GF Signet 8860 User Manual

Signet 8860 Dual Channel Conductivity/Resistivity Controller

*3-8860.090*

3-8860.090 Rev. G 11/12 English

English

CAUTION!

• Remove power to unit before wiring input and output connections.

• Follow instructions carefully to avoid personal injury.

• This product should only be used for the purposes and in the manner described in this manual.

Conductivity/Resistivity

Relay 1

Installation

1. Punch out panel and de-burr edges. Recommended clearance on all sides between instruments is 1 inch.

2. Place gasket on instrument, and install in panel.

3. Slide mounting bracket over back of instrument until quick-clips snap into latches on side of instrument.

4. Connect wires to terminals.

5. To remove, secure instrument temporarily with tape from front or grip from rear of instrument. DO NOT RELEASE. Press
quick-clips outward and remove.

6. If cleaning is necessary, wipe the front of the unit with a damp cloth.

7. The live contacts on the back of this unit must be covered to avoid accidental shock hazard.

gasket on
front side

96mm (3.8 in.)

96 mm

(3.8 in.)

102 mm

(4.0 in.)

Optional
Rear Cover

56 mm
(2.2 in.)

Panel Cutout

92 x 92 mm

(+ 0.8, - 0 mm)

3.6 x 3.6 in.

(+0.031, -0 in.)

panel

of panel

RELAY 1

COM

N/O

N/C

- OPEN COLL 4

OPTION

OUTPUT

RELAY 3,4

quick-clip

terminals

mounting

RELAY 4

RELAY 3

RELAY 2

COM

N/O

POWER

N/OCOM N/C

L

N/C

COM

N/O

N

N/C

OPEN COLL 3

-

SGNL 2

TEMP 2

ISO GND

SHLD

SGNL 1
MP 1
E
T

OPEN

HLD

ISO GND

COLL 3,4

S

bracket

C1 23.45 µS

C2 8.72 µS

Signet

Transmitter

Relay 2

ENTER

Specifi cations

General

Compatible electrodes: Signet 2818 to 2823 (Standard or

Certifi ed Cond/Resist Sensors)

Enclosure:

• Rating: NEMA 4X/IP65 front (NEMA 4X Rear cover available)

• Case: PBT

• Panel case gasket: Neoprene

• Window: Polyurethane-coated polycarbonate

• Keypad: Sealed 4-key silicone rubber

• Weight: 8860-AC: 0.58 kg (1.28 lb) 8860: 0.55 kg (1.2 lb)
Display (Alphanumeric 2 x 16 LCD) :

• Contrast: User selected, 5 levels

• Update rate: 1.5 s
Sensor input range:

• Conductivity: 0.01 μS/cm to 400 000 μS/cm

• Resistivity: 10 k•cm to 100 M•cm

• TDS: 0.023 to 200 000 PPM nominal (adjustable μS/PPM)

• Temperature:

-25 °C to 120 °C (-13 °F to 248 °F) PT 1000; 25 ºC = 1096 
Accuracy:

• Conductivity/Resistivity: ± 2% of reading

• Temperature: ± 0.5 ºC (0 ºC to 100 ºC)

Electrical

Power requirements:
3-8860-AC: 100 to 240 VAC ± 10% , 50 to 60 Hz, 20VA or
11 to 24 VDC ±10%, regulated, 0.5 A max
3-8860: 11 to 24 VDC ±10%, regulated, 0.5 A max
Three 4 to 20 mA Outputs:

• Passive, isolated, fully adjustable and reversible
4 to 20 mA outputs are independently source selectable

• Max loop impedance:
150  @ 12 V, 450  @ 18 V, 750  @ 24 V

• Update rate: ~100 mS

• Accuracy: ±0.03 mA @ 25°C, 24 VDC

Open-collector outputs (2 available, optically isolated):

• 50 mA sink or source, 30 VDC max. pull-up voltage

• Programmable for:

• High or Low setpoint with adjustable hysteresis

• Pulse operation (max. rate: 400 pulses/min)

• USP standards

• Time delay: 0 s to 6400 s.

Relay outputs (up to 4 SPDT relays available)

• Maximum resistive load: 5 A @ 250 VAC, 5 A @ 30 VDC

• Isolation between open contacts: 500 V minimum

• Programmable for:

• High or Low setpoint with adjustable hysteresis

• Pulse operation (max. rate: 400 pulses/min)

• USP standards

• Time delay: 0 s to 6400 s

Environmental

Ambient operating temperature: -10 °C to 55 °C (14 °F to 131 °F)

•

• Storage temperature: -15 °C to 80 °C (5 °F to 176 °F)

• Relative humidity: 0 to 95%, non-condensing

• Maximum altitude: 2000 m (6562 ft)

• Insulation category: II

• Pollution degree: 2

Standards and Approvals

CE

• EN61326: Immunity & Emissions for Control Equipment

• EN61010: Safety
UL listed
Manufactured under ISO 9001 for Quality, ISO 14001 for
Environmental Management and OHSAS 18001 for Occupational
Health and Safety.
China RoHS (Go to www.gfsignet.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.

Electrical Connections

Caution: Failure to fully open terminal jaws before removing wire may permanently damage instrument.
This product must be provided with a means to disconnect all current carrying conductors connected to the main AC line, or,
as part of the building installation.

Wiring Procedure

1. Remove 9 mm to 12 mm (0.35 in. to 0.47 in.) of insulation from wire end.

2. Press the orange terminal lever downward with a small screwdriver to open terminal jaws.

3. Insert exposed (non-insulated) wire end in terminal hole until it bottoms out.

4. Release orange terminal lever to secure wire in place. Gently pull on each wire to ensure a good connection.

Wiring Removal Procedure

1. Press the orange terminal lever downward with a small screwdriver to open terminal jaws.

Wiring Tips:

• Do not route sensor cable in conduit containing AC power wiring - electrical noise may interfere
with sensor signal.

• Routing sensor cabling in grounded metal conduit may prevent moisture damage, electrical
noise, and mechanical damage.

• Seal cable entry points to prevent moisture damage.

• Do not insert two wires into a single terminal. If necessary, splice the wires together before
inserting into the terminal.

RELAY 1

RELAY 2

RELAY 3 RELAY 4

Electrical shock hazard exists!

Never connect live AC lines to the
instrument.

Always connect a ground wire to
the ground terminal when using
AC power.

Caution:





N/C N/O COM N/C N/O COM N/C N/O COM N/C N/O COM

- OPEN COLL 4

- OPEN COLL 3

+ OPEN COLL 4

+ OPEN COLL 3

- LOOP 1

- LOOP 2

+ LOOP 1

- LOOP 3

+ LOOP 2

+ LOOP 3

POWER

L

N

-

+

LISTED

U

L

E171559

¨

OUTPUT OPTION

OPEN

COLL 3,4

RELAY 3,4

SHLD

ISO GND

SGNL 1

TEMP 1

SHLD

ISO GND

Output Option Switch

• In OPEN COLLECTOR position, relays 3 and 4 are open
collector outputs as shown.

• In RELAY 3, 4 position, relays 3 and 4 are dry contact relays
identical to relays 1 and 2.

• The menu references in the 8860 display will not change.
Outputs 3 and 4 will be identifi ed as "Relay" regardless of
switch setting.

LR92369

SGNL 2

TEMP 2

L

100 - 240V

N

50-60Hz, 20VA

-

11 - 24V

0.5 A

+

~

3-8860.610 D

4 to 20 mA loop Outputs

The current loops in the 8860 are passive circuits.
12-24VDC must be provided from an external source.
A single loop is illustrated for clarity.

8860 4 to 20 mA outputs

Loop 1

-

+

-

*

Loop 2

+ +

Loop 3

-

Internal open-collector

output circuit

Outputs

-

+

-

+

2

PLC or Recorder

Channel 1
4-20 mA in

Channel 2
4-20 mA in

Channel 3
4-20 mA in

+

-

+

-

+

-

12-24 VDC

Power

Supply

+

-

8860 Dual Channel Conductivity/Resistivity Controller

Sensor Input Connections

Hysteresis

Time

Low Setpoint

Process

Relay energized

Relay relaxed

Hysteresis

Time

High Setpoint

Process

10

5

Relay 1 Rng: μS

10.00 --> 5.00 >

Relay/Open Collector PlsRate:

100 Pulses/min >

10 μS = 0 pulses/min.

7.5 μS = 50 pulses/min.
5 μS = 100 pulses/min.

RANGE defines where the pulsing starts
and where it reaches the maximum rate.

Pulse rate

µS -----

>

0 pulses

100 pulses

The Pulse Rate determines what the
maximum rate will be. The 8860 maximum
capability is 400 pulses per minute.

• The 8860 will accept two independent sensor input signals.
The two sensors may be of different cell constant values.

• Do not route sensor cable in any conduit containing AC power
wiring - electrical noise may interfere with the signal.

• Cable shield MUST be maintained through cable splice.

• Use three conductor shielded cable for cable extensions up
to 30 m (100 ft) max. for measurements below 10 M (above

0.10 μS).

• Maximum cable length for resistivity measurements above

10 Mis 25 ft, and solution temperatures must be between
20 °C and 100 °C.

0.010μS
100 MΩ

UPW @ 25°C

0.054μS

18.3 MΩ

Bottled

USP

Rinse
Water

3-2820, 3-2840 ( 0.10 Cell)

3-2819, 3-2839

1μS
1MΩ

10μS

100KΩ

Water

3-2822, 3-2842 (10.0 Cell)

3-2821, 3-2841 (1.0 Cell)

(0.01 Cell)

100μS

10KΩ

3-2823

1,000μS 10,000μS

200μS

Cooling Tower
Waste Waters

Brackish Sea Water

(Salinity)

50,000μS

Deionization Regen. Chemicals

Alkali Cleaners, Acids/Bases

(20.0 Cell)

200,000μS

400,000μS

100,000μS

SHLD

ISO GND

TEMP 1

SGNL 1

RED
WHITE
BLACK

SILVER (SHLD)

Relay and Open Collector Functions

The 8860 is equipped with 4 SPDT relays that can be confi gured
for High alarm, Low alarm, Proportional pulse or USP operation.

• Low: Output triggers when process variable is less than
setpoint.

• High: Output triggers when process variable is higher than
setpoint.

• Off: Disables output pulse.

SILVER (SHLD)
BLACK

WHITE

RED

SHLD

ISO GND

SGNL 2

TEMP 2

• Pulse Operation

The output emits a 100 mS pulse at a rate defi ned by the

Source, Pulse Range and Max PlsRate settings, and by the
process condition. The maximum pulse rate is 400 pulses per
minute.

Example: As the process falls below 10 μS the output will

start pulsing in relation to the process value, the max pulse
endpoint and the programmed pulses/min. Pulse rate
will increase as the process approaches the programmed
endpoint.

38860 Dual Channel Conductivity/Resistivity Controller

Signet

Conductivity/Resistivity

Transmitter

C1 23.45 µS

C2 8.72 µS

Relay 1

Relay 2

ENTER

VIEW menu

• During normal operation, the ProcessPro displays the VIEW menu.

• When using the CALIBRATE or OPTIONS menus, the ProcessPro will return to the VIEW
menu if no activity occurs for 10 minutes.

• To select the item you want displayed, press the UP or DOWN arrow keys. The items
will scroll in a continuous loop. Changing the display selection does not interrupt system
operations.

• No keycode is necessary to change display selection.

• Output settings cannot be edited from the VIEW menu.

View Menu

Display Description

C1 1000.00 μS/cm
C2 30.00 μS/cm

Monitor C1 Conductivity and C2 Conductivity simultaneously. This is the
permanent display when Channel 2 is ON.

C1 1000.00 μS/cm

25.0 ºC

Monitor Channel 1 Conductivity and Channel 1 Temperature. This is the
permanent display when Channel 2 is OFF.

The VIEW displays below are temporary. The permanent display will return after 10 minutes

C2 30.00 μS/cm

25.0 ºC

Monitor Channel 2 Conductivity and Channel 2 Temperature. This view is
available only when Channel 2 is ON.

Reject C1 → C2

97.00

Monitor Percent Reject, Difference, or Ratio
(Channel 1 to Channel 2 or Channel 2 to Channel 1)

Loop 1 12.03 mA
Loop 2 5.69 mA

Monitor Loop 1 and Loop 2 current output simultaneously.

Loop 3 13.7 mA

Monitor Loop 3 and status of Relays 3 and 4 (Open Collector 3 and 4).

R3 ON R4 PLS

Last Cal

Monitor date for scheduled maintenance or date of last calibration.

04-20-08

4

8860 Dual Channel Conductivity/Resistivity Controller