US
MSA
TECHNICAL SPECIFICATIONS/CERTIFICATIONS
ALTAIR 5 - Operating Manual
51
H
2
S CO O
2
Combustible
Measuring
range
0-200 ppm
0-1000 ppm 0-25 % Vol.
0-100% LEL
0-5.00% CH4
SO
2
NO
2
NH
3
*PH
3
0-20.0 ppm
0-20 ppm
0-100 ppm
0-5.00 ppm
HCN Cl
2
ClO
2
*
Measuring
range
0-100 ppm
0-20.0 ppm
0-1.00 ppm
*check with MSA for sensor availability
5.2. Factory-set Alarm thresholds
Sensor
LOW alarm HIGH alarm
STEL
TWA
COMB
10 % LEL
20 % LEL
--
--
CO
25 ppm
100 ppm
100 ppm
25 ppm
H
2
S
10 ppm
15 ppm
15 ppm
10 ppm
O
2
19.5 %
23.0 %
--
--
SO
2
2.0 ppm
5.0 ppm 50
ppm 2.0
ppm
NO
2
2.0 ppm
5.0 ppm
5.0 ppm
2.0 ppm
NH
3
25 ppm
50 ppm
35 ppm
25 ppm
PH
3
0.3 ppm
1.0 ppm
1.0 ppm
0.3 ppm
Cl
2
0.5 ppm
1.0 ppm
1.0 ppm
0.5 ppm
ClO
2
0.1 ppm
0.3 ppm
0.8 ppm
0.1 ppm
HCN
4.5 ppm
10.0 ppm
10 ppm
4.5 ppm
CO
2
0.5 % Vol
1.5 %
0.5 %
1.5 %
IR Propane (LEL)
15 % LEL
30 % LEL
IR Butane
(25 % Vol)
15 % LEL
30 % LEL
IR Methane
(25 % Vol)
8% Vol
15 % Vol
IR Propane
(25 % Vol)
8% Vol
15 % Vol
IR Butane
(25 % Vol)
8% Vol
15 % Vol