Various dry well temperature calibration systems, as well as other temperature control systems, are disclosed. The system can include a well configured to receive a unit under test, a heater configured to heat the well, and a temperature sensor configured to detect a temperature of the well. The system can include a helical airflow groove around the well. A venturi pump unit can be in fluid communication with the airflow groove. The venturi pump unit can be configured to draw a flow of air through the airflow groove, thereby cooling the well.

An ultra-thin film wireless label can include a temperature sensor. The wireless label can be attached to an object, and the wireless label can be used as a temperature monitoring device. The wireless label can have a stacked structure laying the temperature sensor to have efficient thermal contact with the object, while being relatively insulated from the environment via an insulating layer. The temperature sensor can be calibrated, and the calibration parameters can be stored and later used to generate accurate temperature readings.

A test device and method of this disclosure maintain stable bath temperature of a calibration bath. The test device includes a base that introduces vortex flow of liquids from the calibration bath into a hollow interior of a cylinder containing a reference and a test thermometer, the vortex flow of liquids then exiting a cap at the upper end of the cylinder and returning to the bath. The test device is partially surrounded by the liquids of the calibration bath. In some embodiments, the calibration bath is a circulating calibration bath. The test device and method of its use maintain bath temperature within at least 0.01 F. (0.0056 C.) about a predetermined bath working temperature.

A temperature-controlled calibration source for thermal imaging that provides for extremely inexpensive, mass producible, field deployable thermal calibration in specific, relatively low temperature ranges, and in particular temperatures near nominal human body temperature. A calibration source suitable for such applications may be implemented primarily as a suitable designed Printed Circuit Board (PCB), packaged in a thermally isolating housing and powered of commonly available power sources such as USB chargers.

An apparatus for testing a thermocouple contact comprises a first nondestructive connector removably connected to a known contact of a thermocouple contact assembly and a second nondestructive connector removably connected to an unknown contact of the thermocouple assembly. A processing device is electrically connected to the first nondestructive connector and the second nondestructive connector. Responsive to connection of the thermocouple contact assembly between the first nondestructive connector and the second nondestructive connector and application of a heat source to the thermocouple contact assembly a Seebeck voltage is measured by the processing device.

A thermal measurement system enables high-resolution sub-surface temperature monitoring during additive manufacturing processes through machine learning demodulation of chirped fiber Bragg grating (C-FBG) sensors. An optical sensing subsystem includes a C-FBG sensor that encodes spatial temperature information in wavelength for high-temperature operation. A neural network model transforms complex reflection spectra into spatial temperature profiles with micrometer-scale resolution, overcoming limitations of traditional demodulation methods. A calibration subsystem generates synchronized spectral and thermal imaging data for training the neural network using controlled thermal profiles. The system captures steep thermal gradients and rapid cooling rates during laser powder bed fusion operations. A fiber embedding technique maintains the sensor in a strain-free condition at controlled sub-surface depths. The integration of high-temperature C-FBG sensors with machine learning signal processing achieves significant improvement in spatial resolution compared to traditional fiber optic thermal measurement approaches.

A test device and method of this disclosure maintain stable bath temperature of a calibration bath. The test device includes a base that introduces vortex flow of liquids from the calibration bath into a hollow interior of a cylinder containing a reference and a test thermometer, the vortex flow of liquids then exiting a cap at the upper end of the cylinder and returning to the bath. The test device is partially surrounded by the liquids of the calibration bath. In some embodiments, the calibration bath is a circulating calibration bath. The test device and method of its use maintain bath temperature within at least 0.01 F. (0.0056 C.) about a predetermined bath working temperature.

A method of operating a temperature calibrator for calibrating a temperature sensor having a calibration block into which the temperature sensor is introduced and having a heating means by which the calibration block is heated and having a cooling unit by which the calibration block is cooled and an actuator by which the cooling unit is brought into thermal conductivity contact with the calibration block during cooling and is spatially separated from the calibration block during heating while forming an air gap. The invention further relates to a temperature calibrator is also disclosed.

Various embodiments disclosed herein provide for an improved method for sensing the temperature at an individual sensor location that is both small in size, and the temperature can be determined independent of the temperature of the Temperature Management Controller (TMC). The method includes determining the temperature at the temperature sensing element or circuit based on a function of two voltages measured at the temperature sensing element. In a first embodiment, the two voltages are measured at two transistors that are each being supplied with the same current. In another embodiment, the temperature sensing element includes a single transistor that is supplied with two different currents at different times, and the voltages are measured at the same current, with each of the two voltages being measured based on the two currents being supplied to the transistor.

The present invention patent application, belonging to the field of Instrumentation and industrial metrology, comprises a dry block temperature calibrator (6), which has a block (7), and a closed system comprising: two heat sinks (1) using water to cool the Peltier element (2), and consequently the cooling of the metal block (3) used to test/calibrate temperature sensors, a pump (24) that directs the water flow to the high-efficiency radiator (5), and then the water flow is recirculated to the heat sinks (1) concluding the closed system.