Thermo Scientific TVA-1000B Instruction Manual - Geotech ...
Thermo Scientific TVA-1000B Instruction Manual - Geotech ...
Thermo Scientific TVA-1000B Instruction Manual - Geotech ...
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Display Menus MI 611-185 – June 1996<br />
2. To perform the actual SPAN calibration (for example at 100 ppm):<br />
FID-only: or PID-only: or PID/FID:<br />
Press ENTER Press ENTER Press 1, 2, or 3<br />
Apply Span Gas<br />
FID: 100.00 ppm<br />
Enter=Start<br />
Apply Span Gas<br />
PID: 100.00 ppm<br />
Enter=Start<br />
Apply Span Gas<br />
100.00 ppm<br />
Enter=Start<br />
3. Apply the appropriate span gas to the probe at ambient pressure (using a clean and<br />
labeled gas sampling bag) and then press ENTER.<br />
FID 7654321<br />
FID: 100.00 ppm<br />
Wait for Span<br />
Exit=Cancel<br />
PID 7654321<br />
PID: 100.00 ppm<br />
Wait for Span<br />
Exit=Cancel<br />
PID 7654321<br />
FID 7654321<br />
Wait for Span<br />
Exit=Cancel<br />
The instrument analyzes the span sample.<br />
FID 7654321‘<br />
PID 7654321<br />
PID 7654321<br />
FID 7654321<br />
-ACCEPTED-<br />
-ACCEPTED-<br />
-ACCEPTED-<br />
When only one reference span gas concentration is used, the ACCEPTED message<br />
appears for a short time and is then replaced by the normal CALIBRATION<br />
menu.<br />
When the ACCEPTED message disappears and the CALIBRATION menu<br />
appears, the SPAN reference value is stored. This value is stored in non-volatile<br />
memory until the next calibration is performed. The date and time of this calibration<br />
are stored and can be accessed through the INFO menu.<br />
4. If more than one reference span gas concentration has been defined, the span calibration<br />
display returns. Move to the next concentration point (Up/Dn keys) and<br />
repeat steps 2-3 above until each reference gas concentration point has been calibrated.<br />
Alarm Levels<br />
The <strong>TVA</strong>-<strong>1000B</strong> is supplied with three user-configurable alarms — HI Ceiling, Low Ceiling,<br />
and STEL (short term exposure limit). When any of these alarms is exceeded, an alarm message<br />
appears on the sidepack display and probe display (enhanced version only) and an alarm<br />
tone is generated. Press EXIT to acknowledge the alarm message and sounder. Once acknowledged,<br />
the display returns to the live measurement with an upper case letter representing the<br />
alarm or alarm combination appearing to the right of the display. The three types of user configurable<br />
alarms are:<br />
35
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