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CRS451/CRS456 Submersible Water-Level Recording Sensor

The barometric pressure sensor data are shown below, also in blue.

8. Maintenance

Campbell Scientific recommends that the CRS451/CRS456 be factory

recalibrated every 24 months. Before a CRS451/CRS456 is sent to Campbell

Scientific, the customer must get an RMA (returned material authorization)

number and fill out the Declaration of Hazardous Material and

Decontamination form.

8.1 Every Visit

• Collect data.

• Visually inspect the physical conditions.

• Check battery condition by using a laptop and HydroSci software to view

the battery voltage (see Section 6.6, Battery Voltage Reading). The

battery replacement procedure is provided in Section 8.3, Battery

Replacement.

• Check all readings; adjust offsets if necessary.

• Check recent data.

8.2 Every Two to Three Years or on a Rotating Schedule

• Send the CRS451/CRS456 in for inspection and calibration.

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Campbell CRS456 Bedienerhandbuch Seite 26