A device and a method for measuring and/or monitoring at least one process variable of a medium is provided. The device comprises a sensor unit with a mechanically vibrating unit, at least one reflection unit, a piezoelectric element which is attached to the membrane, and an electronic. The device is designed to excite the mechanically vibrating unit to mechanical vibrations using an excitation signal, to receive the mechanical vibrations of the vibrating unit and convert them into a first reception signal, to emit a transmission signal, and to receive a second reception signal. The electronic unit is designed to determine the at least one process variable of the medium based on the first and/or second reception signal.

A device and a method for measuring and/or monitoring at least one process variable of a medium is provided. The device comprises a sensor unit with a mechanically vibrating unit, at least one reflection unit, a piezoelectric element which is attached to the membrane, and an electronic. The device is designed to excite the mechanically vibrating unit to mechanical vibrations using an excitation signal, to receive the mechanical vibrations of the vibrating unit and convert them into a first reception signal, to emit a transmission signal, and to receive a second reception signal. The electronic unit is designed to determine the at least one process variable of the medium based on the first and/or second reception signal.

A novel thermopile having high sensitivity and reliability at the time of measuring a flow rate of gas in a thermopile sensor is provided. A thermopile sensor includes a thermopile in which pairings of PolySi and a metal film are connected in series on an insulating film, the metal film is connected so as to overlap on the PolySi in each pair, the metal film crosses a gap between the PolySi and the PolySi in a connection portion between pairings, and a gap between the PolySis in a portion where the metal film crosses is wider than a gap between the PolySis in the remaining portion.

A system has a first temperature sensor located at a first location. A second temperature sensor is located at a second location. A control is configured to determine a difference between voltages indicated of a temperature sensed by each of the first and second sensors. A method is also disclosed.

A system for adjusting properties of a seat for a vehicle, may include thermoelement modules configured to have a structure in which a plurality of flexible thermoelements is connected by conductive wires to each other, and mounted in a seat foam pad of the seat; a property adjustment region input unit configured to select a property adjustment region of the seat foam pad; a property adjustment amount input unit configured to input a target property adjustment amount of the seat foam pad; and a controller connected to the thermoelement modules, the property adjustment region input unit and the property adjustment amount input unit, and configured to control an amount of current supplied to some or all of the flexible thermoelements according to output signals from the property adjustment region input unit and the property adjustment amount input unit.

A data collection device and a temperature monitor unit monitors the temperature of a remote structure. The temperature monitor unit has a thermocouple, a communications device assembly having an antenna and a transmitter, a power supply for powering the controller and the communications device, and an enclosure for surrounding the communications device and the power supply with the thermocouple and the antenna extending therethrough. The communications device obtains a temperature from the thermocouple and activates the transmitter to send the temperature to the data collection device through the antenna.

A heat flux temperature sensor probe includes a first mineral-insulated cable portion and a second mineral-insulated cable portion. The first mineral-insulated cable portion has a first metallic sheath, a first plurality of thermocouple conductors extending therein, and an inorganic insulative material insulating the first plurality of thermocouple conductors from one another and from the first metallic sheath. The second mineral-insulated cable portion has a second metallic sheath, a second plurality of thermocouple conductors extending therein, and an inorganic insulative material insulating the second plurality of thermocouple conductors from one another and from the second metallic sheath. A first thermocouple is formed between at least one of the first plurality of thermocouple conductors and one of the second plurality of thermocouple conductors proximate a first end of the second mineral-insulated cable portion. A second thermocouple is formed between at least two of the second plurality of thermocouple conductors proximate a second end of the second mineral-insulated cable. A sheath is operably couped to and connects the first and second mineral insulated cable portions, a portion of an interior of the sheath is filled with a non-conductive material.

A heat flux temperature sensor probe includes a first mineral-insulated cable portion and a second mineral-insulated cable portion. The first mineral-insulated cable portion has a first metallic sheath, a first plurality of thermocouple conductors extending therein, and an inorganic insulative material insulating the first plurality of thermocouple conductors from one another and from the first metallic sheath. The second mineral-insulated cable portion has a second metallic sheath, a second plurality of thermocouple conductors extending therein, and an inorganic insulative material insulating the second plurality of thermocouple conductors from one another and from the second metallic sheath. A first thermocouple is formed between at least one of the first plurality of thermocouple conductors and one of the second plurality of thermocouple conductors proximate a first end of the second mineral-insulated cable portion. A second thermocouple is formed between at least two of the second plurality of thermocouple conductors proximate a second end of the second mineral-insulated cable. A sheath is operably couped to and connects the first and second mineral insulated cable portions, a portion of an interior of the sheath is filled with a non-conductive material.

A sensor system includes a sensor and a plurality of panels connected to each other in a loop around the sensor. A duct is positioned to direct air towards the sensor. A heating element is disposed in the duct. First and second valves are disposed in the duct and spaced from each other along the duct. The first and second valves are selectively actuatable between an open position permitting airflow through the duct and a closed position blocking airflow through the duct. A computer is communicatively coupled to the heating element and the first and second valves. The computer is programmed to, upon determining a first difference between one respective panel temperature and an ambient temperature is greater than a first threshold, actuate the second valve to the closed position and maintain the first valve in the open position. The computer is further programmed to actuate the heating element to a first heating level based on the first difference.

A sensor system includes a sensor and a plurality of panels connected to each other in a loop around the sensor. A duct is positioned to direct air towards the sensor. A heating element is disposed in the duct. First and second valves are disposed in the duct and spaced from each other along the duct. The first and second valves are selectively actuatable between an open position permitting airflow through the duct and a closed position blocking airflow through the duct. A computer is communicatively coupled to the heating element and the first and second valves. The computer is programmed to, upon determining a first difference between one respective panel temperature and an ambient temperature is greater than a first threshold, actuate the second valve to the closed position and maintain the first valve in the open position. The computer is further programmed to actuate the heating element to a first heating level based on the first difference.