Honeywell Touchpoint Plus Technical Handbook page 108

4) Select Zero Calibration, check or uncheck First Calibration, touch [Start] and apply clean air (Zero Gas) to the
sensor:
5) View the reading until it is stable, and then touch [Apply].
6) Confirm that the gas reading is stable, and touch [Next].
7) Enter the concentration of the span gas and touch [Start]:
8) When ready touch [Start] and apply gas to the sensor.
9) View the reading until it is stable, and then touch [Apply]. This may take 3
type.
10) Confirm that the gas reading is correct.
11) Remove the span gas from the sensor and confirm that the gas reading has returned to zero. Choose whether or
not to calibrate another channel.
Touchpoint Plus will exit the calibration menu no matter of current gas reading in calibration mode in 45 s after
purging gas step. User may see gas alarm if user cannot ensure the gas reading value of Touchpoint Plus lower than
alarm level in purging step.
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Routine Maintenance and Scheduled Testing
108
5 minutes, depending on the gas
Touchpoint Plus
Technical Handbook