- 10 -
2. Detection
When <Gas Concentration Display> is displayed, the
Multi-gas Detector is ready for use.
--> See “
LCD Indication
” on page 7
--> See “
Gas Concentration Display
” on page 11
--> See “
Gas Alarm Activation
” on page 12
<Gas Concentration Display>
WARNING
•
Do not block the detection port as it cannot detect gases.
•
Keep the filter element dry and clean. If the filter element
becomes dirty or wet, it may affect the detection performance.
•
Keep the gas detection port dry from rain or water when
wearing the Multi-gas Detector.
•
When the reading exceeds full scale, move the Multi-gas
Detector to the clean air immediately, as it may become slow to
return to the base or it may affect the detection performance.
•
Careful not to block the buzzer port as the alarm volume may
be too small to notice.
For button operation, a “press” is less than one second, and “press and hold”
is about three seconds.
NOTE
CAUTION
•
A significant change in temperature or humidity at work
environment may affect the concentration values of 21.0vol%,
0%LEL and 0ppm. In this case, press and hold the [ AIR
ADJ.] button to start “
AIR Adjustment (Zero Adjustment)
” (page
14) in the clean air.
•
Blinking “0” or “0.0” of gas concentration
indicates negative value. In this case, high
concentration gas may have been detected,
or AIR Adjustment may have been performed
in gas atmosphere.
Perform “
AIR Adjustment (Zero Adjustment)
” (page 14) in the
clean air. If [E-S] is displayed (page 27), turn OFF and ON the
power in the clean air.
•
The vibration alarm may be difficult to notice depending on the
wearing position.
Blinking
▲
- 9 -
3 - 2. Operating Procedure
* In this instruction manual describes for the target gases of oxygen, combustible gas
(methane), hydrogen sulfide, and carbon monoxide.
1. Turn ON the Power
-> Warm-up -> Displays <Gas Concentration Display>
Press and hold the [ POWER] button to switch into <Gas Type Display>.
After a beep, all segments are displayed on the LCD, “ON” appears, and the countdown
starts: 3, 2, 1. Release the button after a bleep.
Then <Gas Type Display>, <Full Scale>, <AL1 Alarm Set Value>, <AL2 Alarm Set
Value>, <TWA Alarm Set Value>, <STEL Alarm Set Value> and <Time/Temperature>
will be displayed automatically. After <Air Adjustment> and the warm-up operation is
completed, it switches into <Gas Concentration Display> after three beep sounds.
•
The warm-up operation will take about a maximum of 2 minutes.
•
Only the power OFF button is available while the warm-up operation.
•
In case of an error occurs, see “
Error Messages
” on page 27.
Make sure to turn ON the power in the clean air. Since the air
adjustment starts automatically, the erroneous gas concentration
will be displayed in gas atmosphere.
NOTE
Always perform Maintenance Check (page 33) before use.
MENU
Warm-
up
Displays <Gas
Concentration
Display>
1.
Turn ON
2.
Detection
3.
Turn OFF
STEPS
<All Segments>
<Gas Type Display>
<Full Scale>
<AL1 Alarm Set>
<AL2 Alarm Set>
<TWA Alarm Set>
<STEL Alarm Set>
<Time/Temperature>
<Air Adjustment> <Gas Concentration>
<For methane> <For isobutane>
Gas
Type
Display
WARNING
WARNING
