Campbell CRS451, Instruction Manual

Page: 33 / 38

Appendix A. Calibration Certificate
Each CRS451/CRS456 has been calibrated to meet printed accuracy
specification at multiple temperature and pressure ranges. If additional
verification is required, a Calibration Certificate can be purchased for each
CRS451/CRS456 Water-Level Recording Sensor.
The Instrument Data Report provides a list of the pressure and temperature at
which the sensor was tested.
Pressure [kPa] is the pressure applied (listed in kilopascals) to the sensor.
Temperature [°C] is the temperature inside the test chamber at the time of
testing. Pressure After [kPa] represents the resulting measurement output by
the CRS451/CRS456 at the given pressure and temperature. Finally,
Deviation After [%F.S.] provides the difference between the actual pressure
applied to the sensor and the pressure measurement output by the sensor. This
value is listed as a percentage of the full scale range of the sensor.
When a CRS451/CRS456 is returned to Campbell Scientific for calibration, the
sensor will be returned with an Instrument Data Report. This report will
include values in the Pressure Before [kPa] column. These values represent
the measured pressure the sensor returns at the specified pressure and
temperature, BEFORE calibration.
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