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Transpector MPH Operating Manual
1.18 Installing the HPR Calibration Reference (Optional)
Transpector MPH has an optional calibration reference, with a choice of argon or
a standard gas mixture (selected impurities in argon). This calibration reference
provides:
a means to tune the RGA
a reference for adjusting the EM voltage
a reference for tracking the performance of the RGA
A Transpector MPH with the HPR calibration reference adds the following parts to
the standard Transpector MPH shipped items: (see Figure 1-10):
(1) Special extension flange with a 4-VCR fitting (and installed sensor)
(2) Calibration reference
(3) VCR gaskets
(4) HPR valve control cable and solenoid
(5) Calibration reference mounting bracket
(6) Gas connections and hose
Figure 1-10 HPR calibration reference parts