Campbell CRS451, User Manual, Page: 22 / 40

CRS451/CRS456 Submersible Water-Level Recording Sensor
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9. Once the configuration is complete, it must be copied to the CRS451 before it
will take effect. Click on
Apply Configuration to CRS45X to start this
process.
Before sending the configuration file to the CRS45X, HydroSci may provide a
warning that your start and stop times may need adjusting. If the Start Time is in
the past, the CRS45X will immediately begin logging data but any offset you may
have applied will not be effective. Also, if the Stop Time is in the past, no data
will be logged.
Save data if you have not already done so. Archived data is purged from the
CRS45X when a new configuration file is copied so you will want to collect any
data before sending the configuration file.
This option allows you to save the configuration file for future reference or for
easy use in other similarly deployed sensors.
The CRS451 is calibrated to pressure units in psi. Table B-1 contains the
conversion factors used to convert psi to depth of water.
7.4 Compensating Measurements for Barometric Pressure
The CRS45X pressure transducer is unvented; therefore it is monitoring sealed
gauge pressure and should be corrected for barometric pressure.