Crystal Engineering Corporation Reference Pressure Recorder NV-10KPSI

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

If adjustment is required, return the Vision or separate modules to the factory for calibration

Under normal operating conditions, the Vision should be calibrated on an annual basis

Are the calibration standards used have a minimum rated accuracy of 0.008% of reading?

There are no internal potentiometers. The nVision contains a 'span' factor (userspan), set to approximately 1 (as shipped from the factory)

Record displayed pressure for two or more pressure points

Would the nVision benefit from an overall increase or decrease of the indicated pressures?

Adjust userspan according and validate results

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

Select the type of battery used

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

Replaced the batteries taking care to note polarity for their proper installation?

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

Verified 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