Honeywell VXP, System Maintenance Manual, Page: 52 / 105

4-8 Honeywell
Maintenance
NOTE:
Consult Chadwick-Helmuth if testing sensors other than those listed in Table 4-8.
4.3.4 Spectrum Test
1. Assemble the test set-up as shown in Figure 4-1 using the appropriate sensors and
cables.
2. Set CAM RATE (RPM) switch to 900.
3. Turn on calibrator (Figure 4-2) and adjust pot next to 900 CAM RATE switch
position until 2
nd
ring from outside on rotor disk appears frozen in place under
60 Hz light.
1
4. Using the Display Unit and Display Program, click on the Measurements Only
button in the Select Procedure menu of the Application Program. Refer to Section
3.2.1 for detailed instructions on manual operation.
5. In the Measurements Only menu, click on the SPECTRUM MEAS ONLY button.
6. Click on the More button beneath the spectrum display window. Note that
the More button toggles between More and Less.
Figure 4-4. Spectrum Test Options
Velocimeter
906-7310
906-8866 19 mV/ips 900 0.4 ±0.06 9:00 ±0:30
Table 4-8. Functional Test Limits for Accelerometers and Velocimeters
using Model 11A Calibrator (Continued)
Sensor Type/
Part No.
Sensitivity RPM
Magnitude
(ips) Phase
(hrs:min)