The 9950 Dual Channel Transmitter is a two channel controller that can support two sensors
of same or different types in one instrument. The sensor types supported by the 9950
are Signet Flow, pH/ORP, Conductivity/Resistivity, Salinity, Temperature, Pressure, Level,
3-9950-1, -2
NOTE:
Prior to installation, Check
www.gfsignet.com for
software updates to your
device. See page 48, Field
Software Update, for more
information.
• English
• Deutsch
• Español
• 中文
Dissolved Oxygen, and devices that transmit a 4 to 20 mA signal with the use of the
8058 iGo
The 9950 includes advanced features such as derived functions, advanced multiple relay
modes, and timer based relay functions. Derived functions allows for the control of a relay
or current loop with the sum, delta (difference), or ratio of two measurements. Multiple
relay modes allow up to three signals to be used for the control of a single relay, and can
be any combination of analog and binary inputs. The timer relay modes allow a relay to be
activated on a repeating basis from every minute to once every 30 days. Weekday timer
mode allows a relay to be energized, on a specifi c day or days of the week at a specifi c
time.
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
• Direct Single Channel Conductivity Resistivity Module
• Dual Channel 4 to 20 mA Current Loop Output Module
• Dual Channel Conductivity Module
• Modbus Module
Compatibility
The 9950 is compatible with all GF Signet
products listed in the column to the right.
pH and ORP electrodes require the
Signet 2750 or 2751 DryLoc® Sensor
Electronics (sold separately).
Conductivity/Resistivity
measurement requires the Signet
Direct Conductivity Resistivity Module,
Dual Channel Conductivity Module
or 2850 Conductivity/Resistivity Sensor
Electronics (sold separately).
Note: The 9950 is not compatible with the
3-2850-63 Dual Channel 2580 device.
• 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
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 Signet 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.
3-9950-2
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):__________________
Allowable panel thickness 2.36 mm (0.093 in.) to 33 mm (1.31 in.)
2
9950 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
CH2CH1
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
Channel 2 Input
(Frequency/S
AC Power Terminals
Channel 1 Input
(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 3-9950-1 or 3-9950-2
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 3-9950-2 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
• 3-9950.398-2 Dual Channel 4 to 20 mA Current Loop Output Module
• 3-9950.394-2 Dual channel Conductivity Module
• 3-9950.395-M Modbus Module
Channel 1 and Channel 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
USB Interface
• Software updates will be provided through the USB port
9950 Transmitter
3
Sensor Wiring
515/8510
5252536/85122540
FLOW
200021002507
Start-Up Guide
9950 Frequency
DC POWER
Loop
Black
Red
No connection
Silver
FLOW
Loop
+V
FREQ
X
DATA
GND
+V
CH2CH1
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
Blk Red Shld
S1
225023502450
2551*2750/27512850
* 2551-XX-21, -41
Display Magmeter
NOTE: The 2850 has no SHIELD wire.
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
CH2CH1
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+VShield+V
2S3L/FreqGNDS3L
3GNDS3LGND
4Not Used+VNot Used
25512750/512850
Black
No connection
White
Shield
Loop
Loop
+V
X
FREQ
DATA
GND
+V
CH2CH1
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
CH2CH1
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
S3L GND.
NOTE: 3-2610-51 only.
9950 S3L Inputs
4
9950 Transmitter
Start-Up Guide
Sensor Wiring
2551-XX-11
Blind Magmeter
Sensor
Terminal
1Black (+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
CH2CH1
FREQ
DATA
GND
+V
FREQ
DATA
GND
Frequency
Black
Red
No connection
White
Shield
Only in case of EMI interference.
See Frequency Output Technical Notes (2551 & 2552) at right.
2Red (S3L/Freq)
3White (GND)
4Not Used
Input Wiring for 2551 and 2552 sensors
• Either Frequency or Digital (S3L) may be used.
• Signet 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 (see page 29).
2552
9950 Frequency
PWR+
PWR–
4
Loop1+
3
Loop1–
Loop2+
Loop2–
FREQ
X
DATA
GND
CH2CH1
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
CH2CH1
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
CH2CH1
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.
9950 Transmitter
5
Power Wiring
Start-Up Guide
WARNING
DO NOT connect AC power to the DC version
THE 3-9950-1 MUST BE POWERED BY
12 - 32 VDC at 0.5 A.
3-9950-1 and 3-9950-2
DC POWER
PWR+
PWR–
Loop1+
Loop1–
Loop2+
Loop2–
FREQ
DATA
GND
CH2CH1
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
CH2CH1
FREQ
N
100-240 VAC~
50-60 Hz, 24VA Max
Made in U.S. from U.S. and imported par
DATA
GND
L
DC power optional
Red
Red
Caution:
Electrical shock hazard exists!
Never connect live AC lines to the instrument.
3-9950-2
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.
6
9950 Transmitter
Start-Up Guide
Relay Module Wiring
• Terminals accept 12 to 24 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
AC or DC
Flow
9950.393 Internal Power
N/O 1
N/C 1
COM 1
N/O 2
N/C 2
COM 2
X
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
+
power
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
power that can be drawn from the module is 6mA at 30 VDC.
9950 Transmitter
7
Conductivity Module Wiring
Start-Up Guide
Single Channel
Conductivity Module
Dual Channel
Conductivity Module
Loop Wiring
PLC
or
Recorder
–
+
Shield
White
Black
Red
PLC
or
Recorder
–
+
SHLD
TEMP
ISO GND
SIGNAL
Power
Supply
–
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
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
Modbus Module
RS485
RCVR
+
–
PLC
8
9950 Transmitter
Yellow
D1 + RS485
Brown
(Optional) Shield
D0 + RS485
GND
Shield recomended in
noisy environment
Start-Up Guide
Operation
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:
1. Select desired language using the [UP] and [DOWN] 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.
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.
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.
4
ENGLISH
FRANÇ
DEUTCH
ESPAÑOL
中文
ENTER
TIME FORMAT
24 HOUR
TEXT 3
SET TIME
08:56:47
DATE FORMAT
TEXT 3
MM/DD/YYYY
SET DATE
TEXT 3
02/25/2016
SET DECIMAL MARK
TEXT 3
999.99
SELECT UNITS
TEXT 3
U.S. CUSTOMARY
SETUP
TEXT 3
CHANNEL 1
PRESS ENTER
3
SETUP
CHANNEL 2
PRESS ENTER
PRESS ENTER
EXIT STARTUP
24 HOUR
AM/PM
GERMAN
LANGUAGE
00:00:040
LANGUAGE
AM/PM
MM/DD/YYYY
DD/MM/YYYY
YYYY/MM/DD
LANGUAGELANGUAGE
ENTER
09:11:04
02/25/20162
AM/PM
99.999
99,999
METRIC
U.S. CUSTOMARY
02/25/2016
LOOKING FOR
SENSOR TYPE
TEXT 3
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.
8. Press to move to the next selection SETUP CHANNEL 1.
Press ENTER, ('Looking for Sensor Type' will appear on
the screen).
The 9950 will search for an attached S
3
L sensor on
Channel 1. The found sensor type will be highlighted.
If your desired sensor is not highlighted, use the
or to scroll through the sensor list and select another
sensor type.
Press ENTER to save sensor type selected.
Press or to access screens to adjust common
sensor parameters.
= edit, ENTER = Save, += Cancel.
Press + to return to SETUP CHANNEL 1 screen.
9. Press to move to the next selection, SETUP CHANNEL 2.
Repeat steps in number 8 to set up Channel 2.
Press to go back to Channel 1, if desired.
When done, press + together one time exits to the
previous menu. Press + together a second time to exit
Easy Start Up.
Easy Set Up can be
entered by setting
either or both channels
to Factory and cycling
MM/DD/YYYY
DD/MM/YYYY
YYYY/MM/DD
OR
NONE
FACTORY
FLOW
pH
ORP
100% SOLUTION
ENTER
saves
changes
ENTER
saves
changes
DATE FORMAT
NAME
SAVING
power on the 9950.
9950 Transmitter
9
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
display area
Channel 2
display area
Numeric
Values
or labels
Bar Graph
Numeric
Values
or labels
Bar Graph
Relay 1
Indicator LED
CH1
00.00
CH2
0 0.0 0
Backlight Sensor
(do not block)
Relay 2
Indicator LED
9999.9
9999.9
9999.9
9999.9
Relay 3
Indicator LED
UOM
UOM
9 9.9 9
UOM
UOM
9 9.9 9
ENTER
Relay 4
Indicator LED
4
Units of Measure
(GPM, pH, sec, %, etc.)
Units of Measure
(GPM, pH, sec, %, etc.)
Menu Navigation Keys
10
9950 Transmitter
UP, DOWN keys
Scroll through Menu options or adjust values during editing
Press both together to exit a menu or escape without saving
RIGHT key
Select item or character to edit
ENTER
ENTER key
Access menus
Save changes
Operating Instructions
Warranty InformationTable of Contents
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.
Signet 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).
Product Registration
Thank you for purchasing the Signet line of Georg
Fischer measurement products.
If you would like to register your product(s), you can now
register online in one of the following ways:
• Visit our website www.gfsignet.com.
Under Service and Support click Product
Registration Form
• If this is a pdf manual (digital copy), click here
General Information .........................................................1
Ordering Information ......................................................72
9950 Transmitter
11
Dimensions
y
3-9950-1/-2
99.06 mm
(3.90 in.)
1234
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.
12
9950 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. Base Unit (required)
b. Optional Relay Module
c. Optional Module 1
d. Optional Module 2
Each item is ordered separately. Modules are fi eld-replaceable at any time.
See Module Installation (pg. 11) and Ordering Information (pg. 68) sections 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.
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 7.
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.
9950 Transmitter
13
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 Module
3-9950.398-2 159 001 848 Dual Channel 4 to 20 mA Current Loop Output Module
3-9950.395-M 159 001 905 Modbus Module
Direct Conductivity Resistivity Module
Compatible with all GF Signet Conductivity Electrodes. Maximum Conductivity cable
length is 30 meters (100 feet). For longer distances use the 3-2850 Conductivity Sensor
Electronics. Up to two modules can be installed in a 9950 Transmitter.
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
Signet 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
515/8510X
525X
2000X
2100X
2507X
2536/8512X
2537X
2540X
2551X
2552X
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.
14
9950 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-Signet 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
(see System Setup Menu discussion, page 9).
9950 S3L Inputs
X
PWR+
PWR–
Loop1+
Loop1–
Loop2+
Loop2–
FREQ
DATA
GND
CH2CH1
FREQ
DATA
GND
DC POWER
+V
+V
+V
FREQ
DATA
GND
8058-1
8058-1
4-to-20 mA
+GF+
Input
4-20 mA input S3L Output
4-20 mA to S
Signet 8058 i-Go™
3
L Converter
Output
L
3
S
Black
No connection
Red
White
Shield
Important!
The 9950 is not compatible with the 3-8058-2
Dual Channel iGo device.
Relay Functions
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
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.
Generation II, or greater, supports the ability to activate the
Red Backlight when a relay is activated. An optional check
box is displayed during the programming of a relay that will
turn the Red Backlight on when the relay is activated. The
Red Backlight can be activated by any relay or relay mode.
Generation II, or greater, English, French, German, or
Spanish Languages only. The relays can have a custom
label assigned for easy of identifi cation.
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.
High Setpoint
16
Cycle Time
Process
Hysteresis
Relay energized
Relay de-energized
CAUTION!
If power is lost to the 9950 Transmitter during a
cycle, the Cycle Time will reset. If the condition
still exists after power is restored, the relay will be
energized for the complete Cycle Time.
9950 Transmitter
Time
Cycle High/Low:
The relay will energize for a set length of time after the
process value goes above (or below) the setpoint.
The relay will stay on for the CYCLE TIME and then turn off,
even if the process value is still above (or below) the setpoint.
The cycle will not repeat until the cycle time completes and
either the process value goes below the set point minus the
hysteresis for Cycle High or goes above the setpoint plus the
hysteresis for Cycle Low.
In FLOW, Cycle High activates the relay each time the volume
reaches the SET VOLUME setpoint (see page 23).
NOTE: To reset the timer (or volume in Flow): in the RELAY
menu, select TEST RELAY function. The timer will reset to 0
if the condition no longer exists when the TEST is performed.
The timer will restart if the condition still exists.
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
Relay energized
Relay de-energized
Time
High Limit
Hysteresis
Low Limit
Process
Window
Hysteresis
Relay Modes
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
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.
Window OUT example
100 pulses
Starting pointEndpoint
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.
9950 Transmitter
17
y
Relay Modes
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
Note:
• The pulse width will be 100% of the relay period
(relay always ON) when the process value is
greater than the maximum range.
Relay is
always ON
• 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.
NOTE: Relay LEDs will fl ash in PWM mode.
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
• 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.
18
9950 Transmitter
Relay Modes
• Multiple
When a Relay Source is set to "MULTIPLE," the mode presents four Boolean logic formulae called "Relay Operators." Each
Operator can be programmed with up to three different conditions. The relay will only be activated when the complete formula
is satisfi ed.
Boolean Relay Logic Operations
RELAY 1
MODE
FLO(A | B | C)NITS
(A l B l C) means
"Activate this relay when
any condition (A, B, or C)
is true."
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.
• Binary
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.
(A & B & C) means
"Activate this relay only
when all conditions (A, B,
and C) are true."
RELAY 1
MODE
A & B & C
(A l (B & C) ) means
"Activate this relay if A is
true OR if B AND C are
both true."
RELAY 1
MODE
A | (B & C)
(A & (B l C) ) means
"Activate this relay only if A
is true AND either B or C are
also true."
Example:
A 2282 Guided Float Switch is mounted in a tank. The output of
the Float Switch will prevent a relay from activation if the tank is
below the position of the Float Switch.
RELAY 1
MODE
A & (B | C)
• 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 1Period 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
MonTueWed ThuFri
Hold measurement
during activation
Activation
Duration
Activation
Duration
...
Time
...
Time
9950 Transmitter
19
RO Membrane
RO Membrane
RO Membrane
Feed
Concentrate
Permeate
RO Membrane
RO Membrane
RO Membrane
Feed
Concentrate
Permeate
RO Membrane
RO Membrane
RO Membrane
Feed
Concentrate
Permeate
Feed
Concentrate
RO Membrane
RO Membrane
RO Membrane
Permeate
Derived Functions
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.
Up to four derived Functions can be defi ned and used as the source for display and output functions.
• 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.
• 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
9950 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
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
00.0 0
CH2
6 2 .8
00.0 0
7 .0
mV
GPMS
00.00
15.00
pH
°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
(see Menu Navigation discussion, page 22).
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).
9950 Transmitter
21
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.
INPUT Menu
NOTE:
Menu and Mode displays shown are examples only.
Your displays may vary.
CAL
INPUT
INPUT
LOOP
RELAY
OPTION
LOOP Menu
LOOP 1
SOURCE
CH SECONDARY
LOOP 1
LABEL
LOOP 1
LOOP 1
MODE
LOG
L1 4 mA SETPOINT
4
(ALL) Manually select Sensor Type (See page 9 for further instruction).
Allows user to reset 9950 Transmitter to Factory settings. Allows user to confi gure sensor
ENTER
specifi c parameters.
Note: User is strongly discouraged from changing the sensor type away from the correct sensor.
ENTER
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.
Select source for each loop. Choose CH 1 PRIMARY, CH 1 SECONDARY, CH 2 PRIMARY, CH 2 SECONDARY,
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
See LOG Current LOOP Output discussion in Appendix.
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
(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), 80 (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.
22
9950 Transmitter
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