11
Concentration of Calibration Gas set at Instrument
When Lock icon blinks after entering password, approach to A1 Alarm Value Set
Select Mode by pressing Power key.
If Arrow key is pressed during blinking of
icon, the program moves to Calibration Select Mode likely Sensor Calibration
Mode. Please pay attention to this point.
In the event that calibration fails, it would not convert to Gas
Detection Mode, blinking the mark with alarm sound. In this
case, calibration of the sensor or aftercare of the instrument is
required.
Gas
Combustible
Oxygen
Carbon
monoxide
Hydrogen
Sulfide
Concentration 50%LEL
(CH
4
)
18%vol
100 ppm
25 ppm
9. Method of Alarm Set and Display
Alarm Set
<Caution>
Changing alarm value of TWA and STEL can be applied only to Carbon
Monoxide and Hydrogen Sulfide. The change of alarm standard of TWA and STEL
can cause the fatal influence to the lives of operators and workers; therefore it
must be set in accordance with the regulations of the relevant country and the
standard of exposure at work site, if it is inevitably changed.