isweek AS8900 - Zero;Calibration Mode; Peak Value Setting Mode; TWA Value Mode; STEL Value Mode

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1. To depress the button from Zero
/Calibration mode, the unit will entered
to Peak value setting mode.
2. In this mode, the display will shows all
3 gases peak gas readings and the
lowest readings of oxygen sensor, with
PEAK and ENTER icon are displayed.
2.4 PEAK VALUE SETTING MODE
3. To depress button will reset all peak value of the
current readings of 4 gases.
4. To depress button, then the unit will enter to TWA
value mode.
1. In Gas Monitoring mode, depress the
Button for third times, the unit will
enter to TWA (Time Weight Average)
value mode.
2. In this mode the display will show
TWA icon and only will 2 hazardous
and combustile gas sensor readings
are shown.
3. TWA value are reset while every time
the unit is power off, and the time base
is set for 8 hours.
2.5 TWA VALUE MODE
Operation Explanations
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1. In Gas Monitoring mode, depress the
Button for fourth times, the unit will
enter to STEL (Short Term Exposure
Limit) value mode.
2. In this mode the display will show
STEL icon and only will 2 hazardous
and combustile gas sensor readings
are shown.
3. TWA value are reset while every time
the unit is power off, and the time base
is set for 15 minutes.
2.6. STEL VALUE MODE
1. To depress the or button
simultaneously during the software
countdown time for 18 seconds will
put this unit into the Configuration
Mode.
2. In this mode, the unit is allow the user
to change the high, low TWA and STEL
alarm level as well as the security code
( if desired)
2.7 CONFIGURATION MODE
3. once the Configuration Mode is Entered, the security code
screen is displayed.
4. the preset code is 123, the first code will flash, then depress
or button for change the first code, then depress
button for second and third code number setting.
5. Once the security code is set and confirmed, depress the
button to escape the unit to other alarm setting mode.
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