Copyright © VibroSystM Inc., 2006
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797L Piezoelectric Accelerometer and Cable_Installation - Rev. 1
CABLE INSTALLATION
Preliminary considerations
•
This twisted pair, shielded, yellow teflon cable is 5 m (16 ft.) long
and will run between the piezoelectric accelerometer and the
PCU-100 Unit.
•
In applications of 500 Hz maximum frequency such as the ones
this accelerometer is designed for, the cable capacitance of 30 pF
per foot allows the cable to run over a total length of 100 m (330
ft.). For applications involving a cable longer than 5 m (16 ft.), a
tapping box is needed.
•
The cable should be enclosed in a protective conduit.
Step 1) Installation of the cable
1. Determine the run of the cable, keeping in mind that its maximum length is 100 m (330 ft.).
2. Unroll the protective conduit following the planned course of the cable. Cut the conduit to desired length.
3. With a fish tape, carefully pull the cable into the conduit. The socket connector must be placed on the
accelerometer side.
4. Connect the cable to the accelerometer.
5. Anchor the cable to reduce stress at
the cable terminations. When
securing the cable, leave enough
slack to allow free movement of the
accelerometer as shown in Figure 2.
Figure 2
Step 2) Connection of the power and output cable
1. Connect the wires according to the following designation:
PIN #
WIRE COLOR
DESIGNATION
A
White
Power/signal
Shell
Shield
Ground
B
Black
Common
