GF Signet 9950 User manual

*3-9950.090*
Signet 9950 Dual Channel Transmitter
3-9950.090 Rev. C 05/17
3-9950-1, -2
Operating Instructions (see pg. 10)
Description
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
2850 Conductivity/Resistivity Sensor
Electronics (sold separately).
English
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, Dissolved Oxygen, and devices that transmit a
4 to 20 mA signal with the use of the 8058 iGo®Signal Converter.
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.
The 9950 supports the following relay modules:
• Four Channel Mechanical Relay Module
• Two Mechanical and Two Solid State Relay Module
• Two Mechanical Relays and Four Binary Inputs Module
Sensor
Model
Freq
Output
Digital (S3L)
Output
Requires
8058
515/8510 X
525 X
2000 X
2100 X
2250 X
2350 X
2450 X
2507 X
2536/8512 X
2537-5 X
2540 X
2551 XX
2552 XX
U1000 XX
U3000 XX
U4000 XX
2260 X
2270 X
2290 X
2291 X
2610-41 X
2724-2726 X
2734-2736 X
2750/2751 X
2756-2757 X
2764-2767 X
2774-2777 X
2819-2823 X
2839-2842 X
2850 X
• English
• Deutsch
• Español
• 中文
NOTE:
Prior to installation, Check
www.gfsignet.com for
software updates to your
device. See page 48, Field
Software Update, for more
information.

29950 Transmitter
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 Signet products.
NOTE / Technical Notes
Highlights additional information or detailed procedure
• 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 specified 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 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.
Safety Information
Start-Up Guide
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.)
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 ___________________
Installation
Panel Mount Installation
panel
V+
FREQ
DATA
GND
V+
FREQ
DATA
GND
Loop1+
Loop1–
Loop2+
Loop2–
PWR+
PWR–
CH2 CH1
USB
RELAY MODULE 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.)
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
9950 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
Start-Up Guide
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
MODULE 2
Made in U.S. from U.S. and imported parts
N
L
100-240 VAC~
11-24 VDC
DC Power Terminals
Current Loop Outputs
Channel 1 Input
(Frequency/S3L)
AC Power Terminals
Channel 2 Input
(Frequency/S3L)
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
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 flow sensor)
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

49950 Transmitter
Sensor Wiring
Start-Up Guide
Loop
+V
FREQ
+V
FREQ
DATA
GND
Loop
CH2 CH1
+V
FREQ
DATA
GND
DC POWER
Loop
+V
FREQ
+V
FREQ
DATA
GND
Loop
CH2 CH1
+V
FREQ
DATA
GND
DC POWER
Loop
+V
FREQ
+V
FREQ
DATA
GND
Loop
CH2 CH1
+V
FREQ
DATA
GND
DC POWER
FLOW
FLOW
515/8510
525 2536/8512 2540
2000 2100 2507
Black
Red
Silver
9950 Frequency
X
No connection
Black
Red
White
2537-5
S1 S2
Blk Red Shld -+
9950 S3L Inputs
X
No connection
* 2551-XX-21, -41
Display Magmeter
2250 2350 2450
2551* 2750/2751 2850 Black
Red
White
9950 S3L Inputs
X
No connection
Shield
Blue
Green
Brown No
connection
9950 S3L Inputs
+V
FREQ
DATA
GND
+V
FREQ
DATA
GND
Loop1+
Loop1–
Loop2+
Loop2–
PWR+
PWR–
CH2 CH1
DC POWER
+V
FREQ
DATA
GND
Black
White
Shield
PWR +
PWR –
3-2610-41
+
–Power Supply
12 to 32 VDC
Technical Notes:
• Wiring terminals on the 2537 are rated for 16 to 22
AWG wires.
• 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 connects to the 9950 via the
Digital (S3L) output.
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.
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.
NOTE: The 2850 has no SHIELD wire.
Technical Notes:
The wiring of the 3-2610-41 is non-standard:
• RED is 12 to 24 VDC
• WHITE is Data
• BLACK is VDC Ground (PWR -)
• A jumper MUST be installed between PWR- and
S3L GND.
• Use of the 3-2610-31 requires iGo Converter, refer to
the 2610 Dissolved Oxygen sensor manual.
NOTE: 3-2610-41 only.

5
9950 Transmitter
2551-XX-11
Blind Magmeter
Black
Red
9950 S3L Inputs
+V
FREQ
DATA
GND
+V
FREQ
DATA
GND
Loop1+
Loop1–
Loop2+
Loop2–
PWR+
PWR–
CH2 CH1
DC POWER
+V
FREQ
DATA
GND
X
No connection
White
Shield
Black
Red
White
9950 Frequency
+V
FREQ
DATA
GND
+V
FREQ
DATA
GND
Loop1+
Loop1–
Loop2+
Loop2–
PWR+
PWR–
CH2 CH1
DC POWER
+V
FREQ
DATA
GND
X
No connection
Shield
3
4
Frequency
S L
3
3
4
Input Wiring for 2551 and 2552 sensors
• Either Frequency or Digital (S3L) may be used.
• Signet recommends configuring these sensors with the Digital (S3L) output to
display reverse flow (negative numbers).
• Input type is selected by choosing between “SENSOR FREQ” and "SENSOR S3L" in
the FLOW sensor type INPUT menu (see page 29).
Frequency Output Technical
Notes (2551 & 2552):
• The frequency output will
be displayed as positive
flow regardless of the
flow 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.
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.
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 (S3L)
signal (recommended).
Sensor Wiring
Start-Up Guide
Only in case of EMI interference.
See Frequency Output Technical Notes (2551 & 2552) at right.
2552
Black
Brown
White
9950 S3L Inputs
+V
FREQ
DATA
GND
+V
FREQ
DATA
GND
Loop1+
Loop1–
Loop2+
Loop2–
PWR+
PWR–
CH2 CH1
DC POWER
+V
FREQ
DATA
GND
Black
Brown
White
9950 Frequency
+V
FREQ
DATA
GND
+V
FREQ
DATA
GND
Loop1+
Loop1–
Loop2+
Loop2–
PWR+
PWR–
CH2 CH1
DC POWER
X
No
connection
+V
FREQ
DATA
GND
Blue
Blue
X
No connection
Shield Shield

69950 Transmitter
Power Wiring
Start-Up Guide
+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.
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.
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.

7
9950 Transmitter
Start-Up Guide
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 ADC
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
• 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

89950 Transmitter
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.
Operation
Start-Up Guide
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.

9
9950 Transmitter
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 modified in the Options mode.
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
Operation
ENTER
4
0 0.0 0 9 9.9 9
0 0.0 0 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.)

10 9950 Transmitter
Operating Instructions
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).
Warranty Information Table of Contents
Product Registration
General Information .........................................................2
Safety Information/Installation..........................................2
Terminal Identification ......................................................3
Wiring ...............................................................................4
Sensor Wiring.............................................................4
Sensor Wiring.............................................................5
Power Wiring..............................................................6
Relay Module Wiring..................................................7
Operation .........................................................................8
Password ...................................................................9
Keypad Operation ......................................................9
Signal Type: 4 to 20 mA...........................................10
Warranty Information................................................10
Product Registration ................................................10
Table of Contents .....................................................10
Dimensions ..............................................................11
Module Installation ................................................... 11
Plug-In Modules .............................................................12
Relay Modules ...............................................................12
Signal Type: Frequency ................................................13
Signal Type: Digital (S3L) ..............................................13
Signal Type: 4 to 20 mA................................................14
Relay Functions .............................................................14
Relay Modes ............................................................15
Derived Functions ....................................................19
Menu System .................................................................20
Common Menu ........................................................21
Loop Menus .............................................................21
Relay Menu ..............................................................22
Option Menu.............................................................24
View Mode ...............................................................26
Sensor-Specific Menus..................................................28
Flow..........................................................................28
pH.............................................................................30
ORP..........................................................................32
Conductivity/Resistivity ............................................34
Pressure...................................................................36
Level/Volume............................................................38
Temperature .............................................................41
4 to 20 mA................................................................42
Salinity......................................................................44
Dissolved Oxygen ....................................................46
Field Software Update ...................................................48
Updating the 9950..........................................................48
Troubleshooting .............................................................49
Appendix ........................................................................51
Averaging .................................................................51
LOG Current Loop Output .......................................51
Custom Measurements............................................52
Calibration Procedures - pH.....................................56
Calibration Procedure - ORP ...................................58
Calibration Procedure - Conductivity/Resistivity......60
Calibration Procedure - Flow ...................................61
Calibration Error Messages .....................................62
USP Limits................................................................63
Maintenance.............................................................63
Map of 9950 Relay and Loop Sources ....................64
Specifications .................................................................65
Ordering Information ......................................................68

11
9950 Transmitter
3-9950-1/-2
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.
To install modules:
Remove power from the 9950. Carefully align pins and
connectors (do not bend connecting pins) and push
module firmly into place, then attach with screw(s)
CAUTION
Exercise care when installing modules.
Do not bend connecting pins.
To remove 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.
WARNING
Relays may be connected to external
high-voltage power sources or multiple power
sources creating an electrocution hazard.
Dimensions Module Installation
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
CAUTION
Avoid Electrostatic Discharge (ESD).

12 9950 Transmitter
•
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).
Optional modules and accessories are available for the 9950:
a. Base Unit (required)
b. Slot for optional Relay Module
c. Slot for optional Module 1
d. Slot for optional Module 2
Each item is ordered separately. Modules are field-replaceable at any time.
See Module Installation (pg. 11) and Ordering Information (pg. 68) sections for more details.
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.
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
. 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 7.
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 Keep relay wiring
separate from sensor
and signal wiring to
prevent interference
and damage to the
9950 Transmitter.
CAUTION
Plug-In Modules
Relay Modules
a
.
b
.
c
.
d.
d
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
Int / Ext
Switch EXT
INT

13
9950 Transmitter
Signet flow sensors 515/8510, 525, 2000, 2100, 2507, 2536/8512 and 2540 provide a
frequency output. (Flow sensors 2537, 2551 and 2552 can be configured with either
Digital (S3L) or Frequency outputs).
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.
• 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
Maximum
Cable Length
60 m
(200 ft)
305 m
(1000 ft)
515/8510 X
525 X
2000 X
2100 X
2507 X
2536/8512 X
2537 X
2540 X
2551 X
2552 X
Signal Type: Frequency
• The input terminals on the 9950 carry Digital (S
3
L) 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 (S3L) bus varies depending on the types
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.
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: Digital (S3L)

14 9950 Transmitter
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
Set your relay functions to your own application requirements.
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 confirm.
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.
Relay function can be tested in the RELAY menu.
Once a setting is saved it becomes immediately active.
Relay Functions
When connecting a non-Signet sensor to the 9950, the sensor’s 4 to 20 mA signal must be
converted to Digital (S3L). The 8058 i-Go Signal Converter accepts any 4 to 20 mA signal
and converts it into Digital (S3L).
1. Wire the 8058 between the 4 to 20 mA loop source and the 9950 Digital (S3L) input
terminals.
2. In the 9950 INPUT menu, sensor TYPE screen, select the '4 to 20 INPUT' sensor
(see System Setup Menu discussion, page 8).
8058-1
Input
4-to-20 mA
Output
S3L
Signet 8058 i-Go™
4-20 mA to S3L Converter
+GF+
4-20 mA input S3L Output
Black
Red
Shield
9950 S3L Inputs
+V
FREQ
DATA
GND
+V
FREQ
DATA
GND
Loop1+
Loop1–
Loop2+
Loop2–
PWR+
PWR–
CH2 CH1
DC POWER
+V
FREQ
DATA
GND
X
No connection
White
8058-1
Signal Type: 4 to 20 mA

15
9950 Transmitter
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.
Hysteresis
Time
Low Setpoint
Process
Low Setpoint + Hysteresis
Hysteresis
Time
High Setpoint
Process
High Setpoint - Hysteresis
The 9950 relays are selectable and configurable and can be
used as switches that respond when the process value moves
above or below a user-defined 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.
Relay energized
Relay de-energized
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.
Hysteresis
Time
High Setpoint
Process
Relay energized
Relay de-energized
Cycle Time
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
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.
Relay Modes
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 identification.

16 9950 Transmitter
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.
Proportional Pulse Operation:
The transmitter can output a pulse at the rate defined 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
selectable in the RELAY menus.
NOTE: Relay LEDs will flash in PULSE mode.
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.
Time
High Limit Hysteresis
Low Limit
Process
Window
Window OUT example
10
5
Relay Output Rate:
0 to 100 Pulses/min.
Pulse rate
0 pulses
100 pulses
7.5
Starting point Endpoint
100 pulses
Relay energized
Relay de-energized
Time
High Limit Hysteresis
Low Limit
Process
Window
Hysteresis
Window IN example
Relay Modes

17
9950 Transmitter
• Volumetric Pulse
The relay will activate for the set pulse width once the specific
volume of fluid is registered. Flow Inputs only.
NOTE: Relay LEDs will turn on when the relay is active
• Totalizer Volume
Relay activates and latches when a specified volume of fluid 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 filter change.
• 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 flash in PWM mode.
0%
20%
40%
60%
80%
100%
Process value
PWM
Maximum
Range
Relay is
always ON
Relay is
alwa
y
s OFF
Relay Pulse Width
(as a % of Relay period)
PWM
Minimum
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.
Relay Modes
Note
• The pulse width will be 100% of the relay period
(relay always ON) when the process value is
greater than the maximum range.

18 9950 Transmitter
(A l B l C) means
"Activate this relay when
any condition (A, B, or C)
is true."
(A & B & C) means
"Activate this relay only
when all conditions (A, B,
and C) are true."
(A l (B & C) ) means
"Activate this relay if A is
true OR if B AND C are
both true."
(A & (B l C) ) means
"Activate this relay only if A
is true AND either B or C are
also true."
Boolean Relay Logic Operations
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
satisfied.
• 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.
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.
• 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 specified time is reached, at which time the relay
is closed, triggering the relay for a specified duration. The “Hold
while” feature allows the user to hold the measurement from a
channel input 1, 2, or both, or none for a specified recovery time.
The 9950 will deactivate held relays and hold the 4 to 20 mA at
previous value.
• 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 specific 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.
Relay Period Mode
Activation
Duration Activation
Duration Activation
Duration
Recovery
Time Recovery
Time
Hold measurement
during activation
and recovery
Hold measurement
during activation
and recovery
^
Time
...
^
Period 1 Period 2
Relay Weekday Mode
Sunday, Tuesday and Thursday activation
Activation
Duration Activation
Duration Activation
Duration
Recovery
Time Recovery
Time
Hold measurement
during activation
and recovery
Hold measurement
during activation
and recovery
^
Time
...
^
Sun
Period 2
Mon Tue Wed Thu Fri
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 1
FLO(A | B | C)NITS
MODE
RELAY 1
A & B & C
MODE
RELAY 1
MODE
A | (B & C)
RELAY 1
MODE
A & (B | C)
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.

19
9950 Transmitter
• % Recovery is a derived function based on flow rate, in a
reverse osmosis system.
• To measure % Recovery, the 9950 must have two flow
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 configuration.
• Both flow sensors must use the same time base and units
of measure.
When two of the same type of measurement are present, the 9950 can calculate several derived functions from like pairs of
measurements.
Up to four derived Functions can be defined and used as the source for display and output functions.
• Flow, Temperature, Pressure, Conductivity and Level channels 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 identification
• % Passage and % Reject are derived functions based on
conductivity measurements only, specifically 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.
% Recovery
% Passage and % Reject
% Passage: (Permeate ÷ Feed) x 100
% Reject: [1 - (Permeate ÷ Feed)] x 100
RO Membrane
RO Membrane
RO Membrane
Feed
Concentrate
Permeate
RO Membrane
RO Membrane
RO Membrane
Feed
Concentrate
Permeate
% Recovery A: (Permeate ÷ Feed) x 100
In the Setup menu, select the option that states % Recovery A,
FEED: PERMEATE
% 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
RO Membrane
RO Membrane
RO Membrane
Feed
Concentrate
Permeate
Feed Concentrate
RO Membrane
RO Membrane
RO Membrane
Permeate
Derived Functions

20 9950 Transmitter
MENU Mode Overview
The MENU mode enables the user to view and configure all menu items.
The five menus available are: CAL, INPUT, LOOP, RELAY, and OPTION.
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 24).
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.
Error Handling
Errors occurring while on the
measurement screens show a
specific message (e.g., Wrong
Sensor). This message will
flash and stays on for 3 seconds
and flash off. Once the error is
resolved or cleared, the error
message stops.
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 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 modified 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.
In the MENU mode, if the
wrong code or password is
entered, an ERROR message
is displayed.
To change your CODE, go
to OPTIONS mode, enter
your desired code and press
ENTER. (The STD password
cannot be changed.)
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 field
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.
LANGUAGE
LANGUAGE
ENTER CODE
LANGUAGE
0000
0
WRONG CODE
PASSWORD TYPE
TEXT 3
PASSWORD
TEXT 3
SAVING
00.00 15.00
00.00 00.00
CH1 _ _ _ _._
9999.9
CH2
mV
GPMS
pH
°F
6 2.8
7.0
WRONG SENSOR
00.00 15.00
00.00 00.00
CH1 _ _ _ _._
9999.9
CH2
mV
GPMS
pH
°F
7.0
6 2.8
MISSING SENSOR
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