Thermochemical combustible gas detector

Details Thermochemical combustible gas detector Thermochemical combustible gas detector

1976-02-09

1979-08-14

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

340634, 422 96, G01N 2532

Patent

active

041646991

ABSTRACT:
A thermochemical combustible gas detector having a resistor bridge including a thermistor which is sensitive to combustible gases and a thermistor which compensates the effects of unmeasured parameters and components upon the former thermistor. The supply diagonal of the bridge is connected to a power source via a compensating voltage stabilizer having an adjusting link and two amplifier-comparator links one of which is auxiliary. The detector further includes two conventional auxiliary resistors which are interconnected in series and form an additional resistor bridge with the thermistors of the main bridge. The input of the first amplifier-comparator link is connected to the measuring diagonal of the main bridge. The input of the auxiliary amplifier-comparator link is connected either to the measuring diagonal of the additional resistor bridge, or to one of the auxiliary resistors.

REFERENCES:
patent: 2901740 (1959-08-01), Cutsogeorge
patent: 3429178 (1969-02-01), Durbin
patent: 3678489 (1972-07-01), Scherban et al.
patent: 4001758 (1977-01-01), Esper et al.
patent: 4002429 (1977-01-01), Bartovsky

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