Alarm Levels - Thermo Scientific TVA2020 Instruction Manual

Display Menus

Alarm Levels

Alarm Levels
3-10 TVA2020 Instruction Manual
CALIB MENU
1=Zero
3=Backgnd 4=RF
5=Flow
1. Zero the instrument
2. Calibrate the reference point(s) using known span gas
3. Take background reading
Note For most monitoring, background is set to zero. Use if regulations or
permits require/allow background elimination.
4. Set instrument response factors if necessary
5. Calibrate the flow sensor
6. Configure
a. Calibrate the reference point(s) using known span gases. The
TVA2020 can be configured for as many as nine different span gas
values (2=Span).
The TVA2020 is supplied with three user-configurable alarms — STEL
(short term exposure limit), Low Ceiling, and High Ceiling. When any of
these alarms is exceeded, an alarm message appears on the sidepack display
and probe display and an alarm tone is generated. Press EXIT to
acknowledge the alarm message and sounder. Once acknowledged, the
display returns to the live measurement with an upper case letter
representing the alarm or alarm combination appearing to the right of the
display.
ALARM LEVELS
1=STEL
2=Low Ceiling
3=High Ceiling
2=Span
6=Cfg
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