY 1 - 4, DERIVED FUNCTION 1 - 4,
TIMER, or MULTIPLE. Secondary Values are only available for pH, Conductivity/Resistivity, Level, Salinity
and Dissolved Oxygen. Derived Functions are only available when Derived Functions (CH 1-4) are enabled in
the OPTIONS menu.

(ALL) Select the desired mode of operation to switch the Relay state (ON / OFF). Modes avaliable OFF, LOW,
HIGH, WINDow IN, WINDow OUT, PROP PULSE, VOL PULSE, PWM, TOTAL, USP and ERROR. (Refer to
page 18, Relay Modes). Default = OFF. When MODE is set to ERROR, relay energizes if sensor problem is
detected on any channel. ON DELAY delays the energizing of the relay until after the programmed delay time.

RELAY 1

MODE

HIGH

RELAY 1

LABEL

SERELAY 1C

R1 SET HIGH

0.00

UNITS

R1 HYSTERSIS

0.50

UNITS

R1 ON DELAY

5.0

SEC

RELAY 1 ACTIVATE

RED BACKLIGHT

NO

RELAY 1

TEST RELAY

(ALL) HIGH set point.
Relay energizes when the measurement value is equal or higher than this value.
Set desired value.

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

(ALL) HIGH set point.
Relay turns on if process measurement is equal to or higher than this value.
Set desired value.

(ALL) (Shown if LOW, HIGH, WIND IN/OUT, or USP mode)
Hysteresis delays the deactivation of the relay and prevents relay chattering around the set point.
Set the Hysteresis amount (in units of measure from INPUT Mode) to the LOW or HIGH set point values.

(ALL) (Shown if LOW, HIGH, WIND IN/OUT, or ERROR mode)
Set in seconds (up to 9999.9) to delay activating the relay once the relay condition is true.

Select YES to have the Red Backlight illuminate during relay activation.
Select NO to not have the Red Backlight activated by the relay activation.
Default backlight setting - NO

(ALL) Press  or  to turn relay ON or OFF for testing purposes.
Can also be used to reset or latch/unlatch the relay.
Does NOT reset the Totalizer.

44

GF 9950-10 Six Channel Transmitter

Window IN or Window OUT

Relay source display allows operator to scroll thru relay 1 -4 on base unit and A-D on the external relay module.
External relays that are located in the 8059 External Relay module are limited to the basic relay modes as shown in the chart.

RELAY Menu

RELAY 1

SOURCE

CH 1 PRIMARY

RELAY 1

MODE

OFF

RELAY 1

MODE

mWIND INA

RELAY 1

LABEL

mRELAY 1A

R1 SET LOW

(ALL) Select source for each Relay 1 - 4 (relay base unit) or RELAY A, B, C and D (external 8059 relay
module).

Choose PRIMARY (CH 1-6), SECONDARY (CH 1-6), BINARY 1 - 4, DERIVED FUNCTION 1 - 4,
TIMER, or MULTIPLE. Secondary Values are only available for pH, Conductivity/Resistivity, Level, Salinity
and Dissolved Oxygen. Derived Functions are only available when Derived Functions (CH 1-4) are enabled
in the OPTIONS menu.

(ALL) Select the desired mode of operation to switch the Relay state (ON / OFF). Modes avaliable OFF,
LOW, HIGH, WINDow IN, WINDow OUT, PROP PULSE, VOL PULSE, PWM, TOTAL, USP and ERROR.
(Refer to page 18, Relay Modes). Default = OFF. When MODE is set to ERROR, relay energizes if
sensor problem is detected on any channel. ON DELAY delays the energizing of the relay until after the
programmed delay time.

(ALL) Window IN or Window OUT
Wind IN, relay energizes when the measurement value is INSIDE of two set points, Low and High.
WIND OUT, relay energizes when the measurement value is OUTSIDE of two set points, Low and High.

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

0.0000

GPM

R1 SET HIGH

100

0GPM

R1 HYSTERESIS

0.5000

GPM

R1 ON DELAY

0.00

SEC

RELAY 1 ACTIVATE

RED BACKLIGHT

MULTNOIPLE

RELAY 1

TEST RELAY

OFF

Enter LOW limit of the Window.

Enter HIGH limit of the Window.

(ALL) (Shown if LOW, HIGH, WIND IN/OUT, or USP mode)
Hysteresis delays the deactivation of the relay and prevents relay chattering around the set point.
Set the Hysteresis amount (in units of measure from INPUT Mode) to the LOW or HIGH set point values.

(ALL) (Shown if LOW, HIGH, WIND IN/OUT, or ERROR mode)
Set in seconds (up to 9999.9) to delay activating the relay once the relay condition is true.

Select YES to have the Red Backlight illuminate during relay activation.
Select NO to not have the Red Backlight activated by the relay activation.
Default backlight setting - NO

(ALL) Press  or  to turn relay ON or OFF for testing purposes.
Can also be used to reset or latch/unlatch the relay.
Does NOT reset the Totalizer.

GF 9950-10 Six Channel Transmitter

45

Proportional Pulse

Relay source display allows operator to scroll thru relay 1 -4 on base unit and A-D on the external relay module.
External relays that are located in the 8059 External Relay module are limited to the basic relay modes as shown in the chart.

RELAY Menu

RELAY 1

SOURCE

CH 1 PRIMARY

RELAY 1

MODE

OFF

RELAY 1

MODE

mPROP PULSEA

RELAY 1

LABEL

mRELAY 1AA

R1 PULSE MIN

0.0000

mLPMA

R1 PULSE MAX

100.00

LPM

R1 MAX RATE

120.00

PULSE/MIN

RELAY 1 ACTIVATE

RED BACKLIGHT

%NOE

RELAY 1

TEST RELAY

SC

(ALL) Select source for each Relay 1 - 4 (relay base unit) or RELAY A, B, C and D (external 8059 relay
module).

Choose PRIMARY (CH 1-6), SECONDARY (CH 1-6), BINARY 1 - 4, DERIVED FUNCTION 1 - 4,
TIMER, or MULTIPLE. Secondary Values are only available for pH, Conductivity/Resistivity, Level, Salinity
and Dissolved Oxygen. Derived Functions are only available when Derived Functions (CH 1-4) are enabled in
the OPTIONS menu.

(ALL) Select the desired mode of operation to switch the Relay state (ON / OFF). Modes avaliable OFF, LOW,
HIGH, WINDow IN, WINDow OUT, PROP PULSE, VOL PULSE, PWM, TOTAL, USP and ERROR. (Refer to
page 18, Relay Modes). Default = OFF. When MODE is set to ERROR, relay energizes if sensor problem is
detected on any channel. ON DELAY delays the energizing of the relay until after the programmed delay time.

Proportional Pulse mode varies the frequency of pulses (relay switching on and off) in direct proportion to the
minimum and maximum set points.

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

Set the MINIMUM set point value (pulse frequency) for Proportional Pulse.
Should be set to the application's normal value.

Set the MAXIMUM set point value (pulse frequency) for Proportional Pulse.
Should be set to the absolutely maximum offset allowed by the application.

(ALL except PRESSURE) Set desired maximum pulse rate (300 max) to metering device.
NOTE: Pulse width fixed at 100 ms.

(ALL) (Shown if LOW, HIGH, WIND IN/OUT, or ERROR mode)
Set in seconds (up to 9999.9) to delay activating the relay once the relay condition is true.

(ALL) Press  or  to turn relay ON or OFF for testing purposes.
Can also be used to reset or latch/unlatch the relay.
Does NOT reset the Totalizer.

46

GF 9950-10 Six Channel Transmitter

Pulse Width Modulation

Relay source display allows operator to scroll thru relay 1 -4 on base unit and A-D on the external relay module.
External relays that are located in the 8059 External Relay module are limited to the basic relay modes as shown in the chart.

RELAY Menu

RELAY 1

SOURCE

CH 1 PRIMARY

RELAY 1

MODE

OFF

RELAY 1

MODE

PWM

RELAY 1

LABEL

SERELAY 1C

R1 PWM MIN

0.0000

LPMA

R1 PWM MIN

10.000

LPM

R1 PWM PERIOD

(ALL) Select source for each Relay 1 - 4 (relay base unit) or RELAY A, B, C and D (external 8059 relay
module).

Choose PRIMARY (CH 1-6), SECONDARY (CH 1-6), BINARY 1 - 4, DERIVED FUNCTION 1 - 4,
TIMER, or MULTIPLE. Secondary Values are only available for pH, Conductivity/Resistivity, Level, Salinity and
Dissolved Oxygen. Derived Functions are only available when Derived Functions (CH 1-4) are enabled in the
OPTIONS menu.

(ALL) Select the desired mode of operation to switch the Relay state (ON / OFF). Modes avaliable OFF, LOW,
HIGH, WINDow IN, WINDow OUT, PROP PULSE, VOL PULSE, PWM, TOTAL, USP and ERROR. (Refer to
page 18, Relay Modes). Default = OFF. When MODE is set to ERROR, relay energizes if sensor problem is
detected on any channel. ON DELAY delays the energizing of the relay until after the programmed delay time.

PWM automatically varies the ratio of ON time to OFF time proportional to minimum and maximum range
settings. The relay period is the sum of the time a relay is ON and the time it is OFF.

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

Set MINIMUM value for pulse width modulation.

Set MAXIMUM value for pulse width modulation.

1.000

SEC

RELAY 1 ACTIVATE

RED BACKLIGHT

NO

RELAY 1

TEST RELAY

Set time value for one complete pulse cycle (relay ON time + relay OFF time).

Select YES to have the Red Backlight illuminate during relay activation.
Select NO to not have the Red Backlight activated by the relay activation.
Default backlight setting - NO

(ALL) Press  or  to turn relay ON or OFF for testing purposes.
Can also be used to reset or latch/unlatch the relay.
Does NOT reset the Totalizer.

GF 9950-10 Six Channel Transmitter

47

Volumetric Pulse

Relay source display allows operator to scroll thru relay 1 -4 on base unit and A-D on the external relay module.
External relays that are located in the 8059 External Relay module are limited to the basic relay modes as shown in the chart.

RELAY Menu

RELAY 1

SOURCE

CH 1 PRIMARY

RELAY 1

MODE

OFF

RELAY 1

MODE

VOL PULSE

RELAY 1

LABEL

RELAY 1

R1 SET VOLUME

100.00

L

R1 PULSE WIDTH

1.00

SEC

RELAY 1 ACTIVATE

RED BACKLIGHT

mNOA

RELAY 1

TEST RELAY

mA

(ALL) Select source for each Relay 1 - 4 (relay base unit) or RELAY A, B, C and D (external 8059 relay
module).

Choose PRIMARY (CH 1-6), SECONDARY (CH 1-6), BINARY 1 - 4, DERIVED FUNCTION 1 - 4,
TIMER, or MULTIPLE. Secondary Values are only available for pH, Conductivity/Resistivity, Level, Salinity
and Dissolved Oxygen. Derived Functions are only available when Derived Functions (CH 1-4) are enabled in
the OPTIONS menu.

(ALL) Select the desired mode of operation to switch the Relay state (ON / OFF). Modes avaliable OFF, LOW,
HIGH, WINDow IN, WINDow OUT, PROP PULSE, VOL PULSE, PWM, TOTAL, USP and ERROR. (Refer to
page 18, Relay Modes). Default = OFF. When MODE is set to ERROR, relay energizes if sensor problem is
detected on any channel. ON DELAY delays the energizing of the relay until after the programmed delay time.

(FLOW) The relay will activate for the set pulse width once the specifi c volume of fl uid is registered.

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

Enter volumetric set point value that triggers the relay.

Set the duration of the relay pulse in seconds.
Minimum 0.1 seconds, maximum 999.9 seconds.

Select YES to have the Red Backlight illuminate during relay activation.
Select NO to not have the Red Backlight activated by the relay activation.
Default backlight setting - NO

(ALL) Press  or  to turn relay ON or OFF for testing purposes.
Can also be used to reset or latch/unlatch the relay.
Does NOT reset the Totalizer.

48

GF 9950-10 Six Channel Transmitter

Total Pulse

Relay source display allows operator to scroll thru relay 1 -4 on base unit and A-D on the external relay module.
External relays that are located in the 8059 External Relay module are limited to the basic relay modes as shown in the chart.

RELAY Menu

RELAY 1

SOURCE

CH 1 PRIMARY

RELAY 1

MODE

OFF

RELAY 1

MODE

mTOTALA

RELAY 1

LABEL

RELAY 1

R1 SET TOTAL

100.00

LITERS

RELAY 1 ACTIVATE

RED BACKLIGHT

%NOE

RELAY 1

TEST RELAY

mA

(ALL) Select source for each Relay 1 - 4 (relay base unit) or RELAY A, B, C and D (external 8059 relay
module).

Choose PRIMARY (CH 1-6), SECONDARY (CH 1-6), BINARY 1 - 4, DERIVED FUNCTION 1 - 4,
TIMER, or MULTIPLE. Secondary Values are only available for pH, Conductivity/Resistivity, Level, Salinity
and Dissolved Oxygen. Derived Functions are only available when Derived Functions (CH 1-4) are enabled in
the OPTIONS menu.

(ALL) Select the desired mode of operation to switch the Relay state (ON / OFF). Modes avaliable OFF, LOW,
HIGH, WINDow IN, WINDow OUT, PROP PULSE, VOL PULSE, PWM, TOTAL, USP and ERROR. (Refer to
page 18, Relay Modes). Default = OFF. When MODE is set to ERROR, relay energizes if sensor problem is
detected on any channel. ON DELAY delays the energizing of the relay until after the programmed delay time.

(FLOW) The relay will activate for the set pulse width once the specifi c volume of fl uid is registered.

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

(FLOW) (Shown only if TOTAL) Resettable value that, when exceeded, turns relay on.
Must reset Totalizer (in VIEW Mode) to clear relay.
Set maximum value.

Set the duration of the relay pulse in seconds.
Minimum 0.1 seconds, maximum 999.9 seconds.

Select YES to have the Red Backlight illuminate during relay activation.
Select NO to not have the Red Backlight activated by the relay activation.
Default backlight setting - NO

GF 9950-10 Six Channel Transmitter

49

United States Pharmacopeia

Relay source display allows operator to scroll thru relay 1 -4 on base unit and A-D on the external relay module.
External relays that are located in the 8059 External Relay module are limited to the basic relay modes as shown in the chart.

RELAY Menu

RELAY 1

SOURCE

CH 1 PRIMARY

RELAY 1

MODE

OFF

RELAY 1

MODE

USP

RELAY 1

LABEL

RELAY 1

R1 HYSTERESIS

0.5000

GPM

R1 USP PERCENT

10.0

%

RELAY 1 ACTIVATE

RED BACKLIGHT

mNOA

RELAY 1

TEST RELAY

mA

(ALL) Select source for each Relay 1 - 4 (relay base unit) or RELAY A, B, C and D (external 8059 relay
module).

Choose PRIMARY (CH 1-6), SECONDARY (CH 1-6), BINARY 1 - 4, DERIVED FUNCTION 1 - 4,
TIMER, or MULTIPLE. Secondary Values are only available for pH, Conductivity/Resistivity, Level, Salinity
and Dissolved Oxygen. Derived Functions are only available when Derived Functions (CH 1-4) are enabled in
the OPTIONS menu.

(ALL) Select the desired mode of operation to switch the Relay state (ON / OFF). Modes avaliable OFF, LOW,
HIGH, WINDow IN, WINDow OUT, PROP PULSE, VOL PULSE, PWM, TOTAL, USP and ERROR. (Refer to
page 18, Relay Modes). Default = OFF. When MODE is set to ERROR, relay energizes if sensor problem is
detected on any channel. ON DELAY delays the energizing of the relay until after the programmed delay time.

USP (United States Pharmacopeia) has defi ned a set of conductivity values (limits) to be used for
pharmaceutical water.

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

(ALL) (Shown if LOW, HIGH, WIND IN/OUT, or USP mode)
Hysteresis delays the deactivation of the relay and prevents relay chattering around the set point.
Set the Hysteresis amount (in units of measure from INPUT Mode) to the LOW or HIGH set point values.

Enter USP set points as a percentage below the USP limit.
USP alarm is always a HIGH alarm.

Select YES to have the Red Backlight illuminate during relay activation.
Select NO to not have the Red Backlight activated by the relay activation.
Default backlight setting - NO

(ALL) Press  or  to turn relay ON or OFF for testing purposes.
Can also be used to reset or latch/unlatch the relay.
Does NOT reset the Totalizer.

50

GF 9950-10 Six Channel Transmitter

Error Mode

RELAY Menu

RELAY 1

MODE

ERROR

RELAY 1

LABEL

SERELAY 1C

R1 ON DELAY

0.00

SEC

RELAY 1

TEST RELAY

Relay will activiate when any sensor specifi c error condition occurs.
Refer to page 17 for details.

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

(ALL) (Shown if LOW, HIGH, WIND IN/OUT, or ERROR mode)
Set in seconds (up to 9999.9) to delay activating the relay once the relay condition is true.

(ALL) Press  or  to turn relay ON or OFF for testing purposes.
Can also be used to reset or latch/unlatch the relay.
Does NOT reset the Totalizer.

GF 9950-10 Six Channel Transmitter

51

Binary Input

When the relay source is set to BINARY. The Binary Inputs
can sense if the input is ON (Closed) or OFF (Open).
The four binary inputs only control relay activation and are not
considered a measurement source.
Each binary mode is independent and each of them can be
assigned to a relay mode.

• Binary Input from any point level switches to the 9950 allows
controlling a relay activity.

• The 9950.393-3 relay module allows up to four binary (point
level sensors or similar) to be used to assist in relay control
of an application.

• Binary Input signals can be used with the MULTIPLE source
input menu in the relay menu.

Relay source display allows operator to scroll thru relay 1 -4 on base unit and A-D on the external relay module.
External relays that are located in the 8059 External Relay module are limited to the basic relay modes as shown in the chart.

RELAY Menu

RELAY 1

SOURCE

CH 1 PRIMARY

RELAY 1

MODE

OFF

RELAY 1

SOURCE

BINARY 1

RELAY 1

MODE

OFF

RELAY 1

LABEL

RELAY 1

R1 ON DELAY

0.00

SEC

RELAY 1 ACTIVATE

RED BACKLIGHT

mNOA

RELAY 1

TEST RELAY

mA

(ALL) Select source for each Relay 1 - 4 (relay base unit) or RELAY A, B, C and D (external 8059 relay
module).

Choose PRIMARY (CH 1-6), SECONDARY (CH 1-6), BINARY 1 - 4, DERIVED FUNCTION 1 - 4,
TIMER, or MULTIPLE. Secondary Values are only available for pH, Conductivity/Resistivity, Level, Salinity
and Dissolved Oxygen. Derived Functions are only available when Derived Functions (CH 1-4) are enabled in
the OPTIONS menu.

(ALL) Select the desired mode of operation to switch the Relay state (ON / OFF). Modes avaliable OFF, LOW,
HIGH, WINDow IN, WINDow OUT, PROP PULSE, VOL PULSE, PWM, TOTAL, USP and ERROR. (Refer to
page 18, Relay Modes). Default = OFF. When MODE is set to ERROR, relay energizes if sensor problem is
detected on any channel. ON DELAY delays the energizing of the relay until after the programmed delay time.

(All Binary) Binary Inputs can be set to active the relay.
Requires the 3-9950.393-3 module for use.

(All Binary) Binary Inputs can be set to enable the relay based on whether the Binary input is ON (Closed) or
OFF (Open).
Requires the 3-9950.393-3 module for use.

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

(ALL) (Shown if LOW, HIGH, WIND IN/OUT, or ERROR mode) Set in seconds (up to 9999.9) to delay
activating the relay once the relay condition is true.

Select YES to have the Red Backlight illuminate during relay activation.
Select NO to not have the Red Backlight activated by the relay activation.
Default backlight setting - NO

(ALL) Press  or  to turn relay ON or OFF for testing purposes.
Can also be used to reset or latch/unlatch the relay.
Does NOT reset the Totalizer.

52

GF 9950-10 Six Channel Transmitter

Timer

When the TIMER relay source is selected, the time can be
selected using Period or Weekday modes. Both relay modes
work directly with the time settings and formats that are entered
at start up or adjusted in the options menu. The relay is normally
open until the specifi ed time is reached, at which time the relay
is closed, triggering the relay for a specifi ed duration. The "Hold
while" feature allows the user to hold the current loop output(s)
at the present value and deactivate relays that are associated
with the measurement channel(s) for the specifi ed recovery time.

• Period Mode lets the user set a periodic interval, in days,
hours or minutes, at which the relay will activate. A First
Start screen lets the user set the day and time for the Period
Mode to begin.

• Weekday Mode lets the user specifi c the days of the week,
Sunday, Monday, Tuesday, Wednesday, etc., at which the
relay will activate. A Start Time screen lets the user set the
time of day for the weekday activation. Weekday Mode does
not have a Start Delay parameter.

Caution:
If HOLD WHILE RELAY # ACTIVE setting is changed while an Activation or Recovery is in process, the
setting will be applied after the cycle is complete. To apply the change immediately, cycle power to the 9950.

Recovery

Activation

Time

Duration

Hold measurement

during activation

and recovery

Recovery

Activation

Time

Duration

Sun

Hold measurement

during activation

and recovery

Relay Period Mode

Period 1 Period 2

Activation

Recovery

Duration

Time

and recovery

Period 2

Recovery
Time

and recovery

^

^

^

Period 1

^

Hold measurement

during activation

Relay Weekday Mode

Sunday, Tuesday and Thursday activation

Activation
Duration

Mon Tue Wed Thu Fri

Hold measurement

during activation

Activation
Duration

Activation
Duration

...

Time

...

Time

Timer - Period

Relay source display allows operator to scroll thru relay 1 -4 on base unit and A-D on the external relay module.
External relays that are located in the 8059 External Relay module are limited to the basic relay modes as shown in the chart.

RELAY Menu

RELAY 1

SOURCE

CH 1 PRIMARY

RELAY 1

MODE

OFF

RELAY 1

SOURCE

mTIMERA

RELAY 1

MODE

mPERIODA

RELAY 1

LABEL

RELAY 1

R1 PERIOD

(ALL) Select source for each Relay 1 - 4 (relay base unit) or RELAY A, B, C and D (external 8059 relay
module).
TIMER, or MULTIPLE. Secondary Values are only available for pH, Conductivity/Resistivity, Level, Salinity
and Dissolved Oxygen. Derived Functions are only available when Derived Functions (CH 1-4) are enabled in
the OPTIONS menu.

(ALL) Select the desired mode of operation to switch the Relay state (ON / OFF). Modes avaliable OFF, LOW,
HIGH, WINDow IN, WINDow OUT, PROP PULSE, VOL PULSE, PWM, TOTAL, USP and ERROR. (Refer to
page 18, Relay Modes). Default = OFF. When MODE is set to ERROR, relay energizes if sensor problem is
detected on any channel. ON DELAY delays the energizing of the relay until after the programmed delay time.

(TIMER) Allows the relay to be enabled based off either a PERIOD of time during the day or WEEKDAY to
enable the relay based on a specifi c day during the week.

TIMER in PERIOD mode will allow the user to select a unit of time to enable the relay.

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

Choose PRIMARY (CH 1-6), SECONDARY (CH 1-6), BINARY 1 - 4, DERIVED FUNCTION 1 - 4,

MIN

0UNITS

R1 PERIOD

10

MIN

Select period units in MIN (minute), HOURS, or DAYS, which the relay will automatically enable.

Enter the PERIOD time which would continuously cycle ON the relay in MIN (minute), HOURS, or DAYS.

GF 9950-10 Six Channel Transmitter

53

Timer - Period

RELAY Menu

RELAY 1

09/29/2022

START DATE

RELAY 1

11:30

MULTSTART TIMEIPLE

R1 DURATION

Enter the DATE that the timer feature should start.
Caution: Verify the correct date is programmed into the 9950 during setup.

Enter the START TIME of the feature.
Caution: Verify the correct time of the day is programmed into the 9950 during setup.

30

SEC

HOLD WHILE

R1 ACTIVE

NO

RECOVERY TIME

30

SEC

RELAY 1 ACTIVATE

RED BACKLIGHT

MULTNOIPLE

RELAY 1

TEST RELAY

OFF

Enter the duration (Time ON) of the relay in SEC (seconds).

Choose which channels (one or ALL) display and 4 to 20 MA outputs are frozen to prevent relays from
activating while this feature is used.

Choose RECOVERY TIME in seconds for the display and 4 to 20 mA outputs to start updating after the
TIMER feature has timed out.

Select YES to have the Red Backlight illuminate during relay activation.
Select NO to not have the Red Backlight activated by the relay activation.
Default backlight setting - NO

(ALL) Press  or  to turn relay ON or OFF for testing purposes.
Can also be used to reset or latch/unlatch the relay.
Does NOT reset the Totalizer.

54

GF 9950-10 Six Channel Transmitter

Timer - Weekday

Relay source display allows operator to scroll thru relay 1 -4 on base unit and A-D on the external relay module.
External relays that are located in the 8059 External Relay module are limited to the basic relay modes as shown in the chart.

RELAY Menu

RELAY 1

SOURCE

CH 1 PRIMARY

RELAY 1

MODE

OFF

RELAY 1

SOURCE

mTIMERA

RELAY 1

MODE

mWEEKDAYA

RELAY 1

LABEL

RELAY 1

RELAY 1

SUN

9

9

WED

9

9
9

MON

THU

SAT

(ALL) Select source for each Relay 1 - 4 (relay base unit) or RELAY A, B, C and D (external 8059 relay
module).

Choose PRIMARY (CH 1-6), SECONDARY (CH 1-6), BINARY 1 - 4, DERIVED FUNCTION 1 - 4,
TIMER, or MULTIPLE. Secondary Values are only available for pH, Conductivity/Resistivity, Level, Salinity and
Dissolved Oxygen. Derived Functions are only available when Derived Functions (CH 1-4) are enabled in the
OPTIONS menu.

(ALL) Select the desired mode of operation to switch the Relay state (ON / OFF). Modes avaliable OFF, LOW,
HIGH, WINDow IN, WINDow OUT, PROP PULSE, VOL PULSE, PWM, TOTAL, USP and ERROR. (Refer to
page 18, Relay Modes). Default = OFF. When MODE is set to ERROR, relay energizes if sensor problem is
detected on any channel. ON DELAY delays the energizing of the relay until after the programmed delay time.

(TIMER) Allows the relay to be enabled based off either a PERIOD of time during the day or WEEKDAY to
enable the relay based on a specifi c day during the week.

TIMER in WEEKDAY mode will allow the user to select which day of the week wil be enabled in the relay.

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

TUE

9

FRI

9

TIMER in WEEKDAY mode will allow the user to select a day or multiple days of the week with a START
TIME, DURATION and a HOLD feature.
Default = 10:00, 60 secs, HOLD WHILE RELAY # ACTIVE NO

RELAY 1

11:30

MULTSTART TIMEIPLE

R1 DURATION

30

SEC

RELAY 1 ACTIVATE

RED BACKLIGHT

MULTNOIPLE

RELAY 1

TEST RELAY

OFF

Enter the START TIME of the feature.
Caution: Verify the correct time of the day is programmed into the 9950 during setup.

Enter the duration (Time ON) of the relay in SEC (seconds).

Select YES to have the Red Backlight illuminate during relay activation.
Select NO to not have the Red Backlight activated by the relay activation.
Default backlight setting - NO

(ALL) Press  or  to turn relay ON or OFF for testing purposes.
Can also be used to reset or latch/unlatch the relay.
Does NOT reset the Totalizer.

GF 9950-10 Six Channel Transmitter

55

Multiple

When the Relay Source is set to MULTIPLE, four Boolean logic formulas called "Relay Operators" are available.
Relay operators monitor three different input sources (sensor or binary input) based on the conditions set up by the end user
(HIGH or LOW conditions or binary input ON or OFF) to activate a relay.

The relay will only be activated when the complete formula is satisfi ed.

• A TRUE condition means that the sensor's condition is beyond the setpoint.

• A FALSE condition means that the sensor's condition is within the setpoint.

• If any one of the three conditions shows CHK SENSOR then that condition will be treated as always FALSE.

Example: Set Relay 1 Mode to A | B | C. "This relay will activate IF channel 1 pH falls below 6, OR if channel 2 pH rises above 7.8,
OR if binary input 1 is active (On or Closed). Relay #1 will activate 30 seconds after any one the conditions are met".
Condition A: The pH on Channel 1 is less than 6
Condition B: The pH on Channel 2 is greater than 7.8
Condition C: Binary Input 1 is On
On Delay: 30
When operating properly, all three of these conditions are FALSE. If any one of them becomes TRUE, then Relay 1 will be activated.
Relay 1 will remain activated until the TRUE condition becomes FALSE again, including the hysteresis band.

Relay source display allows operator to scroll thru relay 1 -4 on base unit and A-D on the external relay module.
External relays that are located in the 8059 External Relay module are limited to the basic relay modes as shown in the chart.

RELAY Menu

RELAY 1

SOURCE

CH 1 PRIMARY

RELAY 1

MODE

OFF

RELAY 1

SOURCE

MULTIPLE

RELAY 1

MODE

A | B | C

RELAY 1

MODE

A & B & C

RELAY 1

MODE

A | (B & C)

RELAY 1

(ALL) Select source for each Relay 1 - 4 (relay base unit) or RELAY A, B, C and D (external 8059 relay
module).

Choose PRIMARY (CH 1-6), SECONDARY (CH 1-6), BINARY 1 - 4, DERIVED FUNCTION 1 - 4,
TIMER, or MULTIPLE. Secondary Values are only available for pH, Conductivity/Resistivity, Level, Salinity
and Dissolved Oxygen. Derived Functions are only available when Derived Functions (CH 1-4) are enabled
in the OPTIONS menu.

(ALL) Select the desired mode of operation to switch the Relay state (ON / OFF). Modes avaliable OFF,
LOW, HIGH, WINDow IN, WINDow OUT, PROP PULSE, VOL PULSE, PWM, TOTAL, USP and ERROR.
(Refer to page 18, Relay Modes). Default = OFF. When MODE is set to ERROR, relay energizes if sensor
problem is detected on any channel. ON DELAY delays the energizing of the relay until after the programmed
delay time.

MULTIPLE will use up to 3 sources where the relay will only be activated if these sources meet specified
conditions A | B | C, A & B & C, A | (B & C), A & (B | C) Default = OFF

MULTIPLE mode A | B | C will activate if ANY conditions A, B or C are true.

MULTIPLE MODE A & B & C will ONLY activate if all conditions A, B and C are true.

MULTIPLE MODE A (B & C) will activate if A is true OR if B and C are true.

56

MODE

A & (B | C)

GF 9950-10 Six Channel Transmitter

MULTIPLE MODE A (B | C) will activate if A is true AND if B or C are true.

Multiple

RELAY 1

LABEL

RELAY 1

RELAY 1

SOURCE A

0NONE

RELAY 1

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

Select Source "A", "B", and "C".
Chose any PRIMARY, SECONDARY or BINARY input.

MODE A

OFF

R1 A SET LOW

0.00

LPM

RI A SET HIGH

10.00

MULTLPMPLE

R1 HYSTERESIS

0.5000

GPM

RELAY 1 ACTIVATE

RED BACKLIGHT

NO

RELAY 1

TEST RELAY

Select relay mode, LOW or HIGH alarm.

Select LOW or HIGH alarm for ALL three Sources (A , B, and C).

Enter the set point (LOW or HIGH) for each Source (A, B, and C).

(ALL) HYSTERESIS delays the deactivation of the relay and prevents relay chattering around the set point.
Set the Hysteresis amount (in units of measure from INPUT Mode) to the LOW or HIGH set point values.

Select YES to have the Red Backlight illuminate during relay activation.
Select NO to not have the Red Backlight activated by the relay activation.
Default backlight setting - NO

(ALL) Press  or  to turn relay ON or OFF for testing purposes.
Can also be used to reset or latch/unlatch the relay.
Does NOT reset the Totalizer.

GF 9950-10 Six Channel Transmitter

57

Menu System

VIEW Mode Overview

The top level of screens are referred to as the VIEW Mode. This view displays measurement
values as well as current outputs, derived function values, and relay status. The horizontal bar
graph represents the primary measurement value that is also displayed in the numeric fi eld
above the bar graph. The bar graph is primarily used to display the full scale range of
the sensor, but can be scaled via the OPTION menu item.

During normal operation, the 9950 displays the VIEW mode.

• To select a display, press the  or  arrow keys.

The display selections scroll in a continuous loop.

• Changing the display selection does not interrupt system operations.

• No password is necessary to change display selection.

• Output settings cannot be edited from the View Mode.

• The display will return to the VIEW mode if no button is pressed for 10 minutes.

MENU Mode Overview

The MENU mode enables the user to view and confi gure all menu items.
The fi ve menus available are: CAL, INPUT, LOOP, RELAY, and OPTION.

Error Handling

Errors occurring while on the
measurement screens show a
specifi c message (e.g., Wrong
Sensor). This message will
fl ash and stays on for 3 seconds
and fl ash off. Once the error is
resolved or cleared, the error
message stops.

_ _ _ _ ._

CH1

MISSING SENSOR

9999.9

00.00

CH2

6 2 .8

00.00

7 .0

mV

GPMS

00.00

pH

15.00

°F

MENU Mode is entered by pressing and holding ENTER for three seconds.

To select a menu use the  and  arrow keys to highlight the desired menu and press ENTER
to select the menu.

In the selected menu, use the  and  keys to navigate through the menu.
Use the ,  and  keys to edit the selected item
(Refer to Menu Navigation discussion, page 12).

To save the new selection, press the ENTER key. A message displaying “Saving” will be
displayed for 3 seconds. After this message is displayed, the newly selected value will be
displayed, if applicable. To abandon the changes press the  and  arrows simultaneously.

Password Overview

The password is often required to start editing. Once entered correctly, this password will not
be needed for subsequent edits, until the menu system is exited.
The password is required when the menu system is re-entered.

Your choice of password (STD or CODE) is selected in the Options Menu.

• STD

The standard (STD) password is , pressed in sequence. This password is
designed to protect the 9950 from unintentional changes. It is best suited for systems

where a group of people need to be able to change settings.

• CODE

The CODE default setting is 0000, adjustable to any 4-digit numerical code up to 9999.
Using a personal code provides the maximum degree of security.
This code can be modifi ed in the Options menu.

Password Reset

Turn off 9950. Press and hold all 4 keys on keypad while turning on 9950 and unit
will revert back to STD password.

_ _ _ _ ._

CH1

WRONG SENSOR

9999.9

00.00

CH2

6 2 .8

00.00

7.0

mV

GPMS

00.00

pH

15.00

°F

Scrolling

In some cases, more than one
message or measurement may
need to be displayed. This is
accomplished by alternating the
message portions across the
screen.

PASSWORD TYPE

WRONG CODE

TEXT 3

In the MENU mode, if the
wrong code or password is
entered, an ERROR message
is displayed.

LANGUAGE

0

0000

LANGUAGE

ENTER CODE

LANGUAGE

PASSWORD

SAVING

TEXT 3

To change your CODE, go
to OPTIONS mode, enter
your desired code and press
ENTER. (The STD password
cannot be changed).

58

GF 9950-10 Six Channel Transmitter

Common Menus

Common Menus

The menu system shares certain modes between sensor
types.
The following describes the menus found in common between
most sensor types.

(ALL) Manually select Sensor Type. Source to be assigned to the specifi c loop output.
(Refer to page 11 for further instruction).

LOOP Menu

The following can individually be set for each loop on the 9950. Loops 1 and 2 are in the 9950 base unit.
Loops MOD1 A and MOD1 B are present when a loop module is in the Module 1 Slot. Loops MOD2 A and
MOD2 B are present when a loop module is in the Module 2 Slot.

NOTE:
Menu and Mode displays shown are examples only.
Your displays may vary.

LOOP 1

SOURCE

CH SECONDARY

LOOP 1

LABEL

LOOP 1

LOOP 1

MODE

LOG

L1 4 mA SETPOINT

0.00

UNITS

L1 20 mA SETPOINT

100.00

UNITS

LOOP 1

ERROR VALUE

22 mA

L1 ADJUST 4 mA

4.00

mA

L1 ADJUST 20 mA

21.0

mA

L1 TEST LOOP

12.05

mA

Select source for each loop. Choose PRIMARY, SECONDARY (CH 1-6) or DERIVED FUNCTION 1 - 4.
Secondary Values are only available for pH, Conductivity/Resistivity, Level, Salinity, and Dissolved Oxygen.
Derived Functions are only available for confi gured Derived Functions.

English, French, German, and Spanish languages only.
A custom label can be assigned to the loop for ease of identifi cation.

(COND/RES only) Select LIN/LOG. Default = LIN
Display only visible when Conductivity or Resistivity sensors are available.
Refer to LOG Current LOOP Output, page 66.

(ALL) Set value corresponding to desired 4 mA output. 6 digits max.
Default = 0 (ORP = -999).

(ALL) (Not shown in COND/RES LOG Mode)
Set value corresponding to desired 20 mA output. 6 digits max.
Defaults = 100 (Flow, Cond/Res, Temp), 14 (pH), 1000 (ORP), 10 (Lvl/Prs), 5 (4 to 20 mA), 42 (Sal).

(ALL) Set desired LOOP output value when sensor error (e.g., bad sensor, broken wire) is detected.
Select (3.6 mA, 22 mA,

or NONE).

Default = 22

(ALL) Allows fi ne-tuning to compensate for errors in other equipment connected to the 9950.
Adjust the current output at 4 mA. The display value represents the precise current output.
Adjustment limits: from 3.80 mA minimum to 5.00 mA maximum. Default = 4.00 mA

(ALL) Allows fi ne-tuning to compensate for errors in other equipment connected to the 9900.
Adjust the current output at 20 mA. The display value represents the precise current output.
Adjustment limits: from 19.00 mA minimum to 21.00 mA maximum. Default = 20 mA.

(ALL) Press  or  to manually control the output current value from 3.8 mA to 21.00 mA to test the output of
LOOP. The current loop will revert to automatic control when this menu item is left.

GF 9950-10 Six Channel Transmitter

59

Common Menus

Derived functions are an important calculation to determine the effi ciency of a membrane in a reverse osmosis applications.
Derived calculations can be assigned as a source for either a loop output or to activate a relay.

OPTIONS Menu

FUNCTION 1

(FUNCTION 1 – 4) Confi gure the derived functions, up to four functions available.



to select the correct derived function.

NONE

FUNCTION 1

LABEL

FUNC 1

F1 SUM

SOURCE A

NONE

F1 SUM

SOURCE B

NONE

F1 RECOVERY A

FEED

NONE

F1

PERMEATE

mNONEA

English, French, German, and Spanish only.
A custom label can be assigned to the relay for ease of identifi cation.

Select fi rst sensor to be used in the derived function calculation, display visible only when SUM, DELTA,
RATIO, % PASSAGE, and % REJECTION are selected.
To change sensor selection, source A and B should be changed to NONE then the sensors can be
reassigned.

Select second sensor to be used in the derived function calculation, display visible only when SUM, DELTA,
RATIO, % PASSAGE, and % REJECTION are selected.
To change sensor selection, source A and B should be changed to NONE then the sensors can be
reassigned.

Select fi rst sensor to be used in the derived function, display only visible when % PASSAGE, % REJECT, %
RECOVERY A, RECOVERY B, and RECOVERY C are selected.
To change sensor selection, source A and B should be changed to NONE then the sensors can be
reassigned.

Select second sensor to be used in the derived function, display only visible when % PASSAGE, % REJECT,
% RECOVERY A, RECOVERY B, and RECOVERY C are selected.
To change sensor selection, source A and B should be changed to NONE then the sensors can be
reassigned.

60

GF 9950-10 Six Channel Transmitter

Common Menus

OPTION Menu

ENGLISH
FRANÇ

DEUTCH

ESPAÑOL

中文

TIME FORMAT

Choose desired the language for the 9950. Default = English

24 HR

BINARY ON

SET TIME

08:56

TIMER

DATE FORMAT

MM/DD/YYYY

MULTIPLE

SET DATE

09/29/2022

OFF

SET DECIMAL MARK

999.99

mA

SELECT UNITS

METRIC

mA

CONTRAST

3

mA

Choose a time format between a 24 Hour or an AM/PM clock. Default = 24 HR

Set the time according to the format chosen 00:00

Date Format; MM/DD/YYYY, DD/MM/YYYY, YYYY/MM/DD

Set the date according to the format chosen 00/00/0000

Choose either comma or point according to local practices.
Default = 999.99 (point).

Choose METRIC or US CUSTOMARY

Adjust the displays contrast, 1 - 5
Default = 3

WHITE BACKLIGHT

AUTO LOW

mA

RED BACKLIGHT

ON

White Backlight; Off, Low, High, Auto Low, Auto High

The RED BACKLIGHT illuminates when an error condition is detected or user selected relay(s) are activated.
Default = ON

NOTE: Defaults for most relay functions are dependent upon sensor type and are not listed here.

GF 9950-10 Six Channel Transmitter

61

Common Menus

OPTION Menu

AUTO SCROLLING

OFF

(CH 1-6) Enable AUTO SCROLL for measurement Display screens in VIEW MODE.

SCROLL TIME

4

SEC

DISPLAY

BAR GRAPH

ON

CH2 BAR GRAPH MIN

0.00

GPM

CH2 BAR GRAPH MAX

100.00

GPM

FUNCTION 1

NONE

OFF

CH1

_ _ _ _._

GPM DECIMAL

CH1

_ _ _ _._

°F DECIMAL

CH1

_ _ _ _._

TOTAL DECIMAL

COND/RES

AUTORANGE

OFF

CH1

TOTAL LOCK

OFF

PASSWORD TYPE

STD

%

PASSWORD TYPE

CODE

%

Set the SCROLL TIME interval for each measurement display screen.
Display available when scrolling is set to ON. Minimum 4 sec, maximum 99 seconds.
Press any key to interrupt autoscroll for 20 seconds, or the scroll time, whichever is greater.

(CH 1-6) Display Bar Graph; ON or OFF

(CH 1-6) Enter a value to represent bar at minimum.
Default = 0 (ORP = -999)

(CH 1-6) Enter a value to represent bar at maximum.
Defaults = 100 (Flow, Cond/Res, Temp), 14 (pH), 1000 (ORP), 10 (Lvl/Prs), 5 (4 to 20 mA),
42 (Sal), 20 (DO)

Function 1 - 4, Confi gure the derived function, up to four functions available.

(ALL) Set the decimal to the best resolution for your application for CH 1-6.
The display will automatically scale up to this resolution for each channel.
Select 0, 1, 2, 3, or 4 decimal places, (varies by parameter).
Default = 1 Decimal Place

(pH, COND/RES, TEMP, SAL, DO only)
Set the Temperature decimal to the best resolution for your application for CH 1-6.
The display will automatically scale up to this resolution. Select 0, 1, or 2.
Default = 1 Decimal Place

(FLOW only) Set the decimal to the best resolution for the Permanent and Resettable 2 Totalizer display.
The display will automatically scale up to this resolution. Select 0, 1, 2, 3, or 4 decimal places.
Default = 1 Decimal Place

(CONDUCTIVITY/RESISTIVITY only) Set ON to automatically scale the conductivity/resistivity within range to
be displayed.
Default = OFF

(CH 1-6, FLOW only) requires password to reset the resettable totalizer.
Select OFF, ON (Does not affect Permanent Totalizer).
Default = OFF

(ALL) Select STD, CODE.
Default = STD (Refer to page 12 for further detail)

(CODE) If code is selected
Default Code = 0000 (Refer to page 12 for further detail)

62

GF 9950-10 Six Channel Transmitter

Common Menus

OPTION Menu

MEMO

MEMO

SEC

MODBUS

MODULE

NONE

MODBUS

COMMUNICATION

SETTINGS ->

MODBUS

REMOTE UPDATE

NO

RESET TO

(ALL) Enter 17-character string, if desired.
Default = MEMO

Select which MODULE port the Modbus Module is installed into, MOD1, MOD 2 or NONE
Default = NONE.

Press  to change the settings of the Modbus Module.
Screen available when Modbus module is enabled.
Refer to Modbus Communication Settings Menus, page 78

Setting Modbus Remote update to YES allows remote Modbus device to change the settings on the 9950.
Setting Modbus Remote Update to NO prevents remote devices from make any changes to the 9950.
Screen available when the Modbus module is enabled.
Remote device will still be able to read all of the Modbus parameters.

FACTORY

NO

9950

GENERATION 3

SEC

USER MANUAL

100.00

SEC

VIEW Mode

50.30

CH1

40560.0

0.00

CH2

987.9

65.5

0.00

CH1

50.30

FLOW

0.00

CH2

987.9

FLOW

0.00

CH 1 TOTALIZER

P 40560.0

R 40560.0 ->

LITERS

INTERNAL LOOPS
LOOP 1

LOOP 2

Master Reset - Sets the 9950 back to Factory settings.

Displays Transmitter Generation Version.

QR code for user manual.

Measurement View Mode Screens are depicted in the Sensor Specifi c Menus.
Below are the screens that all parameters share in common.

GPM

R

View Measurement 1 displays the primary value with the secondary value below.

100.00

GPM

This is the normal display and does not time out.

R

100.00

GPM

100.00

View Measurement 2 displays the primary value and the channel name. This screen does not time out.

GPM

100.00

Parameter specifi c screen.
Flow totalizer, pH raw mV, ORP, pH Impedance, pH/ORP Sensor Data, raw mV, 4 - 20 mA input, conductivity,
DO cap expiration date.

12.00

4.00

Displays the internal 4 to 20 mA LOOP output for each channel assigned primary and secondary sources.
(3.6, 22.00 are error output values).

Func 1

Func 2

Func 3

Func 4

MODULE LOOPS
MOD1 A
MOD1 B
MOD2 A
MOD2 B

50.00

100.00

2.00

0.00

18.00

12.00

8.00

4.00

Function values are stated to the right of the function number. Select a derived measurement function,
up to four functions available. (SUM, DIFFERENCE, RATIO, % PASSAGE, % REJECT, % RECOVERY A,
% RECOVERY B, % RECOVERY C) (Refer to page 20 for further details)

Displays the Module 4 to 20 mA LOOP output for each channel assigned primary and secondary sources.
(3.6, 22.00 are error output values).

GF 9950-10 Six Channel Transmitter

63

Common Menus

VIEW Mode

RELAY STATUS
RELAY 1
RELAY 2
RELAY 3
RELAY 4

BINARY STATUS
BINARY 1
BINARY 2
BINARY 3
BINARY 4

MODBUS STATUS
ADDRESS
BUS MSG CNT
9950 MSG CNT
MSG ERR CNT

SYS CONFIG
CH1
CH2
RELAY
MOD1
MOD2

GENERATION 3

SW VER
9950 S/N

TEXT 1

MENU ->

TEXT 3

12/01 10:00

SUN 10:00

OFF

OFF

OFF

999
99999
99999
99999

FLOW
FLOW

399504033

4-20 OUT

30-13

0123456789

ON

ON

ON

Relay status is stated to the right of the relay number as (OFF, ON, DATE/DAY and TIME) for each relay.
If Relay is using Timer Source, time and date of next activation will be displayed.
while counting down.

NOTE: (Reset the Timer) In the RELAY menu, select TEST RELAY function.

The relay(s) will remain ON

The timer will restart if the condition still exists.

Binary labels can be edited by pressing  on the Binary Status screen and scrolling through the Binary Label
submenu. Pressing Cancel (Up and  simultaneously) returns to the Binary Status screen in View Mode.
English, French, German, and Spanish only. Binary status is stated to the right of the binary channel number as
(OFF, ON) for each of the four binary inputs.

The Modbus Status screen is displayed if a Modbus module is installed.

SYS CONFIG shows channel and parameter and relay module part number.

Generation Screen shows version of software and serial number of unit.
Note: Top shows the Generation of 9950

MENU-> will allow access to top level menu by pressing the  key.

DATE

09/01/2016

09:06

EASYCAL

CH1 pH ->

CH2 ORP ->

DATE and TIME display show the current system date and time

pH EASYCAL looks for 4, 7, or 10 pH buffers. (Refer to page 71)

ORP EASYCAL looks for 87, 264, or 476 mV buffers. Press the  to begin EASYCAL. (Refer to page 73)

Important

The Relay, Mod1, and Mod2 number returned by the Sys Confi g Screen is not the Mfr. Part No.
To convert from the displayed number to the GF Signet Mfr. Part No. use the chart below.

Module RELAY, MOD1, or MOD2 Mfr. Part No.

Single Channel Conductivity 399504041 399503941

Dual Channel Conductivity 399504042 399503942

Dual Channel 4 to 20 Out 39950408 399503982

Modbus Module 39950409 39950395M

Relay Four Mechanical 399504031 399503931

Relay Two SS and Two Mechanical 399504032 399503932

Relay Two Mech and Four Binary 399504033 399503933

64

GF 9950-10 Six Channel Transmitter

Troubleshooting

Condition Possible Causes Suggested Solution

Incorrect sensor installed on channel Connect correct sensor to channel

Wrong Sensor

Sensor Type set incorrectly in 9950

Wrong Code Wrong password entered Enter correct password (Refer to page 12)

K-Factor Out Of Range K-Factors cannot be set to 0 Enter K-Factor from 0.0001 to 99999

Set correct sensor TYPE in INPUT menu
(Refer to page 11)

Backlight inoperative

Relays inoperative

Relay always on

– – – – –

Missing Module

Wrong Module

No Probe

(pH/ORP only)

No Sensor

(Flow, Cond/Res, Press,
Level, Temp, 4-20 mA,
Sal, Batch, DO)

Check Preamp

Backlight of Screen is
RED

Missing Cap

Replace Cap

Backlight turned OFF
(NOTE: Backlight can turn off
automatically in AUTO mode)

Set BACKLIGHT to LOW, HIGH, AUTO
LOW or AUTO HIGH in OPTION menu.

Relay Module installed incorrectly Remove and reseat Relay Module

Wrong settings in RELAY menu

Use test relay to verify relay operation then
check relay settings.

Hysteresis value too large Change the hysteresis value

Defective Relay Module Replace Relay or Modbus Module

Measurement exceeds display
capability

Increase Flow units time base

Change unit of measure

Conductivity or Dual Channel 4 to 20
mA Module or Modbus Module is not

Install the module in the correct slot

installed in the Module Slot

The wrong Module (Conductivity or
Dual Channel 4 to 20 mA or Modbus

Replace module with the correct module

Module) is installed in the slot

9950 "cannot communicate" to sensor

Missing sensor or bad temperature

• Check wiring

• Install or replace sensor

element

• Check wiring

9950 "cannot communicate" to sensor

• Install or replace sensor

9950 "cannot communicate" to
the preamp

Error is detected or Relay is activating
the red backlight

Dissolved Oxygen sensor is missing
the sensor cap

Dissolved Oxygen sensor cap has
expired

Check wiring or replace preamp

Correct error condition

Reinstall Dissolved Oxygen sensor cap

Install new Dissolved Oxygen sensor cap

GF 9950-10 Six Channel Transmitter

65

Troubleshooting

Condition Possible Causes Suggested Solution

Broken Glass

Hi Impedance

Check Cal

(pH/ORP only)

Hi Salinity Warning

pH sensor glass has been damaged
and caused very low impedance

The measured pH sensor impedance
is above the high impedance level.

Visually inspect pH/ORP sensor for
cracked and/or chipped glass

Visually inspect the pH electrode and
clean if necessary

Electrode could be in air Ensure electrode is submersed at all times

Perform pH EasyCal (page 71)

Perform ORP EasyCal (page 73)

Slope and/or Offset are out of range

Set pH Slope or Standard (page 71)

Set ORP Slope or Standard (page 73)

Reset pH CAL (page 71)

Reset ORP CAL page 73)

Clean electrode and recalibrate

Calibration Value entered is out of the
range allowed

Enter a lower offset value

Replace sensor

Temperature Warning

Temperature Value entered is out of
the range allowed

Enter a lower offset value

Replace sensor

66

GF 9950-10 Six Channel Transmitter

Averaging

NO AVERAGING, NO SENSITIVITY

With SENSITIVITY set to a large value and AVERAGING set
to OFF (0 seconds), the 9950 responds immediately to every
shift in the process. The dashed red line represents the actual
output of the sensor in varying conditions.

AVERAGING ONLY

With SENSITIVITY still set to a large value and AVERAGING
set to MED or HIGH the rate is stabilized, but a sharp change
in rate is not represented for 8 to 32 seconds or longer.

AVERAGING AND SENSITIVITY

With SENSITIVITY at 50 and AVERAGING set to MED or
HIGH, the rate is stabilized, while a sudden shift in fl ow rate
exceeding 50 units of measure will be displayed immediately.

NOTE: The SENSITIVITY function applies only to FLOW.
The SENSITIVITY function has no effect if the AVERAGING
function is set to OFF. Averaging will not function if the
Sensitivity is set to 0 (Zero).

Important

With Averaging set to Off the Sensitivity function is
disabled. With Sensitivity set to 0 (zero) the Averaging
function is disabled.

To set the unit to Averaging with no Sensitivity set
Sensitivity to a large value, 99999.

5 s0 s 10 s 15 s 20 s 25 s 30 s 35 s

Averaging is different depending on the measurement type.
Seconds to 99.5% of Final Value for Low, Med, and High are:

Sensor Type Low Medium High

Flow 10 40 120

pH 2 4 12

ORP 2 4 12

Cond/Res 4 6 12

Pressure 4 10 30

Level/Volume 4 10 30

Temperature 3 10 30

4 to 20 mA 4 10 30

Salinity 4 6 12

LOG Current Loop Output

In Conductivity/Resistivity, the logarithmic (LOG) mode can be used when a very large measurement range is required,
yet high resolution is needed at the low end (e.g. in a clean-in-place application where a high-resolution conductivity
reading is needed at the low end, while a very high conductivity reading is needed when a cleaning cycle is in progress).

Only two parameters need to be set up, the starting or base conductivity value (4 mA SETPOINT) and the ending or
maximum conductivity value (20 mA SETPOINT). The 4 mA setpoint may be larger than the 20 mA point (reverse span).

What equation should be put in the PLC?

Conductivity = 10

n = (mA input – 4.0)

If only fi xed thresholds are required, they can be calculated in mA. Then the mA value can be checked directly.

Inside the 9950 the following equation is used:

(Log

mA =

NOTE:

If ADJUST 4 mA or ADJUST 20 mA is used, the mA value can be affected. To prevent any problems the adjust function
should only be used to get exactly 4.0 and 20.0 at the PLC. The 9950 is accurate and the adjust functions are only needed
to compensate for an offset due to noise or a not-so-accurate PLC input card.

The error value of either 3.6 mA or 22 mA should be tested fi rst before applying the conductivity equation.

10

n

×

Conductivity – Log

(Log10 20 mA setpnt – Log10 4 mA setpnt)

16 mA

4 mA setpnt)

10

×

(Log10 20 mA setpnt – Log10 4 mA setpnt)

+ Log10 4 mA setpnt

16

+ 4

GF 9950-10 Six Channel Transmitter

67

Custom Measurements

Z

For most vessels, the zero reference point (Z) may be
designated as any height in the vessel.

For horizontal cylinders only, the zero reference point
MUST be the lowest point in the vessel.

L > 0

S

Loc

O(ffset) > 0

Z(ero)

L > 0

O(ffset) < 0

Z(ero)

S

Loc

L < 0

Z

Z(ero)

O(ffset) < 0

S

Loc

Defi ning a Custom Tank

1. Determine where the level measurement
should start. This is the zero reference point (Z).
Review the diagram to help select the best option.

2. Determine where you will mount the sensor.
This is S

. Consult the Sensor manual for

LOC

information regarding the best location for
the sensor.

3. Measure the distance between Z and S

LOC

.

This is O(ffset).

4. Enter the Offset into the INPUT Mode menu.

Zero reference point (Z):

The point in the vessel where you want the 9950 to
display zero (0 ft, 0 gal. etc.).

• If Z is located below the fl uid surface, the 9950
will display a positive level measurement.

• If Z is located above the fl uid surface, the 9950
will display a negative level measurement.

Sensor Location point (S

LOC

):

The point on the level sensor where the
measurement is taken.

• The pressure sensor measures from the
center line of the diaphragm.

Offset (O):

The distance from Z to S

LOC

.

• Enter a positive value in the Calibrate menu
if the sensor is located above Z.

• Enter a negative value in the Calibrate menu
if the sensor is located below Z.

• Enter 0 in the Calibrate menu if the sensor is
located at Z.

68

Level (L):

The distance from Z to surface of fl uid
(displayed as “Level” by 9950).

GF 9950-10 Six Channel Transmitter

Custom Measurements

Level and Volume Calculation in Custom Shaped Vessels

In the LEVEL/VOLUME menu, if Custom Shape is selected in the INPUT menu, you can defi ne
from three to ten Custom Points to establish the relationship of level to volume in the vessel.

• Select Manual Level Measurement mode to edit both level and volume data (dry confi guration).

• Select Automatic Level Measurement mode to accept the sensor measurement of the Level,
while you assign a volumetric value to each custom point (wet confi guration).

• Enter from 4 to 32 custom points to link level and volume values.

• The fi rst custom point must be the lowest fl uid level in the vessel. Each successive point must
be greater than the preceding point.

• The last point must be equal to or greater than the highest fl uid level in the vessel.

• A custom point should be located at all transition points in the vessel shape (for example, at
custom point #9, where the shape changes from a cylinder to a cone).

• The more complex sections should be defi ned with more points.
NOTE: The conical section of the illustration has been defi ned by custom points 1 through 9.
More complex tanks will require additional points to ensure an accurate calculation.

• Simpler sections require fewer defi ning points.
NOTE: A cylinder requires only custom points 9 and 10.

Custom point #10

Custom point #9

Custom point #8

Custom point #7

Custom point #6

Custom point #5

Custom point #4

Custom point #3

Custom point #2

Custom point #1

3000 gal.

1300 gal.

1000 gal.

700 gal.

380 gal.

250 gal.

160 gal.

118 gal.

45 gal.

0 gal.

GF 9950-10 Six Channel Transmitter

69

Custom Measurements

In the LEVEL/VOLUME INPUT menu (Refer to page 31), if SHAPE is set to HORIZ CYLINDER, RECTANGLE or CUSTOM,
the tank shape can be defi ned with the following screens:

CH 2 LEVEL

4

NUM CUST POINTS

CH1 LEVEL

AUTO

LEVEL CALC

FT

0.00

POINT 1 LEVEL

GAL

0.00

POINT 1 VOL

FT

0.00

POINT X LEVEL

If Custom shape is selected, enter the number of measurement points to be used to
defi ne the vessel shape (Refer to Level and Volume Calculation in Custom Shaped
Vessels, page 68). Minimum 4 points, maximum 32 points.
A larger number of points improves accuracy.

Select (AUTO, MAN). Manual allows you to edit both the Level and the corresponding
Volume for your custom tank. Automatic allows you to edit the Volume measurement
(while displaying an automatically calculated Level value). See example below.

Enter the Level (if MAN measurement is selected) at each custom point in your vessel.
If AUTO is selected, indication will read actual tank level in LEVEL UNITS at that point
in your tank.

Set the Volume (if MAN measurement is selected) at each custom point in your vessel.

Where (X) is number of custom points used to calculate level.

FT

0.00

POINT X VOL

Where (X) is number of custom points used to calculate volume.

To set AUTO LEVEL MEAS value:

1. Add a known quantity of fl uid into a tank.

2. POINT 1 LEVEL indicates actual tank level.

3. Press  for POINT 1 VOL. Press  to enter quantity of fl uid (in VOLUME UNITS) added to the tank in step 1.

Press ENTER.

4. Repeat for each point set in NUM CUST PNTS.
For example, in a 25-gallon conical tank set for three custom points:

1. Add 10 gallons of fl uid into the conical tank. POINT 1 LEVEL will indicate actual tank level.

2. In POINT 1 VOL, enter 10.

3. Add another 10 gallons into the tank. POINT 2 LEVEL will indicate actual tank level.

4. In POINT 2 VOL, enter 10.

5. Add the fi nal 5 gallons into the tank. POINT 3 LEVEL will indicate actual tank level.

6. In POINT 3 VOL, enter 5.

70

GF 9950-10 Six Channel Transmitter

()

⎥
⎦

⎤

⎢
⎣

⎡

−×⎟⎟

⎠

⎞

⎜

⎜
⎝

⎛

−−

⎟
⎠

⎞

⎜
⎝

⎛

−

××=

−

2cos

12

hrhhr

r

hr

rA

2

Custom Measurements

Technical Reference for
Level, Volume, and Mass Measurement

The 9950 can automatically perform
level, volume and mass calculations:

• Pressure-to-level

• Mass

• Volume

Pressure to level conversion:

Level = P ÷ (SG × D)
where P = Pressure
SG = Specifi c Gravity of fl uid

D = Density of water

With pressure in psi:

Level (meters) = 0.703069 × (P/SG)

With pressure in bar:

Level (meters) = 1.019715 × (P/SG)

Mass Conversion

m = D × SG × V

A

where m = mass of fl uid
D = density of water = 1000 kg/m

3

SG = Specifi c Gravity of fl uid
V = Volume of fl uid (m3)

m (kg) = 1000 × SG × V

Volume Calculations

Vertical cylinder:

r

V = π × r

where r = radius of cylinder

2

× h

h = height of fl uid

h

Rectangular vessel:

V = w × l × h

where w = width
l = length
h = height

Horizontal cylinder:

V = A × L

where A = area of segment
L = length of vessel

Length

where r = radius of vessel

h = height of segment

GF 9950-10 Six Channel Transmitter

71

Calibration Procedures - pH

EasyCal Procedure - pH

• This procedure simplifi es pH calibration using standard 4.0, 7.0, 10.0 pH buffers only. If
these pH buffers are not available, use MANUAL CAL and calibrate the system using the
STANDARD and SLOPE settings.

• Set sensor temperature in the CAL Mode before performing EasyCal for new electrode
installations.

+

From any VIEW screen, press

(Press again to access CH1 if necessary)

EASYCAL

1.

2.

CH 1 pH ->

CH 2 pH ->

PLACE SENSOR

IN BUFFER 1

START <ENTER>

Place electrode tip in
first pH buffer.
pH 4.0 = 177 mV
pH 7.0 = 0 mV
pH 10 = -177 mV

1

Limit ± 50 mV

then press .

ENTER

Allow for stabilization

_ _ _ _

ENTER CODE

CH1 pH

ENTER

7.00

EASY 13.10 mV

30s

30 seconds

4.

3.

PLACE SENSOR

IN BUFFER 2

START <ENTER>

Place electrode tip in
second pH buffer.

2

EASYCAL

SAVING

CH 1 pH ->

CH 2 pH ->

+

Display returns to
VIEW Mode

CH1

-0.99

CH2

-0.99

ENTER

EASY 184.33 mV

Allow for stabilization

EASYCAL is complete

7.0

77.0

4.0

99.0

CH1 pH

4.00

30s

30 seconds

EASYCAL

CH 1 pH ->

CH 2 pH ->

pH

°F

15.00

pH

°F

15.00

ENTER

NOTE: The solutions
can be used for
calibrating more than
one sensor; however,

the solution must
remain free of debris and must
not be diluted by rinse water
from previous calibrations.

72

GF 9950-10 Six Channel Transmitter

Calibration Procedures - pH

Manual Calibration Procedure - pH

Requires prepared buffers. System calibration is possible with any known pH
solutions within 0 to 14 pH range.

• Select pH values that are proximate to the application range and at least 2 pH
units apart.

• Navigate to the CAL Menu

• Set HOLD OUTPUTS if necessary

• Select CAL AT INSTRUMENT

1.

2.

CH1 pH ->

CH 2 pH ->

To Set Standard:

CH1 pH

SET

pH STANDARD ->

HOLD OUTPUTS

ENTER CODE

Place electrode
tip in pH buffer.

CH1 pH

OFF

_ _ _ _

CH1 pH

CAL

AT INSTRUMENT

RAW 13.25 mV

Allow for stabilization
30 seconds to
several minutes

CH1 pH

7.13

30s

CH1 pH

EASYCAL ->

CH1 pH

SET

TEMPERATURE ->

To Change Reading:

+07.1

AM/PM

RAW 13.25 mV

3

7.13

to accept

ENTER

pH STANDARD ->

CH1 pH

CH 1 pH ->SAVING

pH STANDARD ->

Theoretical mV values

pH @ 25 °C mV

2 +296

3 +237

4 +177

5+118

6 +59

7+0

8 -59

9-118

10 -177

11 -237

12 -296

CH1 pH

SET

3.

4.

To Set Slope:

CH1 pH

SET

pH SLOPE ->

Place electrode tip in
pH buffer two pH units
different than standard.

To Set Calibration Date:

CH1 pH

SET

RESET pH CAL ->

CH1 pH

7.13

RAW 13.25 mV

Allow for stabilization
30 seconds to
several minutes

CH1 pH

100.0

RESET TEMPCAL ->

+

x4
Display returns to
VIEW Mode

30s

CH1 pH

100LAST CAL.00

04-20-2017 XX

To Change Reading:

+07.1

3

AM/PM

pH

13.25

CH1

-0.99

CH2

-0.99

to accept

ENTER

To Change Reading:

04-20-2017 XX

LAST CAL

04-20-2017 XX

7.0

77.0

4.0

99.0

CH1 pH

CH 1 pH ->SAVING

pH SLOPE ->

to accept

ENTER

pH

°F

15.00

pH

°F

15.00

CH1 pH

SET

pH SLOPE ->

CH1 pH

CH 1 pH ->SAVING

05-15-2017 XX

Single-point calibration
sets STANDARD only; GF
recommends a two-point
calibration to set SLOPE in
addition to STANDARD.

Quick Manual
Calibration Procedures:

1-Point Calibration:

1. Set solution standard.

2-Point Calibration

(recommended):

1. Set solution standard.

2. Set solution slope.

CH1 pH

100LAST CAL.00

05-15-2017 XX

GF 9950-10 Six Channel Transmitter

73

Calibration Procedures - ORP

EasyCal Procedure - ORP (one-point calibration)

EasyCal is the fastest and simplest periodic ORP calibration method using any one of three specifi c
buffer solutions.
system using the STANDARD and SLOPE settings.

• Saturate 50 mL of pH 4 (87 mV) or pH 7 (264 mV) buffers with 1/8 g quinhydrone.

• Premixed Light's Solution (476 mV) can be used instead of pH buffers with quinhydrone.

• Set sensor temperature in the CAL Mode before performing EasyCal for new
electrode installations.

1. From any VIEW screen, press

2. Press . (Press again to access CH1 if necessary)

To Calibrate: To Accept:Response:

86.2

AM/PM

Place electrode tip in
saturated pH 7.0 buffer
pH 7.0 = 87 mV

If the required buffers are not available, use MANUAL CAL and calibrate the

+

CH 1 ORP

SAVING

EASY 87.0 mV

87.0

EASY 87.0mV

PLACE SENSOR

IN BUFFER

START <ENTER>

30s

Allow for stabilization

1

30 seconds

ENTER

to accept

NOTE: ORP solutions
made with quinhydrone
are very unstable and
may not read properly
once exposed to air for a

prolonged time.
These solutions must be disposed
of within an hour.

The solution can be used for
calibrating more than one sensor.
However, the solution must
remain free of debris and must
not be diluted by rinse water from
previous calibrations.

Acceptable ranges for the
readings are ± 80 mV
(i.e., 87 ± 80 mV).

To exit menus and return to

9,(:SUHVVŸDQGź

buttons at the same time

+

74

GF 9950-10 Six Channel Transmitter

Calibration Procedures - ORP

Manual Calibration Procedure - ORP

Requires prepared buffers and a prepared quinhydrone solution:
Saturate 50 mL of pH 4 and 7 buffers with 1/8 g quinhydrone.
(System calibration is possible with two known ORP solutions, but use a buffer
close to your own process value).

1.

2.

CH1 ORP ->

CH 2 ORP ->

To Set Standard:

CH1 ORP

SET

ORP STANDARD ->

Place electrode tip in
saturated pH 7.0 buffer.
pH 7.0 = 87 mV

To Set Slope:

3.

CH1 ORP

SET

ORP SLOPE ->

Place electrode tip in
saturated pH buffer two
pH units different than
standard. pH 4.0 = 264 mV

CH1 ORP

OFF

HOLD OUTPUTS

_ _ _ _

ENTER CODE

CH1 ORP

7.13

RAW 13.25 mV

CH1 ORP

CAL

AT INSTRUMENT

CH1 ORP

EASYCAL ->

CH1 ORP

7.13

RAW 13.25 mV

30s

Allow for stabilization
30 seconds to several minutes

To Change Reading:

+07.1

3

AM/PM

257.49

13.25

30s

Allow for stabilization
30 seconds to
several minutes

To Change Reading:

+76.1

3

AM/PM

76.13

RAW 73.25 mV

to accept

CH1 ORP

ENTER

CH 1 pH ->

ORP SLOPE ->

to accept

ENTER

SAVING

CH1 ORP

CH 1 pH ->SAVING

ORP STANDARD ->

CH1 ORP

SET

ORP SLOPE ->

Single-point calibration
sets STANDARD only.

GF recommends a
two-point calibration to
set SLOPE in addition
to STANDARD.

Quick Manual Calibration
Procedures:

1-Point Calibration:

1. Set solution standard.

2-Point Calibration :

1. Set solution standard.

2. Set solution slope.

CH1 ORP

SET

ORP STANDARD ->

4.

To Set Calibration Date:

CH1 ORP

SET

RESET ORP CAL ->

CH1 ORP

100LAST CAL.00

04-20-2017 XX

+

x4
Display returns to
VIEW Mode

To Change Reading:

04-20-2017 XX

LAST CAL

04-20-2017 XX

700.0

00.00

120.0

00.00

to accept

ENTER

CH1 ORP

SAVING

CH 1 pH ->

05-15-2017 XX

mV

00.00

mV

00.00

CH1 ORP

100LAST CAL.00

05-15-2017 XX

Acceptable ranges for the
readings are ± 80 mV
(i.e., 87 ± 80 mV).

NOTE: ORP solutions made with quinhydrone are very unstable and may not read properly once exposed to air for a
prolonged time. These solutions must be disposed of within an hour.

The solution can be used for calibrating more than one sensor.
However, the solution must remain free of debris and must not be diluted by rinse water from previous calibrations.

GF 9950-10 Six Channel Transmitter

75

Calibration Procedures - Conductivity / Resistivity

Calibration Procedure - Conductivity/Resistivity

AutoCal is the fastest and simplest periodic calibration method.
Requires prepared buffer of a value appropriate to your process.

AutoCal Procedure

AutoCal is a single-point calibration system. During this procedure, if the measured

value is within ± 10% of any of the test values listed below, the 9950 will automatically
recognize the test value and calibrate the output to that value.

NOTE: The fi rst step (Reset) is recommended each time an electrode is replaced, but is

NOT necessary upon initial installation or periodic calibration.

NOTE: Ensure that the buffer solution is within ± 5 °C of 25 °C.

1. Reset the sensor to factory calibration. (refer to sensor manual for procedure)

2. On the 9950, select AUTO CAL from the CAL menu. Press .

3. Place the electrode/sensor assembly into the conductivity test solution appropriate
to your operating range. Shake the electrode to dislodge any air bubbles visible on
the surface of the electrode.

4. Allow at least 2 minutes for the electrode response to stabilize.

5. When the display stabilizes, press ENTER.

6. If calibration is successful, 9950 will display "SAVING". If error is too large,
"OUT OF RANGE USE MANUAL CALIBRATION" will display.

Calibration is complete. Return the system to service.

Manual Cal Procedure

NOTE: The fi rst step (Reset) is recommended each time an electrode is replaced,

but is NOT necessary upon initial installation or periodic calibration.

NOTE: Ensure that the buffer solution is within ± 5 °C of 25 °C.

1. Reset the sensor to factory calibration. (refer to sensor manual for procedure)

2. On the 9950, select MANUAL CAL from the CAL menu. Press .

3. Place the electrode/sensor assembly into the conductivity test solution appropriate
to your operating range. Shake the electrode to dislodge any air bubbles visible on
the surface of the electrode.

4. Allow at least 2 minutes for the electrode response to stabilize.

5. When the display stabilizes, press the  key, and enter the value of the buffer
solution using the ,  and  buttons.

6. Press ENTER.

7. 9950 will display "SAVING". If error is too large, "ERR TOO LARGE TO
CALIBRATE" will display.

Conductivity units are
displayed as selected in
the CALIBRATE menu.
Resistivity displayed
when K or M ranges
are selected.

Available buffer values are:

 10
 100
 146.93
 200
 500
 1000
 1408.8
 5000
 10,000
 12856
 50,000
 100,000

(all values in S)

Refer to page 77 to
troubleshoot Calibration Errors

WARNING: Calibration
standards are very unstable
below 50S. For resistivity
applications it is recommended
to use a NIST sensor and enter
the sensor data into the Custom
Cell menu feature.

Calibration is complete. Return the system to service.

76

GF 9950-10 Six Channel Transmitter

Calibration Procedures - Salinity

NOTE: Ensure that the buffer solution is within ± 5 °C of 25 °C.

1. Reset the sensor Conductivity and Temperature calibration to factory calibration (refer to sensor manual for procedure).

2. On the initial commissioning, use an external thermometer, sample the water temperature and calibrate the temperature
element (temperature only required on the initial startup of the sensor).

3. Place the electrode/sensor assembly into the conductivity test solution appropriate to your operating range.
Shake the electrode to dislodge any air bubbles visible on the surface of the electrode.

4. Allow at least 2 minutes for the electrode response to stabilize.

5. When the display stabilizes, press the  key, and enter the value of the buffer solution using the ,  and  buttons.

6. Press ENTER.

7. 9950 will display "SAVING". If value is outside of range error VALUE TOO HIGH or VALUE TOO LOW will display.

Calibration is complete. Return the system to service.

GF 9950-10 Six Channel Transmitter

77

Calibration Procedures - Flow

Calibration Procedure - Flow

Select RATE CALIBRATION to match the dynamic fl ow rate to an external reference. Entering a rate will modify the existing
K-Factor.

Select VOLUME CALIBRATION if the fl ow rate can be determined by fi lling a vessel of known volume. The 9950 will count
the number of pulses generated as the known volume of fl uid passes through the sensor, and then use the information to
calculate a new K-Factor.

Rate Calibration Procedure

1. Press the  to enter the rate calibration.

2. Allow the fl ow to stabilize and then press the .

3. Using the , , and  keys, set the fl ow rate in the text box to match the fl ow rate of the system.

4. 4. Press

5. The 9950 displays the newly calculated K-Factor for your reference.
(If the calculated K-Factor is less than 0.0001 or greater than 999999 (out of range at either extreme), the 9950 displays
"ERROR NEW KF OUT OF RANGE" and returns to RATE CAL. If fl ow is too low to accurately calibrate, the 9950 displays
"ERROR FLOW RATE TOO LOW and returns to RATE CAL.

6. Press ENTER to accept the new K-Factor (9950 displays "SAVING") or press + keys simultaneously to escape without
saving and return to Enter Volume.
NOTE: You may enter your own calculated K-Factor in the CAL menu.

ENTER

to complete the fl ow rate calculation.

CH 1 Flow

RATE CAL ->

FLOW UNITS

GPM

SET FLOW

50.00

0

0050.00

AM/PM

SET FLOW

50.00

Volume Calibration Procedure

1. Press ENTER to start the volumetric calibration period.
The 9950 starts counting pulses from the fl ow sensor.

2. Press ENTER to stop the volumetric calibration period.
The 9950 stops counting pulses from the fl ow sensor.

3. Enter the volume of fl uid known to have fl owed past the sensor during the volumetric calibration period. This will modify the
existing Flow K-Factor.

4. The 9950 displays the newly calculated K-Factor for your reference. (If the calculated K-Factor is less than 0.0001 or greater
than 999999 (out of range at either extreme), the 9950 displays "ERROR VOLUME TOO HIGH" (or LOW) and returns to
VOLUME CAL).

5. Press ENTER to accept the new K-Factor (9950 displays "SAVING") or press + keys simultaneously to escape without
saving and return to Enter Volume.
NOTE: You may enter your own calculated K-Factor in the CAL menu.

CH 1 Flow

VOLUME CAL ->

CH 1

START <ENTER>

CH 1

RUN

0

0050.00

AM/PM

ENTER VOLUME

FLOW UNITS

Refer to page 77 to troubleshoot Calibration Errors

78

GF 9950-10 Six Channel Transmitter

STOP <ENTER>

50.00

Calibration Error Messages

Message Cause Solution

(

Cond/Res) Error > 10% in AutoCal

Out Of Range Use Manual
Calibration

Err Too Large To Calibrate

Error Volume Too Low User-entered volume too small to calibrate

Error New KF Out Of Range The calculated K-Factor too low or high

Error Flow Rate Too Low

Cal Error Out Of Range

Slope Too Close To
Standard

Standard Too Close To
Slope

Level Offset Too Large Offset must be < 1.0 meter

(pH) Buffer not found;
Error > ±1.5 pH units

(ORP) No quinhydrone in buffer
Error greater than ±80 mV

(

Cond/Res) Manual Cal when error > 100%

(pH) Offset > 1.3 pH units;
Slope error > 100%

(Press) Slope must be < ±50% or offset
must be < 2.75 PSI or equivalent

(Rate Cal) Flow too low to accurately
calibrate

(4 to 20 mA) Slope error > 100 Check input at 4 mA and 20 mA settings

(Temp) Offset must be < ±20 °C or
equivalent

(4 to 20 mA) Difference in calibration values
must be > 0.1 units

(pH) Difference in calibration values must
be > 2 pH units

(ORP) Difference in calibration values must
be > 30 mV

(4 to 20 mA) Difference in calibration values
must be > 0.1 units

(pH) Difference in calibration values must
be > 2 pH units

(ORP) Difference in calibration values must
be > 30 mV

Use manual calibration method

• Use 4, & 7 pH buffers (with quinhydrone
for ORP calibration) or Light's Solution

• Clean sensor and retry EasyCal

• Use manual calibration method

• Inspect sensor and wiring for damage

• Clean sensor

• Check reference

• Clean sensor

• Replace sensor

• Correct volume entry

• Use longer calibration period

• Verify volume or rate entered

• Verify fl ow is present

Increase fl ow

• Check sensor range

• Check reference

• Replace sensor

• Check sensor

• Use fresh buffer

• Use two different buffer values

• Clean sensor

• Clean sensor

• Use fresh 4, 7, 10 pH buffers

• Use two different buffer values

• Decrease offset

• Replace sensor

Pressure Too High

Pressure Too Close To Zero

Value too High
(Salinity)

Value too Low
(Salinity)

Pressure must be lower than 2.5 PSI or
equivalent to do zero cal

Pressure must be higher than 3 PSI or
equivalent to do slope calibration

Salinity value outside of measurement
valid range 0 to 42 PPT

Temperature value outside of
measurement valid range and -2 to 35 C°

Decrease pressure

• Increase pressure

• Check reference

• Verify application range does not exceed
42 ppt

• Remove, clean and calibrate sensor

• Verify correct cell constant was selected

GF 9950-10 Six Channel Transmitter

79

USP Limits

USP (United States Pharmacopeia) has defi ned a set of conductivity values (limits)
to be used for pharmaceutical water. The standard requires that conductivity
measurement without temperature compensation be used for these applications.
The limits vary according to the temperature of the sample. The 9950 has the USP
limits stored in memory. It will automatically determine the proper USP limit based
on the measured temperature. Important Conductivity TEMP COMP must be set to
NONE and Unit Of Measure must be set to S.

Using the USP function

USP setpoints are defi ned as a percentage below the USP limit, so a USP alarm
is always a HIGH alarm. The 9950 can be set to warn you if the conductivity
approaches within a set percentage of the USP limit.

The following settings and conditions are required for a USP relay function:

1. In the RELAY menu:

• RELAY MODE must be set to USP.

2. In the INPUT menu:

• COND UNITS must be set to μS.

• TEMP COMP must be set to None.

Example:

• The water temperature is 19 ºC, so the USP limit is 1.0 S.

• The USP PERCENT is set to 40%.

• The relay will be activated when the conductivity value reaches 40% below the

1.0 USP limit, or 0.6 S.

• If the water temperature drifts to more than 20 ºC, the 9950 will automatically
adjust the USP limit to 1.1. The relay will now be activated when the
conductivity value reaches 40% below 1.1 S (0.66 S).

Temperature

Range (ºC)

0 to < 5 0.6

5 to < 10 0.8

10 to < 15 0.9

15 to < 20 1.0

20 to < 25 1.1

25 to < 30 1.3

30 to < 35 1.4

35 to < 40 1.5

40 to < 45 1.7

45 to < 50 1.8

50 to < 55 1.9

55 to < 60 2.1

60 to < 65 2.2

65 to < 70 2.4

70 to < 75 2.5

75 to < 80 2.7

80 to < 85 2.7

85 to < 90 2.7

90 to < 95 2.7

95 to < 100 2.9

100 to < 105 3.1

USP limit

(μS)

NOTE: Relay will activate if USP limit is exceeded, Temperature Comp is set

to Linear or Pure Water, Conductivity Measurement is NOT in uS, or if
the Conductivity Sensor Electronics is indicating a measurement error.

Modbus

The 9950 Modbus Module allows the 9950 to be connected to a serial Modbus RS485
network. The Modbus Module will allow for PLCs and Scada Systems to query the current
readings, channel status, derived function values, state of the relay and 4 to 20 mA
outputs, along with status of the 9950 and Modbus communications. Detail programming
information is available in the 9950 Modbus Programming Manual.

Default Communication Parameters
ModBus Address 95
ModBus Termination Off
ModBus Mode RTU
ModBus Baud Rate 19.2K
ModBus Parity Even
ModBus Endian Big

80

GF 9950-10 Six Channel Transmitter

Modbus Menus

OPTION Menu

MODBUS

MODULE

NONE

MODBUS

Select which MODULE port the Modbus module is installed into, MOD1, MOD 2 or NONE
Default = NONE.

COMMUNICATION

SETTINGS ->

Press the  Arrow key to change the settings of the Modbus Module

Modbus Communication Settings Menus

MODBUS

ADDRESS

95

NETWORK

Set the Modbus address of the 9950.
The default address is 95

The 9950 Modbus Module has an electronic termination network.

TERMINATION

NO

MODBUS

BAUD RATE

19.2 K

MODBUS

PARITY

EVEN

MODBUS

ENDIAN

BIG

The Termination can be activated by setting the value to Yes.
The default value is No (the termination is off).

Set the baud rate of the Modbus network.
The default value is 19.2K baud, 19200 baud.

Set the parity of the Modbus network.
The default value is Even parity.

Set the byte order in which the 9950 transmits fl oating point numbers in the Modbus protocol. The default
value is Big Endian.

RESET TO

DEFAULT

NO

ACTIVATE

SETTINGS

NO

Reset all Modbus setting to the default values.

Activate setting send all the change to the default parameter to the Modbus module. If you do not activate
the setting the confi gured setting will not take effect until after the 9950 is power cycled.

Maintenance

• Clean the instrument case and front panel with a soft cotton cloth dampened with a mild liquid soap solution.

• Never wipe the front window with static retentive
cloths such as wool or polyester which may induce a static charge. If a static charge develops on the window, you may notice
temporary blotches form on the screen. When this occurs, clean the front window with an anti-static cloth, or a soft cotton cloth
and anti-static spray or a mild liquid soap solution to remove the static charge.

GF 9950-10 Six Channel Transmitter

81

Specifi cations

General

Input channels ............Six channels, programmable for

Digital (S

3

L) or frequency input

Outputs.......................Two 4 to 20 mA output in base unit,

Two or four 4 to 20 mA outputs in
optional modules,

Two or four programmable relay
outputs optional

Enclosure and Display

Case Material .............PBT

Window ....................... Shatter-resistant glass

Keypad ....................... 4 buttons, injection-molded

silicone rubber seal

Display ........................ Dot Matrix LCD

Update Rate ...............1 s

LCD Contrast .............. 5 settings

Indicators .................... Two horizontal digital bar graphs,

four LED relay status indicators

Enclosure

Size .....................¼ DIN

Mounting

Panel ................... ¼ DIN, ribbed on four sides for panel

mounting clip inside panel, silicon
gasket included

Wall ...................... Large enclosure (sold as an accessory)

Terminal Blocks

Pluggable screw type: use minimum 105 °C rated wire
Torque ratings

Power/Loop..........0.49 Nm (4.4 lb-in.)

Freq/S

3

L ...............0.49 Nm (4.4 lb-in.)

Relay....................0.49 Nm (4.4 lb-in.)

Connector wire gauge:

Power, Loop .........12 to 28 AWG

Freq/S

3

L ...............16 to 28 AWG

Module connector wire gauge:

Relay....................12 to 28 AWG

Environmental

Ambient Temperature:

DC Power ...............-10 °C to 70 °C (14 °F to 158 °F)

AC Power ...............-10 °C to 60 °C (14 °F to 140 °F)

Storage Temp .........-15 °C to 70 °C (5 °F to 158 °F)

Relative Humidity........ 0 to 100% condensing for (front only);

0 to 95% non-condensing (rear panel)

Maximum Altitude .......4,000 m (13,123 ft)

Enclosure Rating .......... NEMA 4X/IP65 (front face only)

Installation Category Cat II
Pollution Degree 2

Performance Specifi cations

System Accuracy

• Primarily dependent upon the sensor.

System Response

• Primarily dependent upon the sensor. Transmitter adds
a maximum of 150 ms processing delay to the sensor
electronics.

• Minimum update period is 100 ms.

• System response is tempered by the display rate, output
averaging and sensitivity feature.

Electrical Requirements

Power to Sensors

Voltage...............................

+4.9 to 5.5 VDC @ 25 °C, regulated

Current............................... 30 mA Maximum

Short Circuit .......................Protected

Isolation ............................. Low voltage (< 48 V AC/DC)

Power Requirements

DC (3-9950-10,

3-9950-11) 24 VDC nominal (12 to 32 VDC,

±10% regulated). A UL60950-1 or
UL61010-1 certifi ed power supply
must be used. Power supply shall
also be rated for operation at

4000 m altitude.

AC (3-9950-11).................. 100-240 VAC 50-60 Hz, 24 VA max

Maximum Current

...............200 mA (w/o optional relay module)*

500 mA (with optional relay module)*

Current

Loop ...................... 12 to 32 VDC, ±10% regulated

4 to 20 mA (30 mA max.)
Overvoltage protection

....... 48 V Transient Protection Device

(for DC ONLY)
Current limiting for circuit protection
Reverse-Voltage protection

*The current draw of the other modules and the sensors are minimal

Sensor Input Specifi cations

Digital (S3L) Sensors .......Serial ASCII, TTL level, 9600 bps

Frequency (Flow) Sensors: 0.5 to 1200 Hz

Accuracy ..........................

± 0.5% of reading max error @ 25 °C

Resolution........................ 1 s

Repeatability .................... ± 0.2% of reading

Rejection.......................... No Effect ± 1 A per volt

Short Circuit ..................... Protected

Reverse Polarity .............. Protected

Update Rate ....................(1/frequency) + 100 ms

Shipping Weights

Base Unit ....................0.63 kg (1.38 lb)

Relay Module..............0.19 kg (0.41 lb)

Standards and Approvals

• CE, UL, CUL, WEEE , UKCA

• RoHS Compliant

China RoHS (Go to www.gfps.com for details)

Declaration of Conformity according to FCC Part 15

This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received,
including interference that may cause undesired operation.

• Manufactured under ISO 9001, ISO 14001 and ISO 45001

82

Graphical User Interface created with emWin licensed by SEGGER

GF 9950-10 Six Channel Transmitter

Specifi cations

Binary Input Specifi cations (3-9950.393-3)

Input Voltage Range

(without damage) .................. -5 VDC to 30 VDC

(no operation below 0 VDC)

Max. Voltage Rating ............. 30 VDC

Max. Current Rating ............. 6.0 mA

Maximum input voltage for

signal “Off” (low or "0") ........ 1.5 VDC

Minimum input voltage for

signal “On” (high or "1") ........ 3.0 VDC

Maximum current draw for

signal “0” (low): ..................... <500 A DC

Minimum current draw for

signal “1” (high): ................... 500 A

Typical current draw for

signal “1” (high): ................... 6.0 mA at 30 VDC

4.8 mA at 24 VDC

2.4 mA at 12 VDC

1.0 mA at 5 VDC

Current Loop Specifi cations (Internal and Modules)

Analog Outputs .............. Two 4 to 20 mA output in base unit,

Two or four 4 to 20 mA outputs in
optional modules

Current Loop Out ........... ANSI-ISA 50.00.01 Class H

(Passive, external voltage required)

Voltage........................... 12 to 32 VDC, ±10% regulated. Use

UL60950-1 or UL61010-1 certifi ed
power supply. Power supply shall
also be rated for operation at
4000 m altitude.

Max. Impedance: ........... 250  @ 12 VDC

500  @ 18 VDC
750  @ 24 VDC

Span .............................. 3.8 to 21 mA Adjustable, reversible

Accuracy ........................ ± 32 A max. error @ 25 °C @ 24

VDC

Resolution...................... 6 A or better

Temp. Drift ..................... ± 1 A per °C

Isolation ......................... Low voltage (< 48 VAC/DC)

Update Rate ..................100 mS nominal

Zero ............................... 4.0 mA factory set; user programmable

from 3.8 to 5.0 mA

Full Scale .......................

20.00 mA factory set; user
programmable from 19.0 to 21.0 mA

Power Supply Rejection ± 1 A per V
Actual update rate determined by sensor type
Short circuit and reverse polarity protected

Error Condition ..............

Selectable error condition 3.6 or 22 mA
or None

Test Mode ...................... Increment to desired current

(range 3.8 to 21.00 mA)

Relay Specifi cations

Dry-Contact Relays

Type ...................................... SPDT

Form ..................................... C

Max. Voltage Rating ............. 30 VDC or 250 VAC

Max. Current Rating ............. 5 A resistive

Solid-State Relays

Type ...................................... SPDT

Form ..................................... C

Max. Voltage Rating ............. 30 VDC or 30 VAC

Max. Current Rating ............. 0.050 A

Hysteresis ............................. Adjustable (absolute in

Engineering Units)

On Delay............................... 9999.9 seconds (max.)

Test Mode ............................. Set On or Off

Maximum Pulse Rate ........... 300 pulses/minute

Proportional Pulse ................ 300 pulses/minute

Volumetric Pulse Width......... 0.1 to 3200 s

PWM Period ......................... 0.1 to 320 s

Input Types

• Digital (S

3

L) or AC frequency

• Open collector

• 4 to 20 mA input via the 8058-1 iGo Signal Converter

• pH/ORP input via the Digital (S3L) output from the
2751 pH/ORP Sensor Electronics

• Raw Conductivity/Resistivity via the Direct Conductivity
Module or the Digital (S3L) output from the 2850
Conductivity/Resistivity Sensor Electronics

Sensor Types:

Flow, pH/ORP, Conductivity/Resistivity, Pressure,

Temperature,

Level/Volume, Salinity, Dissolved Oxygen, Other (4 to 20 mA)

Display Ranges:

pH ...............................-1.00 to 15.00 pH

pH Temp. ....................-99 °C to 350 °C (-146 °F to 662 °F)

ORP ............................-1999 to +1999.9 mV

Flow Rate ................... -9999 to 99999 units per second,

minute, hour or day

Totalizer ......................0.00 to 99999999 units

Conductivity ................ 0.0000 to 99999 S, mS, PPM and

PPB (TDS), k, M

Cond. Temp. ...............-99 °C to +350 °C (-146 °F to 662 °F)

Temperature ...............-99 °C to +350 °C (-146 °F to 662 °F)

Pressure .....................-40 to 1000 psi

Level ...........................-9999 to +99999 m, cm, ft, in, %

Volume ......................... 0 to 99999 cm3, m3, in3, ft3, gal, L, lb, kg, %

Salinity ........................0 to 100 PPT*

Salinity Temp Range ...-2 to 35 C° (28.5 to 95 F°)
Dissolved O

...............0 to 50 mg/L, 0 to 200%

2

* Salinity measurements are temperature compensated to
42 PPT. Any salinity value above 42 PPT (42.01 to 100
PPT) will not be compensated and should only be used as a
reference. Although the 9950 can measure up to 100 PPT, a
warning message will be displayed when measured values
are above 42 PPT.

GF 9950-10 Six Channel Transmitter

83

Ordering Information

9950 Transmitter Base Unit:
Dual Channel, Multi-Parameter, AC Power and DC Power

Mfr. Part No Code Description

3-9950-10 159 002 075

3-9950-11 159 002 076

9950 Base Unit – Two Channel Multi-Parameter Inputs, Two 4 to 20 mA
Outputs, Panel Mount, DC Power

9950 Base Unit – Two Channel Multi-Parameter Inputs, Two 4 to 20 mA
Outputs, Panel Mount, AC or DC Power

Optional Modules

3-9950.393-1 159 310 268 Relay Module with 4 Mechanical Relays
3-9950.393-2 159 310 269 Relay Module with 2 Mechanical and 2 Solid State Relays
3-9950.393-3 159 310 270 Relay Module with 2 Mechanical Relays and 4 Binary Inputs
3-9900.394-1 159 001 846 Single Channel Direct Conductivity/Resistivity Module
3-9950.394-2 159 001 847 Dual Channel Conductivity Module
3-9950.395-M 159 001 905 Modbus Module
3-9900.398-2 159 001 848 Dual Channel 4 to 20 mA Current Loop Output Module

Accessories

3-8050.396 159 000 617 RC Filter Kit (for relay use), 2 per kit
3-8058-1 159 000 966 i-Go® Signal Converter, wire-mount
3-9950.391 159 310 278 Connector Kit, In-Line, 9950 Transmitter
3-9950.392 159 310 279 Relay Module Connector Kit, 9950 Transmitter

3-9900.392 159 001 700 Wall Mount Enclosure Kit
3-9000.392-1 159 000 839 Liquid Tight Connector Kit, NPT (1 pc.)
3-5000.399 198 840 224 5 x 5 inch Retrofi t Adapter
3-8050.392 159 000 640 CR200 ¼ DIN Retrofi t Adapter

Georg Fischer Signet LLC, 5462 N. Irwindale Avenue, Irwindale CA 91706 U.S.A. • Tel. [phone]
For Worldwide Sales and Service, visit our website: www.gfps.com • or call (in the U.S.): [phone]
For the most up-to-date information, please refer to our website at www.gfps.com

3-9950-10.090 Rev. 1 01/23 English © Georg Fischer Signet LLC 2023