The present invention discloses a temperature calibrator, which comprises or has an externally attached inclination angle sensing means. A temperature sensor and an internal battery is applied as well, together with a fan. The temperature calibrator comprises regular heating elements, a processor, and a User Interface. The system measures the inclination angle and internal temperature of the temperature calibrator. If the angle or temperature value or both exceed a certain threshold value, the system is configured to switch off the heating elements immediately, and to show or send a warning indicator or signal to the user or manager of the device via the UI 22, e.g. through a red LED light, a beeping sound or a warning message on the screen of the temperature calibrator or of the remote device.

A Micro Electro-Mechanical System (MEMS) device comprises an evaluator circuit that receives a temperature signal, where the evaluator circuit compares the received temperature signal to a lower threshold value and an upper threshold value, and where the evaluator circuit generates an evaluation signal indicating when the temperature signal is between the lower threshold value and the upper threshold value; and a loading circuit that receives the evaluation signal, where the loading circuit generates a first pre-set output signal indicating when the temperature signal is between the lower threshold value and the upper threshold value, and wherein the loading circuit generates a second pre-set output signal when the temperature signal is not between the lower threshold value and the upper threshold value, such that the MEMS device functions as a 2-wire electronic sense circuit providing both an indication state and deriving power from an external two-wire sense circuit.

A temperature regulation device for food items includes a food pan, a heating device configured to provide regulated heating of the food pan, a temperature sensor configured to detect a temperature of the food pan, and a control system. The control system is configured to control the heating device in response to at least the temperature of the food pan detected by the temperature sensor by providing a gradual warming control mode in response to the temperature sensor detecting the temperature of the food pan below a minimum preset temperature and providing a normal control mode in response to the temperature sensor detecting the temperature of the food pan above the minimum preset temperature.

A temperature regulation device for food items includes a food pan, a heating device configured to provide regulated heating of the food pan, a temperature sensor configured to detect a temperature of the food pan, and a control system. The control system is configured to control the heating device in response to at least the temperature of the food pan detected by the temperature sensor by providing a gradual warming control mode in response to the temperature sensor detecting the temperature of the food pan below a minimum preset temperature and providing a normal control mode in response to the temperature sensor detecting the temperature of the food pan above the minimum preset temperature.

A method of predicting the temperature of a resistive heating element in a heating system is provided. The method includes obtaining resistance characteristics of resistive heating elements and compensating for variations in the resistance characteristics over a temperature regime. The resistance characteristics of the resistive heating element include, but are not limited to, inaccuracies in resistance measurements due to strain-induced resistance variations, variations in resistance due to the rate of cooling, shifts in power output due to exposure to temperature, resistance to temperature relationships, non-monotonic resistance to temperature relationships, system measurement errors, and combinations of resistance characteristics. The method includes interpreting and calibrating resistance characteristics based on a priori measurements and in situ measurements.

A method of predicting the temperature of a resistive heating element in a heating system is provided. The method includes obtaining resistance characteristics of resistive heating elements and compensating for variations in the resistance characteristics over a temperature regime. The resistance characteristics of the resistive heating element include, but are not limited to, inaccuracies in resistance measurements due to strain-induced resistance variations, variations in resistance due to the rate of cooling, shifts in power output due to exposure to temperature, resistance to temperature relationships, non-monotonic resistance to temperature relationships, system measurement errors, and combinations of resistance characteristics. The method includes interpreting and calibrating resistance characteristics based on a priori measurements and in situ measurements.

The present embodiments disclose a method of running an air inlet system upstream of one or more inlet air filters of a device protected by air filtration, wherein the method comprises: regulating the relative air humidity of the inlet air at the one or more inlet air filters in dependence of the inlet air filters differential pressure.

A thermostat device for a motor vehicle cooling system includes a valve, a heat-sensitive component to induce opening of the valve when the temperature of the sensitive component exceeds a temperature threshold, and a heating module controlled by the sensitive component. The heating module delivers at most a maximum heating power. The heating module includes a regulating module to determine a gross useful voltage based on a measured temperature and of a temperature setpoint, and a correcting module including an electrical resistor connected to an electrode. The correcting module controls the heating module either to limit the heating power delivered by the heating module to a heating power strictly lower than the maximum heating power and sufficient to induce complete opening of the valve, or so that the heating module delivers non-zero heating power that is not sufficient to induce opening of the valve.

A thermostat device for a motor vehicle cooling system includes a valve, a heat-sensitive component to induce opening of the valve when the temperature of the sensitive component exceeds a temperature threshold, and a heating module controlled by the sensitive component. The heating module delivers at most a maximum heating power. The heating module includes a regulating module to determine a gross useful voltage based on a measured temperature and of a temperature setpoint, and a correcting module including an electrical resistor connected to an electrode. The correcting module controls the heating module either to limit the heating power delivered by the heating module to a heating power strictly lower than the maximum heating power and sufficient to induce complete opening of the valve, or so that the heating module delivers non-zero heating power that is not sufficient to induce opening of the valve.

A temperature regulation device for warming or maintaining the temperature of food items includes a food pan configured to hold a food item, an induction coil configured to warm the food item via inductive heating of the food pan, a temperature sensor configured to detect a temperature of the food pan, a temperature control system coupled to the induction coil and the temperature sensor. The temperature control system is configured to control the induction coil in response to at least the temperature of the food pan detected by the temperature sensor and initiate a soft start control mode in response to pan placement on the device and detecting the temperature of the food pan below a minimum preset temperature.