Maintenance
3500/42 Operation and Maintenance
182
5.1.10 Verify Recorder Outputs
The following test equipment and procedure should be used in the verification of
the recorder outputs. Recorder outputs for the 3500/42 Proximitor/Seismic
Monitor Module are 4 to 20 mA.
1. Disconnect the COM and REC field wiring from the channel terminals on the
I/O module.
2. Connect a multimeter to the COM and REC outputs of the I/O module. The
multimeter should have the capability to measure 4 to 20 mA.
3
If the proportional value is not Gap:
Set the proportional value that the recorder is configured for to full-scale
(Refer to the proportional value of the channel pair type you are testing in the
Verify Channel Values portion of this manual). Verify that the recorder output
is reading 20 mA ±1 %. Go to step 4.
If the proportional value is Gap:
Set the Gap proportional value to -18.00 Vdc (Refer to the proportional value
of the channel pair type you are testing in the Verify Channel Values portion
of this manual). Verify that the recorder output is reading 16 mA ±1 %.
4. Set the proportional value that the recorder is configured for to mid-scale.
Verify that the recorder output is reading 12 mA ±1 %.
Connect test
equipment
here.
Proximitor/
Seismic I/O
Module
(Internal
Termination)
Recorder External
Termination Block
(Euro Style
Connectors)
Recorder External
Termination Block
(Terminal Strip
Connectors)
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