Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1986-09-11
1988-02-23
Levy, Stewart J.
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
G01N 2700
Patent
active
047262168
ABSTRACT:
A sensitivity-calibration circuit for an HC analyzer includes a scale factor adjuster for setting a scale factor in the analyzer for determining an n-hexane reduced gas concentration value of propane gas used during sensitivity-calibration of the analyzer and a sensitivity adjuster for adjusting the sensitivity of the analyzer and a switching means for switching the circuit between a first calibration state and a second measurement state.
REFERENCES:
patent: 3975947 (1976-08-01), Kruishoop
patent: 4032856 (1977-06-01), Goldner
patent: 4348732 (1982-09-01), Kreft
patent: 4447780 (1984-05-01), Youmans et al.
patent: 4482251 (1984-11-01), Saylor
patent: 4494399 (1985-01-01), Youngman
Kihara Nobutaka
Kohsaka Hiroji
Kojima Kennosuke
Nakajima Yoshiyuki
Horiba Ltd.
Levy Stewart J.
Raevis Robert R.
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