China Wholesale Air Heat Ratio Manufacturers – LEAT-4 Thermal Conductivity Measurement Apparatus – Labor

Main technical features:
1. It adopts isolated low-voltage heating, which is safe and convenient to use;
2. Using national standard thermocouple to measure temperature and Teflon flexible protection tube, the thermocouple is not easy to break;
3. The thermoelectric potential is measured by high internal resistance, high precision, low drift amplifier and three and a half digital voltmeter;
4. PID temperature control heating is used to stabilize the temperature of the heating copper plate and improve the accuracy of the experiment.

Main technical parameters:
1. Digital voltmeter: 3.5 bit display, range 0 ~ 20mV, measurement accuracy: 0.1% + 2 words;
2. Digital stopwatch: 5-digit stopwatch with a minimum resolution of 0.01s;
3. Temperature control range of temperature controller: room temperature ~ 120 ℃;
4. Heating voltage: high end ac36v, low end ac25v, heating power about 100W;
5. Heat dissipation copper plate: radius 65mm, thickness 7mm, mass 810g;
6. Test materials: duralumin, silicone rubber, rubber board, air, etc.
7. The thermocouple freezing point compensation circuit can be added to save the trouble of using ice water mixture;
8. Other temperature sensors can be used to measure the temperature, such as PT100, AD590, etc.