Thermo Scientific 43iQTL Instruction Manual page 155

Thermo Scientific
3. Monitor the zero air reading and wait for the reading to stabilize.
4. From the Home Screen, press Calibration>Calibrate Background.
The Target Concentration button will read 0.00. The Calculated
Background button will display the background needed to make the
current SO concentration go to 0.00.
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5. Press Calibrate to set the SO
background.
6. Connect a source of calibration gas to the SAMPLE bulkhead. The
calibration gas concentration should be approximately 80% of the full-
scale range.
7. To ensure that the calibration gas is being measured at atmospheric
pressure, check that the sample flow in the analyzer is approximately
0.5 LPM. Actual sample air flow should be 0.8 LPM or more, with the
excess flowing out the atmospheric bypass.
8. Sample the vented calibration gas and wait for the instrument reading
to stabilize.
9. From the Home Screen, choose Calibration>Calibrate Span
Coefficient.
The user sets the span concentration by pressing the Edit Span
Concentration button. The Calculated Span Coefficient button will
show what the span coefficient will be set to if the Calibrate button is
pressed. Pressing the Calibrate button will save the new coefficient and
calibrate the instrument.
10. Enter the SO calibration gas concentration using the pushbuttons, and
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then press Calibrate to calibrate the instrument to the SO
gas.
Note The minimum and maximum analog output configuration values
should be set to the default settings (minimum 0%; maximum 100%).
reading to zero and to save the new
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43iQTL Instruction Manual
Calibration
Calibration
calibration
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