Calibration device for gas sensors

Details Calibration device for gas sensors Calibration device for gas sensors

2006-07-11

2006-07-11

Patel, Harshad (Department: 2855)

Measuring and testing

Instrument proving or calibrating

Gas or liquid analyzer

C073S001060

Reexamination Certificate

active

07073368

ABSTRACT:
A gas sensor includes a gas detector, a reference gas generator, and a circuit. The reference gas generator includes a heater and a gas releasing material. The gas releasing material is in proximity to the heater such that, when the heater is energized during calibration, the gas releasing material releases an overpressure of a reference gas to the gas detector and such that, when the heater is not energized, the gas releasing material releases no substantial overpressure of the reference gas to the gas detector. The circuit energizes the heater during calibration and is responsive to an output of the gas detector during the period when the gas detector is provided the reference gas so as to calibrate the gas sensor.

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Pinkerton et al. “Bottling the Hydrogen Genie”, Feb./Mar. 2004, The Industrial Physicist, vol. 10, No. 1, pp. 20-23.

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