GxT Ferret 54 ENGINE DIAGNOSTIC CENTER - Manual (Page 91)

CAL & P.E.F.
In case a state inspector needs to obtain the P.E.F. (propane equivalency factor), this selection
is provided.
Last Calibration NOx 1996ppm
Concentrations CO 4.03%
CO2 11.9%
P.E.F. = 0.482 at Prop 1204ppm
MEASURE CAL GAS
In the case of an inspector performing a calibration confirmation test, select this procedure to
measure the content of the calibration gas applied to the calibration port. Measure for at least
one minute to allow all readings to stabilize.
Prop 1204ppm Sampling Cal Gas
CO 4.03%
CO2 11.9%
O2 00.0% NOx 1996ppm
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