Hamilton Sundstrand Corporation

Hamilton Space Systems International, Inc.

Kenneth Carney

Catherine Thibaud

Lance R Bartosz

Hsien-Chi W Niu

An air quality sensor includes a detector element array, a processor operatively connected to the detector element array, and a memory. The memory is disposed in communication with the processor and has instructions recorded on the memory that, when read by the processor, cause the processor to execute certain operations including measuring electrical resistance of one of more detector element of the detector element array. A difference is calculated between the measured resistance and a reference resistance, and a determination is made of presence or absence of a contaminant in air communicated to the detector element array from an atmosphere of an aircraft cabin based on the difference between the measured resistance and the reference resistance. Aircraft and methods of monitoring air quality also described.

Air quality sensors and methods of monitoring air quality

A system has at least one sensor and a control for analyzing a signal from the sensor. The sensor is operable to send a signal indicative of a presence of a particular occurrence to the control. The sensor also sends a background signal even without the presence of the particular occurrence. The control evaluates the background signal to identify a need for calibration. A method is also disclosed.

Passive monitoring of sensor calibration status

A sampling device for a substance detection instrument includes

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Rancho Cucamonga, CA, United States of America

Kenneth Carney