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 Signet 8450-1 Pressure Transmitter

Signet Pressure

Transmitter

Pressure Cal:

0.0    psi >

ENTER

Hysteresis

Time

Low Setpoint

Process

Output energized

Output relaxed

Hysteresis

Time

High Setpoint

Process

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.

3.3 Open 

Collector 

Output

The Open Collector 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 variable is greater than the 
setpoint.  The output will relax when the process variable moves 
below the setpoint plus the hysteresis value.

• 

Off

The outputs may be disabled if not being used.

Monitor the pressure input from the sensor.
This is the permanent display. 

 

 

 

Monitor the 4-20 mA Loop  output.  
 

 

 

 

Monitor date for scheduled maintenance or date of last calibration.

View Menu

Display

Description

 Pressure: 
 60 

psi 

 

 Loop Output: 
 12.00 

mA 

 Last 

Cal 

 06-30-03 

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

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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