65
Calibration
Zero CAL-CHECK
™
Calibration Validation Test
The Zero CAL-CHECK™ test is used to ensure that the flow meter
still retains its original NIST-traceable calibration at zero flow. If zero
flow can be established, the sensor does not need to be removed and
the procedure can be done in the pipe. Alternatively, a Packing Gland
Assembly can be used to remove the sensor from the gas stream to
create a “no flow” condition.
Note: If the Zero CAL-CHECK™ test is performed using the MTI10/MTL10
View™ Software, at the completion of the test, a Zero CAL-CHECK™
Certificate may be printed for a record of the test. This certificate will
display a pass/fail result.
Fig. 5.3: Normal Mode vs. Zero CAL-CHECK™ Mode