The embodied invention is a compact TPW cell design with an upper storage volume that is used to remove contaminants from the TPW cell water. To remove contaminates, the TPW cell is inverted and rotated so that the cell body water completely drains into the upper storage volume through a transfer tube. Then the TPW cell is then rotated to vertical and cooled which transfers the cell body water back into the TPW cell by a sub-boiling process. The water impurities remain in the upper storage volume and the cell body water has been purified of contaminates.

A wading structure health sensing distributed optical fiber calibration system and a method includes a heat insulation barrel, and calibration modules located in the inner ring of the barrel, the calibration module comprises a through-shaft, a first electronic thermometer and a second electronic thermometer, an optical cable to be calibrated is twisted on the through-shaft and is connected to an optical fiber temperature demodulator outside the heat insulation barrel, the first and second electronic thermometers are respectively connected to first and second temperature control meters outside the barrel, a temperature source wire for heating water in the barrel arranged in the wall of the barrel, the temperature source wire connected to a power temperature control meter outside the barrel, and the first temperature control meter connected to cooling and heating devices simultaneously through leads of the first temperature control meter.

A device includes a tank, a motor, and a fluid propulsion device, for example, a propeller that is coupled to the motor. The tank includes a bottom wall and side walls. A first surface of a first side wall forms an obtuse angle with a surface of the bottom wall. The fluid propulsion device is disposed inside the tank opposite the first surface of the first side wall. A first surface of a second side wall forms an obtuse angle with the surface of the bottom wall. Rounded corners may be disposed within the tank where pairs of adjacent side walls meet the bottom wall. Rounded surfaces may be formed where the side walls meet the bottom wall. The structure of the tank enables the propeller to rapidly disperse a fluid throughout the tank.

The invention disclosures a scanning switch for calibration of a temperature metering device and a calibration system and a calibration method thereof, comprising main connecting terminals and sub connecting terminals, main connecting terminals are connected to a standard electrical measuring instrument, sub connecting terminals are connected to a calibrated sensor and a standard sensor, main connecting terminals and sub connecting terminals are conductively connected through an electrical measuring switch, the scanning switch further comprises a temperature controller and a temperature control switch which are electrically connected, the temperature control switch is connected to sub connecting terminals, the temperature controller is connected to a constant temperature source by a solid-state relay and connected to standard sensor or calibrated sensor by sub connecting terminals, the temperature control loops of old system are integrated into scanning switch, temperature control sensor is removed, simultaneously the temperature in constant temperature source is real-time controlled.

A calibration setup for calibrating a temperature sensor includes a temperature calibrator, a temperature measuring unit connected to the temperature sensor, a camera unit configured to detect a measured temperature value and to transmit the measured temperature value to a storage medium in the temperature calibrator. A method of calibrating a temperature sensor using the calibration setup includes heating the temperature sensor to a first calibration temperature; detecting a first temperature value by the camera unit; transmitting the first temperature value from the camera unit to a storage medium in the temperature calibrator; heating the temperature sensor to at least a second calibration temperature; detecting a second temperature value by the camera unit; transmitting the second temperature value from the camera unit to the storage medium; and displaying the detected and stored temperature values on a calibrator indicator display in a respective association with the calibration temperatures.

A device includes a chamber having an interior surface formed from a material that reflects infrared energy. A tank is disposed within the chamber. A bottom wall of the tank is spaced apart from a bottom wall of the chamber, and side walls of the tank are spaced apart from side walls of the chamber. A conduit is formed between the bottom wall of the tank and the bottom wall of the chamber and between the side walls of the tank and the side walls of the chamber. A fan or pump moves air into the conduit past the bottom and side walls of the tank to cool a fluid disposed within the tank. A processor controls a speed at which a motor of the fan or pump rotates based on input received from one or more temperature sensors.

A device providing a temperature control and/or monitoring and a method for use of the device are disclosed. In the disclosed method and device, a controller receives a minimum temperature value and a maximum temperature value of a temperature range to be measured. The controller correlates a known output signal range of a temperature sensor to the temperature range to be measured. Further, the controller receives an output signal from the temperature sensor, and generates a measured temperature value based on the output signal of the temperature sensor.

A device providing a temperature control and/or monitoring and a method for use of the device are disclosed. In the disclosed method and device, a controller receives a minimum temperature value and a maximum temperature value of a temperature range to be measured. The controller correlates a known output signal range of a temperature sensor to the temperature range to be measured. Further, the controller receives an output signal from the temperature sensor, and generates a measured temperature value based on the output signal of the temperature sensor.

A thermal sensor in some embodiments comprises two temperature-sensitive branches, each including a thermal-sensing device, such as one or more bipolar-junction transistors, and a current source for generating a current density in the thermal-sensing device to generate a temperature-dependent signal. The thermal sensor further includes a signal processor configured to multiply the temperature-dependent signal from the branches by respective and different gain factors, and combine the resultant signals to generate an output signal that is substantially proportional to the absolute temperature the thermal sensor is disposed at.

Systems and methods that provide measurement of liquid levels in a container, such as a calibration bath container, may utilize an acoustic transducer subsystem that includes one or more acoustic transducers that are controlled by a controller. The acoustic transducer subsystem emits acoustic signals toward a surface of a liquid in a container, and detects reflected acoustic signals that are reflected from the surface of the liquid. The liquid level sensor utilizes an acoustic waveguide subsystem to allow the acoustic transducer subsystem to be spaced apart from the liquid, which protects the acoustic transducer system another other components from damage due to heat, liquid, and vapor. The acoustic waveguide subsystem also channels the emitted and reflected acoustic signals to prevent substantial scattering of the signals within the container, which greatly improves the accuracy of the liquid level sensor.