Honeywell VA201T - Applying Gas and Adjusting Span Pot

Calibration Handbook
123Sensepoint Toxic
Zero Pot
Span Pot
Non-Oxygen Oxygen
Zero Pot
Span Pot
Twin Posts
CAUTION
The test gas may be hazardous, it is important that the outlet of the Flow Housing is exhausted to a safe area.
4. Apply gas at a flow rate of 1 litre per minute for the recommended application time.
5. Adjust the span pot through the Gassing Cap access holes to read the concentration of gas applied.
6. Remove the Gassing Cap and Flow Housing and replace with the original sensor cap fitted with a new
hydrophobic assembly.
NOTE:


sensor reaches a maximum value before spans are adjusted.