GB
TECHNICAL SPECIFICATIONS/CERTIFICATIONS MSA
54 ALTAIR 5 - Operating Manual
5.3. IR sensors
Gases Display range Smallest
resolution
Response time
at 20°C
Reproducibility
of the zero point
Reprodu-
cibility
of the
measured
value
1)
t
50
t
90
CO
2
0 – 5 % Vol 0.01 % Vol
≤ 12 s ≤ 36 s ≤ ± 0.05 % Vol ≤ ±5%
CO
2
0 – 10 % Vol 0.01 % Vol
≤ 12 s ≤ 35 s ≤ ± 0.1 % Vol ≤ ±4%
CO
2
0 – 50 % Vol 0.5 % Vol
≤ 14 s ≤ 36 s ≤ ± 1.0 % Vol ≤ ±4%
C
3
H
8
0 – 100% LEL 1 % LEL
≤ 11 s ≤ 32 s ≤ ± 3 % LEL ≤ ±8%
C
3
H
8
0 – 25 % Vol 0.5 % Vol
≤ 12 s ≤ 35 s ≤ ± 0.5 % Vol ≤ ±4%
C
3
H
8
0 – 100 % Vol 1 % Vol
≤ 12 s ≤ 36 s ≤ ± 3 % Vol ≤ ±8%
C
4
H
10
0 – 100% LEL 1 % LEL
≤ 11 s ≤ 32 s ≤ ± 3 % LEL ≤ ±8%
C
4
H
10
0 – 25 % Vol 0.5 % Vol
≤ 12 s ≤ 35 s ≤ ± 0.5 % Vol ≤ ±4%
C
4
H
10
0 – 100 % Vol 1 % Vol
≤ 12 s ≤ 36 s ≤ ± 3 % Vol ≤ ±8%
CH
4
0 – 25 % Vol 0.5 % Vol
≤ 12 s ≤ 35 s ≤ ± 0.5 % Vol ≤ ±5%
CH
4
0 – 100 % Vol 1 % Vol
≤ 11 s ≤ 34 s ≤ ± 5 % Vol ≤ ±10%
1) Data in % of measurement range