Spectrum Test; Cables - Honeywell VXP System Maintenance Manual

Maintenance
Table 4-8. Functional Test Limits for Accelerometers and Velocimeters
Sensor Type/
Part No.
Velocimeter
906-7310
906-8866
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
60 Hz light.
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
the More button toggles between More and Less.
4-8 Honeywell
using Model 11A Calibrator (Continued)
Sensitivity
19 mV/ips
nd
ring from outside on rotor disk appears frozen in place under
1
beneath the spectrum display window. Note that
Figure 4-4. Spectrum Test Options
Magnitude
RPM
(ips)
900 0.4 ±0.06
Phase
(hrs:min)
9:00 ±0:30