Honeywell GasAlertMicro 5 - Auto Span

GasAlertMicro 5/PID/IR
User Manual
50
Auto Span
5. When auto zero is complete, the following screens display.
.Note
Span sensors in the following order:
• Exotics (NH
3
, ClO
2
, O
3
, Cl
2
, and CO
2
)
• Single gas
• Quad gas (H
2
S, CO, LEL, and O
2
)
•PID
Note
A generator must be used for O
3
and ClO
2
sensors.
To ensure accurate calibration, a single gas calibration cap
must be used to calibrate O
3
and ClO
2
sensors.
• ClO
2
: Use a Tedlar bag as a buffer between the generator
and the detector (using the single gas calibration cap) to
regulate the flow rate to ensure accurate readings.
• Allow the Tedlar bag to fill for several minutes before
initiating calibration.
• O
3
: Calibrate using the generator and the single gas
calibration cap. Do not use a Tedlar bag.
• Set the generator to 0.5 ppm at a flow rate of 0.5 l/min.
Depending upon the gas cylinder being used, one or all four sensors
can be calibrated at one time.
Apply Span Gas Now
Attach the calibration cap (or single gas calibration cap for O
3
and ClO
2
) and apply gas to the sensor(s). To attach caps, refer
to Figure 3.
.
Refer to the following flow rates:
• 1000 ml/min. for NH
3
and Cl
2
• 500 ml/min. for CO
2
• 250-500 ml/min. (all other sensors)
GasAlertMicro 5 and PID
GasAlertMicro 5 IR