
3500/42 Operation and Maintenance
Maintenance
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Example 2:
Direct Meter Top Scale = 200
µ
m
Transducer Scale Factor = 7,874 mV/mm
= 7.874 mV/
µ
m
Full Scale = (200
×
0.007874)
= 1.5748 Vpp
For Vrms input:
Vrms = (0.707/2)
×
(Vpp), for a sinewave input
= (0.707/2)
×
(1.574)
= 0.5566 Vrms
4. Set the Keyphasor multiplier/divider so that the multiply setting is one and the
divide setting is one. Verify that the Direct bar graph display and Current
Value Box is reading ±1 % of full scale. If the recorder output is configured,
refer to Section 5.1.10 (Verify Recorder Outputs) for steps to verify the
recorder output.
5. If the reading does not meet specifications, check that the input signal is
correct. If the monitor still does not meet specifications or fails any other part
of this test, go to Section 5.1.11 (If a Channel Fails a Verification Test).
6. Disconnect the test equipment and reconnect the PWR, COM, and SIG field
wiring to the channel terminals on the I/O module. Verify that the OK LED
comes on and the OK relay energizes. Press the RESET switch on the Rack
Interface Module (RIM) to reset the OK LED.
7. Repeat steps 1 through 6 for all configured channels.
Gap
1. Disconnect PWR, COM, and SIG field wiring from the channel terminals on
the I/O module.
2. Connect test equipment and run software as described in Section 5.1.5.1
(Test Equipment and Software Setup - Radial Vibration).
3. If Gap is configured to read in volts, adjust the power supply to produce a
voltage equal to -18.00 Vdc on the Gap bar graph display. Verify that the
Gap bar graph display and Current Value Box is reading ±1 % of -18.00 Vdc.
If the recorder output is configured, Refer to Section 5.1.10 (Verify Recorder
Outputs) for steps to verify recorder output.
4. Adjust the power supply to produce a voltage equal to mid-scale on the Gap
bar graph display. Verify that the Gap bar graph display and Current Value
Box is reading ±1 % of the mid-scale value. If the recorder output is
configured, refer to Section 5.1.10 (Verify Recorder Outputs) for steps to
verify the recorder output. Go to step 8.
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