Environment And Oxygen Sensor Readings; Specifications - MSA Orion G Operating Manual

Operating Manual
Table 7-3. COMBUSTIBLE GAS - Typical Performance
RANGE
RESOLUTION
METHANE
REPRODUCIBILITY
GAS
RESPONSE TIME
RANGE
RESOLUTION
REPRODUCIBILITY
Table 7-4. OXYGEN - Typical Performance Specifications
RANGE 0 to 25% O
RESOLUTION 0.1% O
REPRODUCIBILITY 0.3% O
RESPONSE TIME 90% of final reading

Environment and Oxygen Sensor Readings

A number of environmental factors may affect the oxygen sensor
readings, including changes in pressure, humidity and
temperature. Pressure and humidity changes affect the amount of
oxygen actually present in the atmosphere.
Chapter 7, Performance Specifications

Specifications

0 to 100% LEL or
0 to 5% CH
4
1% LEL or
0.05% CH
4
3% LEL to 50% LEL reading
5% LEL to full scale or
0.2% CH to 2.5% Methane
4
0.3% CH to full scale
4
90% of final reading in 30 seconds*
(normal temperature range)
5 to 100% CH
4
1% CH
4
+5% full scale or 10% of reading, whichever
is greater
*See TABLE 7-2, NOTE 1.
2
2
, for 2 to 25% O
2 2
30 seconds (normal temperature
range)*
3 minutes (extended temperature
range)
*See TABLE 7-2, NOTE 1.
7-3