Beijing Const Instruments Technology Inc.

Beijing Const Instrument Technology Inc.

Chunying Zhang

Shichun Zhao

Hongjun Gao

Gang Wang

Jianjun Lin

Wei Ji

Xuecan Li

A flow guiding and heat dissipating type dry block temperature calibrator, which belongs to the temperature calibration field. The temperature calibrator includes a furnace body located in a housing and at least one air flow generating device. The air flow generating device is on one side or at the periphery of the furnace body, and is one or a combination of a gas passage, a flow guiding fan, an air pump and a blower. The air flow generated by the air flow generating device is blown toward a handle of a device being tested that is inserted in the furnace body, such that the handle is cooled, thereby preventing the sensor inside the handle from failing due to high temperature, facilitating the heat dissipation of the internal electronic components of the instrument itself, and extending the service life of the temperature calibrator.

Flow guiding and heat dissipating type dry block temperature calibrator

A method for calibrating a short temperature measuring device using a dry body temperature calibrator; wherein a heat soaking block is placed in the furnace of the dry body temperature calibrator, and two temperature measuring holes are in the heat soaking block, the bottom of the furnace includes a temperature control element. This method includes electrically connecting the first standard temperature sensor to the temperature control element through the measuring module and the control module sequentially to form a closed-loop for temperature feedback control, accurately controlling the temperature of the temperature measuring hole, and calculating the temperature difference between the temperature sensor to be calibrated and the standard temperature sensor in the two temperature measuring holes respectively. Thus quick calculation for the actual temperature of the temperature measuring device to be calibrated and quick calibration for the accuracy of the temperature measuring device to be calibrated can be achieved.

Method for calibrating short temperature measuring device using dry body temperature calibrator

A method and a device for detecting the switching value of a pressure switch. The device comprises: a pressure generator in communication with a pressure switch by means of pressure piping, a pressure control element, a pressure sensor, and a controller provided with a data processing unit. The pressure sensor is installed on the pressure piping and is electrically connected to the controller. The pressure control element is electrically connected to the pressure generator to control the pressure generator, and is electrically connected to the controller. The pressure sensor transfers the pressure change of the pressure piping to the controller in real time, the data processing unit acquires the value of the pressure change and generates a control instruction according to a preset pressure change rule, and the pressure control element controls the pressure generator to change the pressure within the piping. The device and the method are used to complete the detection of the switching value of a pressure switch, fast detection is achieved, the detection accuracy is improved, the repeatability of the detection result is good, the manual operation cost is reduced and the operation is reliable.

Method and device for detecting switching value of pressure switch

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Beijing, China

Chunying Zhang