Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1976-12-17
1978-11-14
Myracle, Jerry W.
Measuring and testing
Gas analysis
Moisture content or vapor pressure
G01K 716
Patent
active
041250230
ABSTRACT:
A temperature-measuring apparatus which comprises a first series circuit formed of first and second resistor elements connected between first and second power supply terminals; a second series circuit including a third resistor element connected to the first power supply terminal, a thermosensitive resistor which is connected to the second power supply terminal and whose resistance varies with temperature, a standard resistor having an equal resistance to that which the thermo-sensitive resistor indicates at a referential temperature, and a switching element for connecting the third resistor element selectively to the thermo-sensitive resistor or standard resistor; and analog-digital converter which is impressed with voltage occurring between the junction of the first and second resistor elements and the junction of the third resistor and thermo-sensitive resistor or standard resistor and makes counts corresponding to the measured resistance of the thermo-sensitive resistor and that of the standard resistor; first and second registers for storing counts delivered from the analog-digital converter which corresponds to the measured resistance of the thermo-sensitive resistor and that of the standard resistor; a third register for storing a count corresponding to the referential temperature; a subtractor for subtracting the contents of the second register from those of the first register; and an adder for adding together an output count from the subtractor and a count denoting the contents of the third register.
REFERENCES:
patent: 2938385 (1960-05-01), Mack et al.
patent: 3060379 (1962-10-01), Osvold
patent: 3875503 (1975-04-01), Hayashi
patent: 3913096 (1975-10-01), Veszi
patent: 3915003 (1975-10-01), Adams
patent: 4007832 (1977-02-01), Paull et al.
Abe Yukito
Amemiya Hiroshi
Myracle Jerry W.
Tokyo Shibaura Electric Co. Ltd.
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