OPERATION MANUAL FOR
ENGINE COMBUSTION SENSORS
Modes 112B10 & 112B11
Model 175A01
2
Manual Number: 21069
Manual Revision: A
ECR Number: 22421
4.0 CALIBRATION
Charge mode sensors are usually calibrated by static
or comparison methods according to NIST methods.
The comparison method involves reference standards
and the application of quasi-static step function or
repetitive inputs. For highest accuracy, use the
calibration certificate supplied or calibrate the sensor
over the range of anticipated use. Factory calibration
service is available at a nominal charge.
4.1 POLARITY
Standard models have a negative output for use with
inverting-type charge amplifiers. Special positive-
output sensors are available for use with source-
follower amplifiers. The signal polarity can be
reversed in most systems at the readout input to allow
interchangeability of both designs.
5.0
SERVICING THE SENSOR
Keep the sensor clean at all times. In dirty
environments, the cable connector can be protected
with heat shrink tubing.