Series 3000 Xpis Calibration Procedure; Zero And Span Calibration - Honeywell VA201T Calibration Handbook

Series 3000 XPIS Calibration Procedure

The following equipment is required:
Appropriate span gas cylinder
Flow regulator set to 300-375mL/min
Tubing
Magnet
Calibration gas flow housing
NOTE
! COMPRESSED AIR CYLINDER  6OL OXYGEN SHOULD BE USED TO ZERO CAL IF AREA CONTAINS ANY RESIDUAL TARGET
gas. If no residual gas is present then background air can be used to perform zero.

Zero and Span Calibration

CAUTION
Before initial calibration allow the detector to stabilize for 30 minutes after applying power. When in zeroing
and span calibration mode the current output from the detector is inhibited (default 3mA) to avoid false alarms.
It is recommended for most sticky gases the tubing should be PTFE with short pieces of rubber tube to make
THE lNAL CONNECTION DUE TO THE INmEXIBILITY OF 04&% 4HIS MINIMIZES ADHESION OF THE GAS TO THE TUBE SURFACE AND
allows for more accurate measurement.
NOTE
)T IS RECOMMENDED THAT THE CALIBRATION IS MADE WHERE THE SENSOR  TRANSMITTER HAVE STABILIZED WITH THEIR LOCAL
ENVIRONMENT )T IS RECOMMENDED THAT CALIBRATIONS BE PERFORMED AT A STABLE TEMPERATURE IN WHICH THE SYSTEM
is to be used. Re-calibration is recommended if the temperature of local environment has varied by more
THAN   DEGREES # FROM THE TEMPERATURE OF CALIBRATION
It is essential that the sensor is tested frequently to be sure the system is operating properly. Typically gas
DETECTORS SHOULD BE TESTED AT LEAST TWICE PER YEAR (OWEVER IT IS RECOMMENDED THAT TESTING IS CONDUCTED
ON A MORE FREQUENT BASIS AFTER INITIAL START UP AS SENSOR OPERATION AND PERFORMANCE WILL VARY IN DIFFERENT
environmental conditions and in the presence of other gases. It is the responsibility of the user to determine
an appropriate calibration frequency for the application.
1. If using compressed air, push the calibration gas flow housing onto the bottom of the sensor and apply
the gas.
2. To access the calibration mode, hold the end of the magnet over the switch located at the top centre of
the detector display for at least 5 seconds and then remove.
3. The display will indicate the first menu mode menu 'SEt CAL'.
4. Place magnet over the '✓' switch and remove to enter the Calibration menu.
5. The display will show the current gas reading, 'ZEro' and the ' ' icon flashes.
Series 3000 XPIS
Calibration Handbook
115