Honeywell GasAlert Extreme, Руководство пользователя

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GasAlert Extreme
User Manual
32
Calibration and Setting Alarm Setpoints
Guidelines
When calibrating the detector, adhere to the following guidelines.
• Recommended gas mixture:
O
2
: clean air, 20.9% vol.
CO (low H
2
sensitivity): 50 to 500 ppm balance N
2
CO: 50 to 500 ppm balance N
2
H
2
S (high range): 10 to 100 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
NH
3
: (high range) 20 to 100 ppm balance N
2
NO
2
: 5 to 50 ppm balance N
2
HCN: 5 to 20 ppm balance N
2
ETO: 5 to 50 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
NO: 10 to 250 ppm balance N
2
• Before operating an ETO detector, allow the detector to stabilize
at the temperature it will be operating in. After the detector has
stabilized, zero the detector.
• It is necessary to periodically re-zero the ETO detector.
• To ensure accurate calibration, BW recommends using a pre-
mium-grade calibration gas approved by the National Institute of
Standards and Technology (NIST).
• Do not use a gas cylinder beyond its expiration date.
• Before calibrating a new NO or ETO sensor, allow the sensor to
stabilize for 2 hours in a safe area that is free of hazardous gas.
• Calibrate a new sensor before use. Allow the sensor to stabilize
before starting calibration (used: 60 seconds; new: 5 minutes).
• Calibrate the detector at least once every 180 days (for HCN
detectors calibrate at least once every 90 days), depending upon
use and sensor exposure to poisons and contaminants.
• Calibrate the detector if the ambient gas display varies at
start-up.
• It is best to calibrate the sensor before changing the alarm set-
points.
• Calibrate only in a safe area that is free of hazardous gas.
• To disable an alarm, set the alarm setpoint to zero.
• If a certified calibration is required, contact
BW Technologies by Honeywell .
Note
A generator must be used to calibrate O
3
and ClO
2
GasAlert
Extreme sensors.