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4 Span Calibration Procedure
1. After following calibration gas bottle and equipment setup to proper working temperature,
complete the zeroing process and start sampling the calibration gas using the parSYNC®
miniPEMS (minimum of approximately 10 seconds of steady state span gas measurement).
2. Observe the signal for the span gas in the chart on the GASES or RAW tab. For example, if your
span calibration gas has NO and CO
and CO
channels. Once you have a "10 second" stable signal, turn off the gas supply and tap the
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"Pause" button to stop further sampling.
3. On RAW tab> Use the vertical zoom button to select the record area of the chart where you
have the stable signal for your test gases. This function is located in the middle function of the
control palette, as shown below (also see Appendix for full description of chart design
elements). To zoom out to normal view use the lower right function of the control palette.
4. After zooming in to the appropriate measurement area, hit the "Get Avg" button to populate
the average values from the selected area in the numeric cells on the right-side of the chart.
5. Note the voltage values for the gas or gases that were span tested. In this example, that would
be NO and CO
.
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6. This process should be repeated for each appropriate calibration gas bottle that you require. Be
sure to hit the "Get Avg" button each time a new record area is selected.
7. Input these measured voltage values in the "Span Voltage" cells of the "Config > Calibration
Settings" sub-tab. Also input the calibration gas concentrations (marked on the test bottle) into
the "Span Calibration" cells.
, then you are only paying attention to the signal for the NO
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