Main Structure of Thermal Conductivity Meter

The thermal conductivity meter uses a dual specimen measurement device, where the specimen to be tested is placed vertically between two parallel plates that maintain a constant temperature. In a stable temperature state, the central measurement area of the specimen has a constant heat flow. At this time, the thermoelectric potential output from the thermocouples of the hot and cold plates and the surface temperature values are measured to calculate the thermal resistance R value at any average temperature. Based on the thickness of the specimen, the thermal conductivity can be accurately calculated. 1. The main chassis adopts a modular design, making installation and debugging convenient, with a novel and beautiful appearance. 2. The key components of the dual specimen measurement device use high-quality polymer materials on the surface of the hot and cold plates, which have excellent thermal conductivity, flexibility, and wear resistance, allowing for close contact with the specimen, thus improving testing accuracy. 3. The cold unit is equipped with a cylinder clamping device that can adjust the air pressure value of the pneumatic system, strictly adhering to the standard requirement of not exceeding 2.5/kpa. 4. The cold unit uses direct cooling side plates, and the unit is equipped with a temperature adjustment device that can quickly stabilize the temperature. 5. The refrigeration system uses an imported fully enclosed air-cooled refrigeration compressor unit, which operates with low noise, good cooling effect, and long service life. 6. The industrial design of the cold unit and refrigeration system allows for fast cooling speed, uniform cooling capacity, and good cooling effect, significantly outperforming water cooling methods. 7. The computer automatically detects and controls, completing the detection work automatically, calculating data results, and outputting reports automatically. The thermal conductivity meter mainly consists of the following parts: 1. Control box: The box is composed of two parts, with manual buttons on the left side of the upper box, the dual specimen measurement device installed inside, and the refrigeration system and pneumatic transmission control system installed in the lower box. 2. Microcomputer control system: Composed of a high-configured computer and printer, it completes functions such as detection signal acquisition, processing, temperature control, time control calculation, and report printing. 3. Dual specimen measurement device: Composed of a heating unit and two cold units, where the cold units can automatically adjust their spatial position according to the different thicknesses of the specimens via the transmission system. 4. The refrigeration system adopts a direct cooling method with cooling side plates.

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