GF Signet 9950 User manual

Signet 9950 Conductivity Transmitter
English
Operating Instructions
Description
*3-9950-1P1.090*
3-9950-1P1.090 Rev 0 09/18
• English
• 中文
The 9950 Conductivity Transmitter is a two channel controller that can support two sensors in
one instrument. The sensor types supported by the 9950 are the Signet Conductivity/Resistivity
sensors.
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 specific day or days of the week at a specific time.
Your 9950 system may include the following modules:
• Direct Single Channel Conductivity Resistivity Module
• Dual Channel Conductivity Resistivity Module
• Four Channel Mechanical Relay Module (Optional)
• Two Mechanical and Two Solid State Relay Module (Optional)
• Two Mechanical Relays and Four Binary Inputs Module (Optional)
The 9950 Conductivity Transmitter is compatible with the Conductivity sensors listed in
the table below.
• Conductivity/Resistivity measurement requires the conductivity resistivity module
or Signet 2850 Conductivity/Resistivity Sensor Electronics (sold separately).
Compatibility
Cell
Constant
¾ NPT ISO 7/1-R3/4 Other
0.01 3-2819-1 (198 844 010)
3-2839-1V (159 001 810)
3-2839-1VD (159 001 811) 3-2819-S1 Sanitary
Tri Clamp (159 000 085)
0.1 3-2820-1 (198 844 000)
3-2840-1V (159 001 812)
3-2840-1VD (159 001 813)
1 3-2821-1 (198 844 001)
3-2841-1V (159 001 814)
10 3-2822-1 (198 844 002)
3-2842-1V (159 001 816)
3-2842-1VD 159 001 817)
20 3-2823-1 (198 844 003)
Your system may also be wired to a special order sensor with any of the following features.
• High Temperature and Pressure options.
• Wetted materials (Hastelloy-C, Monel and Titanium) and sensor lengths.
• Wet-Tap, ball valve retractable sensor for long insertion length.

2Signet 9950 Conductivity Transmitter
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
Refer to your local Georg Fischer Sales office 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 office 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).
●Follow instructions carefully to avoid personal injury.
●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 safety warnings before using with this
product.
●Remove power to unit before wiring connections.
●Wiring connections to this product should only be
performed by qualified personnel.
●Do not use unit if front panel is cracked or broken.
Standards and Approvals
Warranty Information
Product Registration
Safety Information
Standards and Approvals
• CE, UL, CUL, WEEE
• RoHS Compliant
• Manufactured under ISO 9001 for Quality, ISO 14001 for
Environmental Management and
OHSAS 18001 for Occupational Health and Safety.
China RoHS (Go to 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.
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,
and/or 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.
NOTE / Technical Notes
Highlights additional information or detailed procedure.
3-9950-2
Before commissioning the device, make sure the
supply voltage matches the voltage specifications on
the nameplate. For DC power input and Loop current
regulated voltage, use UL60950-1 or UL61010-1 certified
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 certified 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.

3
Signet 9950 Conductivity Transmiter
●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.
CAUTION
Avoid Electrostatic Discharge (ESD).
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.
• 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 . The four binary inputs
only control relay activation and are not considered an
input measurement.
For wiring information, refer to the Relay Wiring section,
page 8.
Switching active loads (usually inductive) can cause
contact arcing sufficient 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.)
CAUTION
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.
3-9950.393-3
Keep relay wiring separate from sensor
and signal wiring to prevent interference
and damage to the 9950 Transmitter.
CAUTION
Int / Ext
Switch EXT
INT
Optional modules and accessories are available for the 9950:
a. Base Unit (required)
b. Slot for Conductivity Resistivity Module
c. Slot for optional Loop Output Module
d. Slot for optional Relay Module
Plug-In Modules
a
.
b
.
c
.
Mfr. Part No. Code Description
3-9950.394-1 159 001 894 Single Channel Direct
Conductivity Resistivity Module
3-9950.398-2 159 001 848 Dual Channel 4 to 20 mA
Current Loop Output Module
Conductivity and Loop Modules
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.
d
.

4Signet 9950 Conductivity Transmitter
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.)
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.)
System Start-up: Step 1
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 first with power disconnected.
Next step: Wiring (Step 2).
panel
V+
FREQ
DATA
GND
V+
FREQ
DATA
GND
Loop1+
Loop1–
Loop2+
Loop2–
PWR+
PWR–
CH2 CH1
USB
RELAYMODULE MODULE 1
MODULE 2
Made in U.S. from U.S. and imported parts
DC POWER
12-32 VDC
0.50A Max
DC Power
12-32 VDC
0.03A Max
Loop Voltage
N
L
100-240 VAC~
50-60 Hz, 24VAMax
Quick-clip
gasket on
front side
of panel
mounting
bracket
Allowable panel thickness 2.36 mm
(0.093 in.) to 33 mm (1.31 in.)
99.06 mm
(3.90 in.)
12 34
99.06 mm
(3.90 in.)
ENTER
90.73 mm
(3.57 in.)
91.44 mm
(3.60 in.)
102.37 mm
(4.03 in.)
82.60 mm
(3.25 in.)
Side View
Front View

5
Signet 9950 Conductivity Transmiter
Wiring
●Minimize handling of 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 properly
grounded piece of metal when handling modules.
CAUTION:
Avoid Electrostatic Discharge (ESD)
Tools Required
●Phillips screwdriver
●Flat-head screwdriver
●Wire strippers
Next step: System Setup (Step 3).
All wiring connections to the 9950 are made via removable terminals.
In general:
●All terminals in this system accept 12 to 28 AWG wire..
●Strip 7 mm (0.28 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.
Wiring Tips:
●Do not route the sensor, DC power, or 4 to 20 mA cables in conduit containing
AC power wiring. Electrical noise may interfere with sensor signal.
●Routing the sensor cable in grounded metal conduit can help prevent electrical noise
and mechanical damage.
●Seal the cable entry points to prevent moisture damage.
●Only one wire should be inserted into a terminal.
●Splice double wires outside the terminal or use appropriate wire ferrule,
not to exceed 2 mm (0.08 in) diameter.
System Start-up: Step 2
Wire the transmitter for all connections with the power off.
Keep any 4 to 20 mA and relay-actuated output devices that are connected
to it offline at this time.
Connect the sensors (refer to your sensor manual).

6Signet 9950 Conductivity Transmitter
The 9950 requires regulated
12 to 32 VDC, ±10% regulated
(24 VDC nominal) or 100-
240 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
Terminal Identification
Prepare the transmitter installation location. If the back of the transmitter is difficult to
access when installed, wire the removable terminal blocks first, then install it completely.
+V
FREQ
DATA
GND
+V
FREQ
DATA
GND
Loop 1+
Loop 1–
Loop 2+
Loop 2–
PWR+
PWR–
CH2 CH1
USB
RELAY MODULE MODULE 1
Made in U.S. from U.S. and imported parts
N
L
100-240 VAC~
11-24 VDC
DC Power Terminals
Current Loop Outputs
- Direct Conductivity Sensor Module
- Dual Channel Current Loop Module
Optional Relay Module
AC Power Terminals
Not Used in this system
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 certified power supply. Power supply shall also be rated for operation at 4000 m altitude.
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
Module 1 and Module 2
• 3-9950.394-1 Single Channel Direct Conductivity/Resistivity Module
• 3-9950.394-2 Dual Channel Direct Conductivity Module
Loop Outputs
• Two Passive 4 to 20 mA current loop outputs 12 - 32 VDC, ±10% regulated (30 mA Max)
USB Interface
• Software updates will be provided through the USB port

7
Signet 9950 Conductivity Transmiter
Sensor Wiring
Optional Current Loop Module Wiring
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.
• Consult sensor manuals for additional wiring information.
• Do not route sensor cables in conduit containing AC power wiring.
Electrical noise may interfere with sensor signal.
• Routing cables in grounded metal conduit will help prevent electrical noise and mechanical damage.
• Seal cable entry points to prevent moisture damage.
• In case of noise interference, ground the sensor SHIELD wire to a local earth ground at a point near the sensor.
Dual Channel
Conductivity Module
ISO GND
TEMP
SIGNAL
SHLD
2819
2820
2821
Sanitary
Tri-clamp
2822
ISO GND
TEMP
SIGNAL
SHLD
2819
2820
2821
Sanitary
Tri-clamp
2822
2839-
2842
2839-
2842
●In case of noise
interference, connect
the cable shield to earth
ground.
●Conductivity sensors
connected to the Direct
Conductivity Modules can
accomodate cable lengths
up to 30 m (100 ft.)
3-9950.398-2
Dual Channel 4-20mA
Loop A +
Loop A -
Loop B +
Loop B -
Power
Supply
–+
PLC or
Recorder
–+
PLC or
Recorder
–+
Loop B+
Loop A–
Loop B–
Loop A+
The Dual Channel 4 to 20 mA
Current Loop Output Module
option is available for single-
channel systems only.
Optional Dual Channel 4 to 20 mA Current Loop Output Module
External DC Power is
required for the current
loops.
Technical Notes:
• Sensor dependent, see sensor
manual for maximum cable length.
• Maintain cable shield through
cable splice.
• Route sensor cable away from
AC power lines.
• Connect the silver (shield) wire to
earth ground in case of EMI noise
interference.
Sensor Terminal Connections
Sensor
Terminal 2850
1+V
2S3L
3GND
4Not Used
Loop
+V
FREQ
+V
FREQ
DATA
GND
Loop
CH2 CH1
+V
FREQ
DATA
GND
DC POWER
2850 Black
White
9950 S
3
L Inputs
X
No connection
Shield

8Signet 9950 Conductivity Transmitter
Relay Module 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) 30 VDC
Minimum Input voltage
(without damage)
-5 VDC
(no operation below 0 VDC)
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 μADC
Minimum current draw
for signal “1” (high) 500 μA
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
• 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.
NO 1
N/C 1
COM 1
NO 2
N/C 2
COM 2
RELAY 1
RELAY 2
RELAY 3
RELAY 4
NO 3
N/C 3
COM 3
NO 4
N/C 4
COM 4
AC or DC
power
Valve
Flow
AC or DC
power
ALARM!
3-9950.393-1
N/O 1
N/C 1
COM 1
SW4
SW COM
N/O 2
N/C 2
COM 2
SW3
SW2
SW1
X
RELAY 1
RELAY 2
BINARY INPUT 3
BINARY INPUT 1
No Connection
BINARY INPUT 2
BINARY INPUT 4
AC or DC
power
ALARM!
Level
LevelSwitch
9950.393 Internal Power
N/O 1
N/C 1
COM 1
SW4
SW COM
N/O 2
N/C 2
COM 2
SW3
SW2
SW1
X
RELAY 1
RELAY 2
BINARY INPUT 3
BINARY INPUT 1
No Connection
BINARY INPUT 2
BINARY INPUT 4
AC or DC
power
ALARM!
Level
LevelSwitch
DC power +
-
9950.393 External Power
3-9950.393-3 Internal Power
3-9950.393-3 External Power
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
power that can be drawn from the module is 6mA at 30 VDC.
INT
EXT
Power
Switch
EXT
INT

9
Signet 9950 Conductivity Transmiter
Power Wiring
+V
FREQ
DATA
GND
+V
FREQ
DATA
GND
PWR+
PWR–
CH2 CH1
DC POWER
DC power optional
Loop1+
Loop1–
Loop2+
Loop2–
Made in U.S. from U.S. and imported par
N
L
100-240 VAC~ 50-60 Hz, 24VA Max
Neutral
Line
100-240 AC
+
–
Black
Red Power Supply
12 to 32VDC
+
–
Red
Black
PLC or Recorder
Loop Input
4 to 20 mA
+
–
PLC or Recorder
Loop Input
4 to 20 mA
Red
Black
3-9950-1 and 3-9950-2
3-9950-2
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.
+V
FREQ
DATA
GND
+V
FREQ
DATA
GND
Loop1+
Loop1–
Loop2+
Loop2–
PWR+
PWR–
CH2 CH1
DC POWER
and imported par
+
–
Black
Red Power Supply
12 to 32 VDC
+
–
Red
Black
PLC or Recorder
Loop Input
4 to 20 mA
+
–
PLC or Recorder
Loop Input
4 to 20 mA
Red
Black
Caution:
Electrical shock hazard exists!
Never connect live AC lines to the instrument.
CAUTION
Keep AC power separate from
sensor and signal wiring to prevent
interference and damage to the
9950 Transmitter.
Caution:
For DC power input and loop current regulated
voltage, use UL60950-1 or UL61010-1 certified
power supply. Power supply shall also be rated
for operation at 4000 m altitude.

10 Signet 9950 Conductivity Transmitter
ENTER
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 key
Access menus
Save changes
All possible segments shown in this illustration. The instrument's software controls which segments are shown at any
particular time.
Operation
ENTER
4
0 0.0 0 99.99
00.00 9 9.9 9
CH1
9999.9
9999.9
9999.9
9999.9
CH2
UOM
UOM
UOM
UOM
Relay 1
Indicator LED
Relay 2
Indicator LED
Backlight Sensor
(do not block)
Bar Graph
Channel 1
display area
Menu Navigation Keys
Relay 3
Indicator LED
Relay 4
Indicator LED
Units of Measure
(GPM, pH, sec, %, etc.)
Numeric
Values
or labels
Bar Graph
Channel 2
display area
Numeric
Values
or labels Units of Measure
(GPM, pH, sec, %, etc.)
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 modified in the Options mode.

11
Signet 9950 Conductivity Transmiter
ENTER
4
DATE FORMAT
100% SOLUTION
NAME
SAVING
24 HOUR
AM/PM
GERMAN
LANGUAGE
LANGUAGE
00:00:040
AM/PM
09:11:04
MM/DD/YYYY
DD/MM/YYYY
YYYY/MM/DD
LANGUAGE
LANGUAGE
02/25/20162
AM/PM
02/25/2016
99.999
99,999
OR
ENTER
saves
changes
ENTER
METRIC
U.S. CUSTOMARY
LOOKING FOR
TEXT 3
SENSOR TYPE
MM/DD/YYYY
YYYY/MM/DD
DD/MM/YYYY
NONE
FLOW
pH
ORP
FACTORY
ENTER
saves
changes
TIME FORMAT
TEXT 3
24 HOUR
SET TIME
TEXT 3
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
3
CHANNEL 1
PRESS ENTER
SETUP
CHANNEL 2
PRESS ENTER
EXIT STARTUP
PRESS ENTER
ENGLISH
DEUTCH
ESPAÑOL
中文
FRANÇ
Easy Set Up can be
entered by setting
either or both channels
to Factory and cycling
power on the 9950.
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.
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 S3L 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.
System Startup: Step 3
Assign the unique operating parameters for your system.
System Setup

Georg Fischer Signet LLC, 3401 Aero Jet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. [phone] • Fax [phone]
For Worldwide Sales and Service, visit our website: www.gfsignet.com • or call (in the U.S.): [phone]
For the most up-to-date information, please refer to our website at www.gfsignet.com
3-9950-1P1.090 Rev 0 09/18 English © Georg Fischer Signet LLC 2018
Ordering Information
Mfr. Part No Code Description
3-9950-1-1 159 001 889 9950 Conductivity Transmitter, DC Power
3-9950-2-1 159 001 890 9950 Conductivity Transmitter, AC Power
3-9950-1-2 159 001 891 9950 Dual Conductivity Transmitter, DC Power
3-9950-2-2 159 001 892 9950 Dual Conductivity Transmitter, AC Power
Optional Modules and Accessories
3-9950.394-1 159 001 846 Single Channel Direct Conductivity/Resistivity Module
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
3-9900.398-2 159 001 848 Dual Channel 4 to 20 mA Current Loop Output Module
9950 Transmitter Base Unit:
Dual Channel, Multi-Parameter, AC Power and DC Power