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4) TWA VALUE (Threshold Limit Value - Time Weighted Average: Time weighted average)
The TLV-TWA alarm will sound when the average concentration (mg/m3) from the start to the
end of measurement in TWA mode exceeds the set value.
And a message "T-ALARM" will be displayed on the screen.
If the set measurement time is less than 8 hours, the set time will be applied as is.
*If the [SET] key is pressed when the integer part is 10, the value is automatically adjusted to
the TLV-STEL setting value of -0.0001 and the display will be normal.
*The TLV-TWA setting value can be set from 0.001 to 10.000 mg/m3.
5）ALARM SET
6）SET TO START
Set the value in the following order: integer part → first
decimal place →
decimal place.
Use the [△][▽] keys to move cursor/change value.
Use [SET] key to select/set next value/apply the change.
[MENU] key to cancel/return.
Set alarm ON/OFF.
Start measurement with the set contents.
*Data cannot be saved.
second decimal place →
third
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