63
7 Technical data
z
Alarm thresholds (as delivered, depending on fitted sensors)
Alarm Gas concentration,
factory setting
Operator guidance by
Application
Sensor (operating
mode)
AL1
10 % LEL
House, Enclosed
spaces, Warning
Gas detection,
Gas warning
AL2
50 % LEL
House, Enclosed
spaces, Warning
Gas detection,
Gas warning
AL3
100 % LEL (end of
measuring range)
Warning
Gas warning
AL4
0.5 % vol.
Automatic
AL5
100 % vol.
Measuring
Gas measuring
7.3
Response times
z
Response times of
EX-TEC PM 4
(pump devices)
– ppm range:
t
90
< 7 s
for methane (CH
4
)
t
90
< 7 s
for propane (C
3
H
8
)
t
90
< 7 s
for butane (C
4
H
10
)
t
90
< 7 s
for hydrogen (H
2
)
– LEL range:
t
50
< 5 s
for methane (CH
4
)
t
50
< 6 s
for propane (C
3
H
8
)
t
90
< 12 s
for methane (CH
4
)
t
90
< 16 s
for propane (C
3
H
8
)
t
90
< 3 min for hexane (C
6
H
14
)
t
90
< 3 min for nonane (C
9
H
20
)
t
90
< 3 min
for kerosene (JFUEL)
t
90
< 12 s
for acetylene (C
2
H
2
)
– % vol. range:
< 10 s
Probes increase the stated response times.
