Ecotech Serinus 40 - 5.2 Span Calibration

Serinus 40 User Manual 2.2
Page 86
5.2 Span Calibration
Span calibrations calibrate the instrument to the upper limits of normal monitoring. Ecotech
recommends that 80% of the required measurement range should be sufficient for calibrations in
ambient monitoring situations (~400 ppb). A span calibration can be performed through either the
Calibration Port or Sample Port. Follow the relevant instructions below:
Calibration Port
1. Ensure a suitable span gas source is connected to the calibration port on the back panel of the
analyser (refer to Section 2.3.1).
2. Set the span source to a known concentration (80% of the required measurement range
recommended).
3. Enter the Main Menu  Calibration Menu.
4. Set Cal. Mode to Span.
5. Let the instrument stabilise (15 minutes).
6. Enter the Quick Menu and select Span Calibrate.
(Also accessible through: Main MenuCalibration MenuSpan Calibrate).
7. A box will appear with editable numbers. Enter the concentration being delivered to the
instrument.
8. The instrument will perform a span calibration.
9. Enter Main menu  Calibration Menu and set Cal. Mode back to Measure.
10. The instrument will return to normal activities.
Sample Port
1. Ensure suitable span gas source is connected to the sample port on the back panel of analyser
(refer to Section 2.3.1).
2. Set the span source to a known concentration (80% of the required measurement range
recommended).
3. Let the instrument stabilise (15 minutes).
4. Enter the Quick Menu and select Span Calibrate.
(Also accessible through: Main MenuCalibration MenuSpan Calibrate).
5. A box will appear with editable numbers. Enter the concentration being delivered to the
instrument.
6. Instrument will perform span calibration, when finished the instrument will return to normal
activities.