Crystal Engineering Corporation Reference Pressure Recorder NV-4AA-RTD100-300KPA

Warning: Do not remove or change the batteries in a hazardous atmosphere

Select the type of battery used

Unscrew the four captive screws (knurled Phillips head) to gain access to the battery compartment

Replace the batteries taking care to note polarity for their proper installation

After replacing the batteries and reinstalling the power module, the nVision will start operating immediately (without having to press the button)

Verify the battery module is properly sealed and installed to maintain your IP67 rating

Failure to properly seal the battery compartment may allow water damage that could permanently compromise the nVision. IP67 rating will be void if nVision is operated without 4AA power module in place

Sign off on the battery replacement

Warning: Calibration should be performed by qualified personnel with appropriate training and equipment.

If adjustment is required, consider returning the Vision or separate modules to the factory for service.

Enter the performance data from the calibration certificates

Is the Vision calibrated on an annual basis?

Calibration standards used should have a minimum rated accuracy of 0.008% of reading.

Enter the 'span' factor (userspan)

Calibration for Pressure Modules (PM):

Record displayed pressure for two or more pressure points.