ICP
FORCE SENSOR OPERATION MANUAL
10
10.0 TROUBLESHOOTING
When a PCB signal conditioner with any of the following
indicators are used, turn the power on and observe the voltmeter
(or LED’s) on the front panel.
NORMAL OPERATION
Output voltage moves from YELLOW to GREEN slowly until
charging is complete. AC coupled signal conditioners require
sufficient time to charge the internal coupling capacitor. Allow
signal conditioner to charge for five (5) discharge time
constants for stable operation. In most cases, this is just a few
seconds.
Note: Most PCB force sensors have an output bias of 8-14
VDC. Refer to the specification sheet in this manual for the
bias range of the model you are using. If you are using a low
bias sensor, the indicator will be at the bottom end of the green
portion of the dial indicator, and may even be in the red portion.
This is the expected range and indicates proper operation.
11.0 MAINTENANCE
The sensor connector must be kept clean, especially if it is
operating in a dusty and/or wet environment. Because the force
sensor is of welded construction, it should be returned to the
factory for servicing in the event of serious malfunction.
Observe the following precautions in using the sensor:
A.
Do not exceed the maximum load levels for the force
sensor (see specification sheet).
B.
Do not subject the sensor to temperatures exceeding that
of the specification, normally 250°F (121°C).
C.
Do not apply voltage to the sensor without current-
limiting diodes or other current protection.
D.
Do not apply more than 20 mA of current to the force
sensor.
E.
When mounting the force sensor, observe installation
procedures detailed in Section 3.0 and as outlined on the
specific sensor Installation Drawing to avoid over-
torquing when mounting.
F.
Do not apply more than 30 volts to the sensor.
G.
Avoid metal-to-metal impacts
during applications as this
application produces high-frequency energy and ringing
within the sensor which could damage the internal
crystal(s) or ICP amplifier. Electrical low-pass filtering
or a mechanical damping material can help reduce such
effects.
H.
Do not spin the sensor onto the cable
. This may fatigue
the cable center pin, causing cable damage. Always
insert the cable pin into the sensor and tighten the
knurled cable nut to the sensor.
ICP
is a registered trademark of PCB Piezotronics
MANUAL NUMBER: 18218
MANUAL REVISION:
H
ECN NUMBER:
51551
