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Signet 8450-2 Pressure Transmitter

CAUTION!

•    Remove power to unit before wiring input 

and output connections.

•    Follow instructions carefully to avoid 

personal injury.

Contents

1. Installation
2. Speci

fi

 cations

3. Electrical Connections
4. Menu Functions

Output -

System Pwr
Loop -

System Pwr
Loop +

2

1

4

3

Sensr Gnd

(SHIELD)

Sensr IN

(RED)

Sensr V+

(BLACK)

7

6

5

   8052

92 mm
(3.6 in.)

97 mm

(3.8 in.)

56 mm 
(2.2 in.)

41 mm 
(1.6 in.

)

Optional
Rear
Cover

SIDE VIEW
Field Mount

96 mm

(3.8 in.)

96 mm
(3.8 in.)

96 mm

(3.8 in.)

quick-clips

gasket

panel

terminals

mounting

bracket

latch

Panel Mount

SIDE VIEW

FRONT VIEW

Field Mount &

Panel Mount

Panel Mount
Installation Detail

107 mm (4.2 in.)

42 mm 

(1.7 in.)

65 mm 

(2.5 in.)

1. Installation

ProcessPro transmitters are available in two styles: panel mount and 

fi

 eld mount. The panel mount is supplied with the necessary 

hardware to install the transmitter. This manual includes complete panel mounting instructions.
Field mounting requires one of two separate mounting kits. The 3-8052 integral kit joins the sensor and instrument together into a single 
package. The 3-8050 Universal kit enables the transmitter to be installed virtually anywhere.
Detailed instructions for integral mounting or other 

fi

 eld installation options are included with the 3-8052 Integral kit or the 3-8050 

Universal kit.

1.1 Panel 

Installation

1.  The panel mount transmitter is designed for installation using a 1/4 DIN Punch.  For manual panel cutout, an adhesive template is 

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

3-8450.090-2  Rev. J  11/11 

English

*3-8450.090-2*

English

Signet Pressure

Transmitter

Pressure Cal:

0.0    psi >

Relay 1

Relay 2

ENTER

China RoHS (Go to www.gfsignet.com for details)

2. Specifi cations

General

Compatibility: Signet 2450 Pressure Sensor
Accuracy:  ±1% of full scale
Repeatability:  ±0.5% of full scale
Enclosure:
• Case: 

PBT

•  Panel case gasket:  Neoprene
•  Window: 

Polyurethane coated polycarbonate

•  Keypad: 

Sealed 4-key silicone rubber

•  Weight: 

Approx. 325 g (12 oz.)

Display:
•  Alphanumeric 

2 x 16 LCD

•  Update rate: 

1 second

•  Contrast: 

User selected, 5 levels

Electrical

Sensor Input:
•  Range: 

0-250 psig, 0-17 bar, 0-1700 kPa

Current output:
•  4 to 20 mA, isolated, fully adjustable and reversible
•  Power: 12 to 24 VDC ±10%, regulated, 21 mA max current
•  Max loop impedance: 

  50 

Ω

 max. @ 12 V

 

   

325 

Ω

 max. @ 18 V

 

   

600 

Ω

 max. @ 24 V

•  Update rate:   

100 ms

• Accuracy:   

±0.03 

mA

Relay outputs (2 sets mechanical SPDT contacts):
•  Maximum voltage rating:  5 A @ 30 VDC, or 5 A @ 250 VAC
 resistive 

load

•  Hi or Lo programmable with adjustable hysteresis
•  Pulse programmable (maximum 400 pulses/minute)
• Hysteresis:   

User 

adjustable

Environmental

•  Operating temperature:  -10 to 70 °C (14 to 158 °F) 
•  Storage temperature: 

-15 to 80 °C (5 to 176 °F)

•  Relative humidity: 

0 to 95%, non-condensing

•  Maximum altitude: 

2000 m (6562 ft)

• Insulation 

category: 

II

•  Rating: 

NEMA 4X/IP65 front

Standards and Approvals

•  CE, UL listed
• Immunity:  EN50082-2
•  Emissions: 

EN55011 Class B

•  Manufactured under ISO 9001 for Quality and

ISO 14001 for Environmental Management

Summary of Contents for 8450-2

Page 1: ...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 To remove secure instrument temporarily with tape from front or grip from rear of instrument DO NOT RELEASE Press quick clips outward and remove 3 8450 090 2 Rev J 11 11 English 3 8450 090 2 English Signet Pressure Transmitter Pres...

Page 2: ...chanical 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 cable length from the sensor to the transmitter must not exceed 400 ft 122 m For best performance ground the sensor SHIELD wire to a local earth ground at a point near the sensor Experiment with connecting the sensor shield wire to differe...

Page 3: ...System Pwr Loop AUX Power AUX Power Loop Input 4 to 20 mA System Pwr Loop System Pwr Loop AUX Power AUX Power System Pwr Loop System Pwr Loop AUX Power AUX Power Example Two transmitters connected to PLC Recorder with separate power supply PLC or Recorder Transmitter 1 Terminals Transmitter 2 Terminals Power Supply 12 to 24 VDC Connection to a PLC with built in power supply Internal PLC Connection...

Page 4: ...utput The relay output can be used as a switch that responds when the process value moves above or below a setpoint Low Output energizes when process variable is less than the setpoint The output will be de energized when the process variable moves above the setpoint plus the hysteresis value High Output energizes when process variable is greater than the setpoint The output will be de energized w...

Page 5: ...edure Step 1 Press and hold ENTER key 2 seconds to select the CALIBRATE menu 5 seconds to select the OPTIONS menu Step 2 The Key Code is UP UP UP DOWN keys in sequence After entering the Key Code the display will show the first item in the selected menu Step 3 Scroll menu with UP or DOWN arrow keys Step 4 Press RIGHT ARROW key to select menu item to be edited The first display element will begin f...

Page 6: ...y of your sensor Be sure to modify this setting if you change the Pressure Units Relay 1 Mode Low Select the desired mode of operation for the relay 1 output Options available are High or Low The signal may be disabled Off if not used Relay 1 Setpnt 10 0 psi In Low or High Mode the relay output 1 will be activated when the pressure reaches this value Be sure to modify this setting if you change th...

Page 7: ...se to changes in pressure Longer averaging period produces more stable display and output response Loop Adjust 4 00 mA Adjust the minimum and maximum current output Use this setting to match the system output to any external device The display value represents the precise current output Adjustment limits 3 80 mA 4 00 mA 5 00 mA 19 00 mA 20 00 mA 21 00 mA Loop Adjust 20 00 mA Test Loop Press UP or ...

Page 8: ...641 Heavy duty wall mount bracket 3 5000 598 198 840 225 Surface Mount Bracket 3 9000 392 159 000 368 Liquid tight connector kit for rear cover includes 3 connectors 3 9000 392 1 159 000 839 Liquid tight connector kit NPT 1 piece 3 9000 392 2 159 000 841 Liquid tight connector kit PG13 5 1 piece Display Condition Possible Causes Suggested Solutions Check Sensor Sensor not wired properly Sensor con...

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