5. If the display shows N/A for the TWA, it means that there is not
enough data in that test to compute the TWA. The instrument
must be operated for a minimum of 15 minutes before a valid
TWA may be calculated.
6. Press the MENU key to return to STATISTICS MENU.
Clear Memory
Clear Memory permanently erases all
logged data and associated statistics
stored in memory. It will not affect the
Prog-1 through Prog-7 stored programs,
stored Cal Factors, or any other settings.
To Clear Memory
1. Select Data from the MAIN MENU with the ▲ ▼ keys and press
(ENTER).
2. Under DATA menu, select Clear Memory with the ▲ ▼ keys and
press (ENTER).
3. You will be prompted to confirm your intention.
4. Press (ENTER). You will be returned to the Data menu.
Alarms
The unit is equipped with four alarm types:
• General Alarm (Mass Concentration)
• General Alarm (Response Concentration)
• STEL Alarm (Mass Concentration)
• STEL Alarm (Response Concentration)
Each of the alarms have five default alarm settings: 0.5 mg/m
3
,
1 mg/m
3
, 3 mg/m
3
, 5 mg/m
3
, and 15 mg/m
3
and OFF. The Mass
Concentration measurement is used for the Mass Alarm and
Mass STEL types. The Response Concentration is used for the
Response Alarm and Response STEL types.
TrakPro™ software can be used to set each of the alarm values from
0.001 to 999 mg/m
3
.
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