Warning %Lel - sewerin EX-Tec HS 680 Operating Instructions Manual

3.2.9

Warning %LEL

The measuring mode can be changed for the Warning %LEL
application via this menu item.
WARNING!
A
Risk to life from operating signal failure
If the operating signal does not sound, the device is not
safe to operate.
● Stop using the device immediately.
● Leave explosive areas or areas with a toxic or low-ox-
Area of use
– Testing work environments where explosion is possible, e.g.
when working on gas pipes or gas systems
Symbol
Unit
– % LEL or % vol.
Measuring range (methane CH
Infrared sensor
Measurement data display
0 10 20 30
Fig. 16: Warning %LEL measuring mode
ygen atmosphere immediately.
40 50 60 70 80 90 100
14
AL1
%LEL
CH4
)
4
0 to 100 % LEL or
0.00 to 4.40 % vol.
– Digit, for example,
14 % LEL CH
4
– Bar display with linear scale,
alarm thresholds marked AL1
and AL2
3 Operation
31