GasAlertMicro 5/PID/IR
User Manual
2
Gases Monitored
The following table lists the gases that are monitored by the detector.
Table 1. Gases Monitored
CAUTION: FOR SAFETY REASONS, THIS EQUIPMENT MUST BE 
OPERATED AND SERVICED BY QUALIFIED PERSONNEL ONLY. 
READ AND UNDERSTAND THIS USER MANUAL COMPLETELY 
BEFORE OPERATING AND SERVICING.
Safety Information - Read First
Use the detector only as specified in this user manual, otherwise the 
protection provided by the detector may be impaired.
International symbols used on the detector and in this user manual are 
defined in Table 3.
.
Read the Cautions on the following pages before using the detector.
ec Warning
This instrument contains batteries. Do not mix with the 
solid waste stream. Spent batteries must be disposed of 
by a qualified recycler or hazardous materials handler.
Dispose of lithium cells immediately. Do not 
disassemble and do not dispose of in fire. Do not mix 
with the solid waste stream. Spent batteries must be 
disposed of by a qualified recycler or hazardous 
materials handler.
Gas Detected Unit of Measure
Oxygen (O
2
)
% volume
Combustible gases (LEL)
a) percent of lower explosive 
limit (%LEL)
b) percent by volume 
methane 0-5.0% v/v
Carbon monoxide (CO) parts per million (ppm)
Hydrogen sulfide (H
2
S)
parts per million (ppm)
Phosphine (PH
3
)
parts per million (ppm)
Sulfur oxide (SO
2
)
parts per million (ppm)
Chlorine (Cl
2
)
parts per million (ppm)
Ammonia (NH
3
)
parts per million (ppm)
Nitrogen dioxide (NO
2
)
parts per million (ppm)
Hydrogen cyanide (HCN) parts per million (ppm)
Chlorine dioxide (ClO
2
)
parts per million (ppm)
Ozone (O
3
)
parts per million (ppm)
Volatile organic compounds 
(VOC)
parts per million (ppm)
Carbon dioxide (CO
2
) parts per million or %vol CO
2