GasAlertMicro 5/PID/IR
User Manual
48
1. Connect the calibration hose to the 0.5l/min regulator on the
gas cylinder.
Note
Only use the calibration cap for bump tests and calibrations.
2. Connect the calibration hose to the intake inlet on the calibra-
tion cap. Arrows on the calibration cap indicate the direction of
gas flow.
3. Attach the calibration cap and tighten the knob.
Refer to
Applying Gas to the Sensors on page 50
Note
Ensure the knob is securely fastened before applying gas. Do
not overtighten the calibration cap. Ensure strong air currents
are kept away from the exhaust side of the calibration cap, as
this can affect the bump test accuracy.
4. Apply gas. Verify the visual, audible, and vibrator alarms acti-
vate.
5. Close the regulator and remove the calibration cap from the
detector. The detector will temporarily remain in alarm until the
gas clears from the sensors.
6. Disconnect the calibration hose from the cap and regulator.
Calibration and Setting Alarm Setpoints
Guidelines
When calibrating the detector, adhere to the following guidelines:
Recommended gas mixture:
CO: 50 to 500 ppm balance N
2
H
2
S: 10 to 100 ppm balance N
2
PH
3
: 1 to 5 ppm balance N
2
SO
2
: 10 to 50 ppm balance N
2
Cl
2
: 3 to 25 ppm balance N
2
NH
3
: 20 to 100 ppm balance N
2
NO
2
: 5 to 50 ppm balance N
2
HCN: 5 to 20 ppm balance N
2
ClO
2
: 0.1 to 1.0 ppm balance N
2
O
3
: 0.1 to 1.0 ppm balance N
2
VOC:100 ppm isobutylene
LEL: 50% LEL or 2.5% by vol. methane balance air
CO
2
: 5000 ppm balance air
O
2
: 18.0%
• To ensure accurate calibration, use a premium-grade calibration
gas. Gases approved by the National Institute of Standards and
Technology (NIST) improves the validity of the calibration.
• Do not use a gas cylinder beyond its expiration date.
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