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3.3.3
Calibration Settings
The other sub-tabs under the Config tab are labeled "Calibration Settings" and "Admin". The calibration
settings include the user defined span and zero concentration values for the calibration gases and the
span and zero voltage response from the sensors (values that are saved to/from the Config file). The
gaseous sensors (NO
, NO, CO
, and CO if that is available) have both span and zero concentration and
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voltage settings. The particulate matter (PM) sensors – scattering, ionization, and opacity – have only
the span and zero voltage setting while the span and zero concentration settings should remain "NaN"
(Not a Number).
The span and zero concentration values for NO
and NO are in parts per million (ppm), while those for
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CO
and CO are in percent (%). The user will manually enter the span and zero concentration values for
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the gases when doing a span calibration. The span concentration value is obtained from the calibration
gas bottle while the zero concentration values are, typically, 0 ppm or 0% (user may input a different
zero level for any of the gasses if desired (e.g. 0.45% CO
). The software automatically fills in the
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measured zero voltages from all parSYNC® sensors when the system is zeroed prior to a test run (using
the controls in the Zero tab). The span voltages for the test calibration gases are obtained by using the
equipment to test the calibration gases and referencing the span voltage values displayed in the "RAW"
tab. The user manually obtains the span voltages and enters them in the appropriate boxes in the
"Calibration Settings" tab.
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