Factory-Set Alarm Thresholds And Setpoints - MSA ALTAIR 5X Manuel D'utilisation

5.1

Factory-set Alarm Thresholds and Setpoints

Check the monitor or calibration certificate for exact alarm levels as they vary depending
on national or corporate regulations.
Sensor LOW alarm
CL 0.5 ppm
2
ClO 0.1 ppm
2
CO 25 ppm
CO-HC 25 ppm
COMB 10 % LEL
H S 10 ppm
2
H S-LC 5 ppm
2
HCN 4.5 ppm
HCN 4.5 ppm
NH 25 ppm
3
NO 25 ppm
NO (S 20) 2.0 ppm
2
NO (XCell) 2.5 ppm
2
O 19.5 %
2
PH 0.3 ppm
3
SO 2.0 ppm
2
IR Butane
8 % Vol
(25 % Vol)
IR CO (10 %
2
0.5 % Vol
Vol)
IR Methane
2
- -
(100 % Vol)
IR Propane
15% LEL
(100 % LEL)
IR Propane
2
- -
(100 % Vol)
1
STEL and TWA not applicable for combustible and oxygen gases.
2
No alarm thresholds are possible for the 0-100 % Vol Methane and Propane IR sensors. In environ-
ments with >100 % LEL combustible gas present, devices with a catalytic combustible LEL sensor will
be in a latching over-range alarm, and the 100 % Vol IR sensors will display the % Vol gas reading.
HIGH alarm SETPOINT min SETPOINT max STEL
1.0 ppm 0.3 ppm
0.3 ppm 0.1 ppm
100 ppm 10 ppm
100 ppm 10 ppm
20 % LEL 5 % LEL
15 ppm 5 ppm
10 ppm 1 ppm
10.0 ppm 2.0 ppm
10.0 ppm 2.0 ppm
50 ppm 10 ppm
75 ppm 15 ppm
5.0 ppm 1.0 ppm
5.0 ppm 1.0 ppm
23.0 % 5.0 %
1.0 ppm 0.3 ppm
5.0 ppm 2.0 ppm
15 % Vol 5 % Vol
1.5 % Vol 0,2 % Vol
2 2
- - - -
29% LEL 9% LEL
2 2
- - - -
ALTAIR 5X/ALTAIR 5X IR
Technical Specifications
7.5 ppm 1.0 ppm
0.9 ppm 0.3 ppm
1700 ppm 100 ppm
8500 ppm 100 ppm
1
60 % LEL --
175 ppm 15 ppm
70 ppm 10 ppm
20.0 ppm 10 ppm
20.0 ppm 10.0 ppm
75 ppm 35 ppm
100 ppm 25 ppm
17.5 ppm 5.0 ppm
47.5 ppm 5.0 ppm
1
24.0 % --
3.75 ppm 1.0 ppm
17.5 ppm 5.0 ppm
1
25 % Vol --
8 % Vol 0.5 % Vol
2 1
- - --
1
100% LEL --
2 1
- - --
TWA
0.5 ppm
0.1 ppm
25 ppm
25 ppm
1
--
10 ppm
1 ppm
4.5 ppm
4.5 ppm
25 ppm
25 ppm
2.0 ppm
2.5 ppm
1
--
0.3 ppm
2.0 ppm
1
--
1.5 % Vol
US
1
--
1
--
1
--
53