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公开(公告)号：DE68923966D1
公开(公告)日：1995-09-28
申请号：DE68923966
申请日：1989-04-14
Applicant: ANDROS INC
Inventor： ROGERS RAYMOND
Abstract: An arrangement for ensuring the stability of the set point for a gas analyzer is disclosed. The set point control circuit utilizes an amplifier which is alternately switched between a reference voltage and a sensor signal to provide a signal to a processor representing the reference signal and the sensor signal. The processor compares the two signals and adjusts the heater associated with the sensor to provide a stable set point for the gas analyzer. The arrangement eliminates the need for precision resistors within the set point control circuit and therefore significantly reduces the cost of the circuitry.
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公开(公告)号：DE3650600T2
公开(公告)日：1997-07-03
申请号：DE3650600
申请日：1986-10-10
Applicant: ANDROS INC
Inventor： PARNOFF GEORGE , PASSARO ROBERT , ROGERS RAYMOND , WILLIAMS KEVIN
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公开(公告)号：DE3650600D1
公开(公告)日：1997-04-03
申请号：DE3650600
申请日：1986-10-10
Applicant: ANDROS INC
Inventor： PARNOFF GEORGE , PASSARO ROBERT , ROGERS RAYMOND , WILLIAMS KEVIN
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公开(公告)号：DE68923966T2
公开(公告)日：1996-02-29
申请号：DE68923966
申请日：1989-04-14
Applicant: ANDROS INC
Inventor： ROGERS RAYMOND
Abstract: An arrangement for ensuring the stability of the set point for a gas analyzer is disclosed. The set point control circuit utilizes an amplifier which is alternately switched between a reference voltage and a sensor signal to provide a signal to a processor representing the reference signal and the sensor signal. The processor compares the two signals and adjusts the heater associated with the sensor to provide a stable set point for the gas analyzer. The arrangement eliminates the need for precision resistors within the set point control circuit and therefore significantly reduces the cost of the circuitry.
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