Drawing Number: 21113
Revision: NR
OPERATION MANUAL FOR
ICP
HIGH PRESSURE SENSORS
Models 109A, A02, A11, A12
Models 109B11, B12
5
5.0
OPERATION
Select desired mode of circuit connection and turn
power unit on.
Observe fault monitor meter at the front panel of the
power unit.
Normal operation is indicated by an approximate
midscale reading.
Shorted cable or connections are indicated by a zero
reading (red area).
Open cable or connections are indicated by a full-
scale (yellow area) reading.
Allow instrument several minutes to warm up and
thermally stabilize.
When output from power unit is connected to readout
equipment, a drifting of the voltage signal will be
noticed. This is normal. It is due to the charging of
the coupling capacitor in the power unit and will
cease within several minutes.
6.0
POLARITY
The series 109A produces a positive-going output
voltage for increasing pressure at the diaphragm.
7.0
MAINTENANCE
The small size and sealed construction of the series
109A precludes field maintenance and repair.
ICP is a registered trademark of PCB Piezotronics
