sewerin EX-TEC Combi, Руководство по эксплуатации

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5 Testing / maintenance
5.3 Test gases
The following test gases are used in conjunction with the test set
SPE VOL tester to test zero point and sensitivity:
Gas Test gas
Methane CH
4
zero point: - fresh air
sensitivity 1: - 2.2 vol.% (50 %LEL) CH
4
in synth. air
sensitivity 2: - 100 vol.% CH
4
Propane C
3
H
8
zero point: - fresh air
sensitivity - 1.0 vol.% (59 %LEL) propane (C
3
H
8
)
in synth. air
Nonane C
9
H
20
( ⊗)
zero point: - fresh air
sensitivity - replacement test gas 0.30 vol.%
propane (C
3
H
8
) in synth. air (reading to
be a returned when replacement test
gas: 0.35 vol.%)
Carbon dioxide CO
2
zero point: - fresh air
sensitivity - 2.0 vol.% (CO
2
) in synth. air
Oxygen O
2
zero point: - 100 vol.% methane (CH
4
)
sensitivity - fresh air
Hydrogen sulphide H
2
S
zero point: - fresh air
sensitivity - 40 ppm hydrogen sulphide (H
2
S) in
synth. air
Carbon monoxide CO
zero point: - fresh air
sensitivity - 40 ppm carbon monoxide (CO) in
synth. air
Ammonia NH
3
( ⊗ )
zero point: - fresh air
sensitivity - 50 ppm Ammonia (NH
3
) in Nitrogen