MSA altair 4 Service Manual

Technical DataMSA
ALTAIR 4
GB
27
Hydrogen Sulphide
Reproducibility ± 5 ppm [5.8 mg/m³] CO or 10 % of reading, whichever is
greater [normal temperature range]
0 to 300 ppm [0 to 348 mg/m³] CO
±15 % >300 ppm [348 mg/m³] CO
[normal temperature range]
± 10 ppm [11.6 mg/m³] CO or 20 % of reading, whichever
is greater [extended temperature range]
Response time 90 % of final reading in less than or equal to 30 sec
[normal temperature range]
60 sec [normal temperature range]
Range 0 - 200 ppm [0 to 284 mg/m³] H
2
S
Resolution 1 ppm [1.4 mg/m³] H
2
S
for 3 to 200 ppm [4.3 to 284 mg/m³] H
2
S
Reproducibility ± 2 ppm [2.8 mg/m³] H
2
S or 10 % of reading, whichever is
greater [normal temperature range]
0 to 100 ppm [0 to 142 mg/m³] H
2
S
±15 % >100 ppm [142 mg/m³] H
2
S [normal temperature
range]
± 5 ppm [7.1 mg/m³] H
2
S or 10 % of reading, whichever is
greater [extended temperature range]
Response time 90 % of final reading in less than or equal to 30 sec
[normal temperature range]
60 sec [normal temperature range]

MSA altair 4 Specifications

General

Operating Temperature	-20°C to 50°C (-4°F to 122°F)
Ingress Protection	IP67
Type	Multi-gas Detector
Gases Detected	LEL, O2, CO, H2S
Display	LCD
Weight	Approx. 220g (with battery)
Sensor Type	Electrochemical (for H2S, CO, and O2); Catalytic Bead (for LEL)
Alarm Type	Audible, Visual, Vibrating
Detection Range	O2: 0-30% vol, LEL: 0-100% LEL, CO: 0-999 ppm, H2S: 0-500 ppm
Humidity Range	15% to 90% RH non-condensing
Certifications	UL, CSA, ATEX, IECEx