sewerin EX-TEC PM 4 - Setting Ranges of Alarm Thresholds for Different Gas Types

62
7 Technical data
7.2.2 Setting ranges of alarm thresholds for different gas types
The factory settings are shown in bold.
Gas type AL1 AL2
All (%LEL) Threshold 10 % LEL 50 % LEL
Methane (CH
4
)
Threshold 0.45 % vol. 2.20 % vol.
Setting range 0.45 – 2.20 % vol. 0.50 – 2.64 % vol.
Increment 0.05 % vol. 0.05 % vol.
Propane
(C
3
H
8
)
Threshold 0.18 % vol. 0.86 % vol.
Setting range 0.18 – 0.85 % vol. 0.18 – 1.02 % vol.
Increment 0.02 % vol. 0.02 % vol.
Butane (C
4
H
10
)
Threshold 0.14 % vol. 0.70 % vol.
Setting range 0.14 – 0.70 % vol. 0.16 – 0.84 % vol.
Increment 0.02 % vol. 0.02 % vol.
Hexane
(C
6
H
14
)
Threshold 0.10 % vol. 0.50 % vol.
Setting range 0.10 – 0.50 % vol. 0.11 – 0.60 % vol.
Increment 0.01 % vol. 0.01 % vol.
Nonane
(C
9
H
20
)
Threshold 0.08 % vol. 0.36 % vol.
Setting range 0.08 – 0.35 % vol. 0.08 – 0.42 % vol.
Increment 0.02 % vol. 0.02 % vol.
Kerosene
(JFUEL)
Threshold 0.07 % vol. 0.35 % vol.
Setting range 0.07 – 0.35 % vol. 0.07 – 0.42 % vol.
Increment 0.01 % vol. 0.01 % vol.
Hydrogen (H
2
)
Threshold 0.40 % vol. 2.00 % vol.
Setting range 0.40 – 2.00 % vol. 0.44 – 2.40 % vol.
Increment 0.04 % vol. 0.04 % vol.
Acetylene
(C
2
H
2
)
Threshold 0.25 % vol. 1.15 % vol.
Setting range 0.23 – 1.10 % vol. 0.25 – 1.38 % vol.
Increment 0.01 % vol. 0.01 % vol.