MSA Sirius Mode D'emploi page 73

FACTORY-SET
ALARM SETPOINTS LOW ALARM
CO
H 2 S
LEL
O 2
VOC
*NOTE: Extended temperature range indicates gas readings may vary
slightly if calibrated at room temperature. For optimal perform-
ance, calibrate instrument at temperature of use.
Table 7-3.
COMBUSTIBLE GAS - Typical Performance Specifications
REPRODUCIBILITY**
TEMPERATURE GAS CONCENTRATION
RANGE RANGE
-20°C up to 0°C 0% up to and including 50% LEL
(Extended) 0.00% up to and including 2.50% CH 4
Above 50% and up to and including 100% LEL
Above 2.50% and up to and including 5.00% CH 4
0°C to 40°C (Normal) 0% up to and including 50% LEL
0.00% up to and including 2.50% CH 4
Above 50% and up to and including 100% LEL
Above 2.50% and up to and including 5.00% CH 4
Above 40°C and up to and
including 50°C Extended 0% up to and including 50% LEL
0.00% up to and including 2.50% CH 4
Above 50% and up to and including 100% LEL
Above 2.50% and up to and including 5.00% CH 4
Footnotes:
1. The Canadian Standards Association (CSA) has verified methane reproducibility in the normal
temperature range per CSA Standard C22.2 No. 152.
2. CSA has verified methane repoducibility in the extended temperature ranges per the
manufacturer's specifications. CSA has not verified methane reproducibility in the extended
temperature ranges per CSA Standard C22.2 No. 152, because the extended temperature ranges
are outside the scope of CSA Standard C22.2 No. 152.
7-2
HIGH ALARM
35 PPM 100 PPM
10 PPM 15 PPM
10% 20%
19.5% 23.0%
50 100
STEL TWA
400 35
15 10
-- --
-- --
25 10
REPRODUCIBILITY
+5% LEL 2
+0.25% CH 4 2
+8% LEL 2
+0.40% CH 4 2
+3% LEL 1
+0.15% CH 4 1
+5% LEL 1
+0.25% CH 4 1
+5% LEL 2
+0.25% CH 4 2
+8% LEL 2
+0.40% CH 4 2