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 Signet 8450-1 Pressure Transmitter

Pressure Units: 

 

 psi  > 
 

 

Set:  

 Pressure  > 
 

 

Loop 1 Range: psi 

 

 0.0 

→ 

100.0  >

Output1 Mode 

 

 Low  > 
 

 

Output1 Setpnt: 

 

 10.0 

psi  > 

 

 

Output1 Hys: 

 

 5  >

Last Cal   

 06-30-03  >

Select Pressure units for both input channels:  psi, bar or kPa. 

 

 

 

 

 

Provides a maximum 5 psi offset to match 8450 to external reference.
Enter “-999” to restore the original Factory calibration value.
Changes to this setting will become effective when the display exits the Calibrate menu. 
 

Check the 2450 Sensor instructions for the range capability of your sensor.
Be sure to modify this setting if you change the Pressure Units.
 

 

Select the  mode of operation for the Open Collector output:
OFF, LOW or HIGH. 

 

 

 

 

 

The Open Collector Output will be activated when the pressure reaches this value.  Be 
sure to modify this setting if you change the Pressure Units.

The Open Collector Output will be deactivated at setpoint ± Hysteresis (depending on 
High or Low selection).

Use this “note pad” to record important dates, such as annual recertifi cation or 
scheduled maintenance. 

Calibrate Menu

Display

(Factory settings shown)

Description

Summary of Contents for 8450-1

Page 1: ...VIEW 92 mm 3 6 in 97 mm 3 8 in 56 mm 2 2 in 41 mm 1 6 in Optional Rear Cover Field Mount Panel Mount FRONT VIEW 96 mm 3 8 in 96 mm 3 8 in 96 mm 3 8 in quick clips gasket panel terminals mounting bracket latch Output Output System Pwr Loo p System Pwr Loo p 2 1 4 3 Sen sr Gnd SHIELD Sen sr IN RED Sen sr V BLACK 7 6 5 SIDE VIEW Field Mount Panel Mount Panel Mount Installation Detail 107 mm 4 2 in 42...

Page 2: ...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 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 connecti...

Page 3: ...Power Supply 12 24 VDC PLC or Recorder Channel 1 4 20 mA in Channel 2 4 20 mA in Transmitter 1 Terminals System Pwr Loop System Pwr Loop Transmitter 2 Terminals PLC Terminals Loop Input 4 20 mA Transmitter Terminals Power Supply 12 24 VDC Power Supply 12 24 VDC System Pwr Loop System Pwr Loop 4 3 2 1 System Pwr Loop System Pwr Loop 4 3 2 1 System Pwr Loop System Pwr Loop 4 3 2 1 4 3 2 1 3 2 System...

Page 4: ...r output can be used as a switch that responds when the process value moves above or below a setpoint or it can be used to generate a pulsing signal with a rate proportional to the process value Low Output triggers when process variable is less than the setpoint The output will relax when the process variable moves above the setpoint plus the hysteresis value High Output triggers when process vari...

Page 5: ...cedure 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 fla...

Page 6: ...alibrate menu Check the 2450 Sensor instructions for the range capability of your sensor Be sure to modify this setting if you change the Pressure Units Select the mode of operation for the Open Collector output OFF LOW or HIGH The Open Collector Output will be activated when the pressure reaches this value Be sure to modify this setting if you change the Pressure Units The Open Collector Output w...

Page 7: ...ms where the measurement is very stable Select LOW or HIGH averaging if your process experiences frequent or extreme fluctuations in pressure Active HIGH This setting is used to turn a device pump valve ON at the setpoint Active LOW This setting is used to turn a device OFF at the setpoint Adjust the minimum and maximum current output The display value represents the precise current output Adjustme...

Page 8: ...e El Monte CA 91731 2882 U S A Tel 626 571 2770 Fax 626 573 2057 For Worldwide Sales and Service visit our website www gfsignet com Or call in the U S 800 854 4090 3 8450 090 1 Rev H 3 06 English George Fischer Signet Inc 2001 Printed in U S A on recycled paper Ordering Information Mfr Part No Code Description 3 8450 1 159 000 041 Presure transmitter Field mount 3 8450 1P 159 000 042 Presure trans...

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