Xnx Calibration Procedure - Honeywell VA201T Calibration Handbook

XNX Calibration Procedure

Each of the sensor technologies supported by the XNX® Universal Transmitter uses unique calibration
procedures. The description provided illustrates the XNX interface with the sensor. The description does not
replace the procedures found in each sensor's operating manual.
The Gas Calibration menu is used for Zero and Span calibration as well as functional gas testing (bump test).
The Gas Calibration menu is accessed from the Main Menu.
This table shows the Gas Calibration menu icons:
WARNING
Do not use the XNX Universal Transmitter in oxygen-enriched atmospheres. Concentrations displayed will be
adversely affected by oxygen depletion.
CAUTION
4HE CALIBRATION PROCEDURE SHOULD BE PERFORMED ONLY BY QUALIlED PERSONNEL 4AKE APPROPRIATE PRECAUTIONS WITH
CYLINDERS OF mAMMABLE AND TOXIC GASES
The default calibration values for the "Calibration Required" diagnostic vary based on sensor type. This value
can be reprogrammed in accordance with site requirements to ensure the highest level of safety. Correct
operation of each sensor should be confirmed before each use by calibration with a certified test gas of known
concentration before commissioning
CAUTION
Recalibrate if the temperature of local environment has varied by more than ±15°C from the temperature of calibration.
WARNING
Honeywell recommends periodic bump tests (every 30 days or in accordance with customer site procedures)
to the sensor to insure proper operation and compliance with the functional safety rating of the installation.
XNX Universal Transmitter
Symbol
Gas Calibration
Bump Test
Calibrate mA Output
Soft Reset
Align Excel
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Calibration Handbook
Description