Span Calibration - Honeywell VA201T Calibration Handbook

NOTE:
3PAN POTENTIOMETER LOCATED CLOSEST TO THE TWIN POSTS
0LEASE REFER TO 3ENSEPOINT 4ECHNICAL -ANUAL OR THE DETAIL PROCEDURE ON HOW TO ADJUST THE :ERO AND 3PAN
potentiometer.
8. When the zero gas reading is stable use '✓' to confirm zero calibration.
9. If using zero-air, turn it off. Zeroing is complete and saved.
10. The display shows 'SPAn' with 'YES' flashing.
11. If span calibration is required use '✓' proceed to the next step. If span calibration is not required, use 'TS
to select 'No' and '✓' to return to configuration mode.

Span Calibration

12. The display shows the current calibration span gas concentration while flashing the ' 'icon. Use 'TS' to
change the calibration span gas concentration, and '✓' when required span calibration level is set.
13. The display will show the current gas reading, and the ' ' icon flashes.
NOTE:
4HIS EXAMPLE ASSUMES A PPM SPAN GAS FOR A  PPM #/ RANGE FOR THE WHOLE PROCEDURE OF THE
calibration.
14. Connect the regulator to the span gas cylinder. Apply gas at a flow rate of 1 litre per minute for the
recommended application time.
15. Apply the span gas to the sensor using the Sensepoint Gassing Cap. The live gas reading is displayed.
Observe the Span reading on the XCD RTD display. If it shows a stable reading of span gas "250" there
is no need to carry out any further adjustment. If not, it is necessary to adjust the sensor set up follow
Sensepoint XCD-RTD
Zero Pot
Span Pot
Non-Oxygen
Sensepoint Toxic Sensor Zero and Span potentiometer
Calibration Handbook
Zero Pot
Span Pot
Twin Posts
Oxygen
143