17
•
this measuring range is used to
monitor proximity to the
LEL
LEL
LEL
LEL
LEL
(
lllll
ower
e
e
e
e
e
xplosion
lllll
imit)
•
after approx. 8 seconds' warm-
up time a stable zero point is
reached
•
the pump runs at minimum power
and the acoustic operating signal
(item 7) sounds every 5 seconds
•
when the pre-set threshold of
20 %LEL is exceeded
methane:
methane:
methane:
methane:
methane:
20 %LEL = 0,88 %VOL
(display = 0,90 %VOL)
propane:
propane:
propane:
propane:
propane:
20 %LEL = 0,34 %VOL
the
advance alarm
advance alarm
advance alarm
advance alarm
advance alarm
is triggered
both optically (item 1) and
acoustically (item 7)
•
the advance alarm is an
intermittent tone quite distinct
from the operating signal;
it
ceases after a certain period
ceases after a certain period
ceases after a certain period
ceases after a certain period
ceases after a certain period
and cannot be cleared
•
if the concentration exceeds
100 %LEL
methane:
methane:
methane:
methane:
methane:
100 %LEL = 4,40 %VOL
propane:
propane:
propane:
propane:
propane:
100 %LEL = 1,70 %VOL
the
main alarm
main alarm
main alarm
main alarm
main alarm
is triggered
optically (item 1) and acoustically
(item 7)
Summary of Contents for EX-TEC SR2
Page 1: ...Instructions Operating 102424...
Page 3: ...1 Design of the EX TEC SR5 1 2 3 6 7 4 5...
Page 4: ...2 Notes...
Page 49: ...47 Declaration of Conformity EX TEC SR5...
Page 50: ...48 Declaration of Conformity EX TEC SR4...
Page 51: ...49 Declaration of Conformity EX TEC SR2...
