Therm-o-disc, Incorporated

Jared Starling

Edward John Blok

Jeffrey A West

Donald E Donnelly

Prasad S Khadkikar

Praveen C Ramamurthy

Blase S Amadio

Donald G Cunitz

Robert Sterken

Charles L Volz

A sensor assembly and a refrigerant sensing system for air conditioning systems can include a sensor controller, a sensor electrically connected to the sensor controller and configured to output sensor data to the sensor controller, and a housing having an interior space enclosing the sensor controller and the sensor. The housing includes a first end and a second end and a barrier disposed between the first end and the second end sealingly separating the interior space. The first end supports the sensor and includes a plurality of openings exposing the sensor to an external environment. The second end supports the sensor controller and substantially prevents the sensor controller from being exposed to the external environment.

Sensor assembly and refrigerant sensing system

The present disclosure relates to a composition for sensor films used for detecting chemical analytes within sensors, such as polymer-absorption chemiresistors (i.e., conductometric sensors). The present disclosure provides robust sensor film compositions that have low resistance, high conductivity, and greater temperature stability and sensitivity to chemical analytes, as well as methods of making these sensor films. Sensor film compositions according to the present disclosure include a matrix having a polymer resin comprising siloxane and a plurality of conductive particles including at least two distinct species.

Vapor sensor and materials therefor

A chemiresistor sensor system that compensates for changes in resistance caused by changes in ambient temperature, thereby increasing the accuracy of the sensor system's ability to detect target analytes. The sensor system generally includes a first resistor, a second resistor, and a load regulator or switch that is sensitive to changes in ambient temperature. At least one of the first resistor and the second resistor is a sensing element having a resistance that changes in response to the presence of one or more of the analytes. The switch manages an electrical load across the first resistor and the second resistor. The switch prevents passage of the electrical load across the first and/or second resistor when the ambient temperature is at a first value. The switch permits passage of the electrical load across the first and/or second resistor when the ambient temperature is at a second value.

Temperature compensated vapor sensor

A PTC circuit protection device to protect electronic devices against excessive temperatures and electrical currents. The device comprises a polymeric resistor element, a first electrode, and a second electrode. The polymeric resistor element changes resistance in response to temperature changes. The resistor element has an upper surface and a lower surface. The first electrode is in electrical contact with both the upper surface and the lower surface. The second electrode is in electrical contact with both the upper surface and the lower surface. The circuit protection device has a first effective area of resistance and a second effective area of resistance that is electrically in parallel with the first effective area.

PTC circuit protector having parallel areas of effective resistance

A chemiresistor sensor probe for detecting target analytes. The probe includes a body having a first control surface and a second control surface recessed within the first. A sensor film comprises numerous conductive particles disposed upon the second surface. The film swells upon absorbing one or more analytes for which it has an affinity, thus causing the conductive particles to become more dispersed and increasing the resistance between the particles. The thickness of the film is equal to the distance between the first surface and the second surface, thus permitting the thickness to be controlled by varying the distance between the control surfaces. The robustness of the sensor probe is enhanced by placing a porous or mesh electrode along with, or in place of, a chemical binding agent between the film and the terminals. The robustness is also improved by placing a diode in series with the sensor circuit.

Growing community of inventors

Mansfield, OH, United States of America

Jared Starling