DRH series plate thermal conductivity tester (hot plate method)
I. overview:
The thermal conductivity of materials is an important parameter to study the thermophysical properties of materials. This series of instruments adopt the principle of hot plate method, which can meet the requirements of high precision test for the material thermal conductivity. Instrument: Reference Standard Test Method for thermal conductivity of plastics GB/T3392 "," GB/T3139, GHP thermal (test method for thermal conductivity of fiber reinforced plastics) (testing method for thermal conductivity of glass steel (GB/10294), the determination of guarded hot plate method of insulation material of steady-state thermal resistance and related properties). The main test plastic, glass, fiber, foam, powder and other materials. Widely used in Colleges and universities, scientific research units, quality inspection and production enterprises and other departments.
Two, the main technical performance
1, the thermal conductivity range: 0.015 ~ 2w/m DRH-II: K;
DRH-300, DRH-400: 0.010 ~ 2w/m / K,

DRH-600: 0.010 ~ 2w/m / K;
2, accuracy: less than 3%;
3, hot surface temperature range: room temperature to 95 DEG C, resolution of 0.01 degrees C.
4, the surface temperature range: 0 to 60 DEG C, resolution 0.01 C, the constant temperature water tank control.
5, power: 220V/50HZ; power is less than 2KW.
6, calorimetric power supply: voltage 0-30V, resolution 0.0001V; current 0-3A, resolution 0.0001A.
7, the computer automatic test, and realize the data printout.
8, sample size requirements:
DRH-III 200 * 200 * (5-20) (mm);
DRH-300 300 * 300 * (10-50) (mm);
DRH-400 400 * 400 * (10-80) (mm);
DRH-600 600 * 600 * (10-100) (mm);
Three: instrument device profile
The instrument is composed of high precision regulated power supply, temperature measuring instrument, central heating plate heater, hot plate heater, constant temperature water tank and computer testing system.
1, the test head: hot plate, hot plate, cold plate.
2, heating system: hot plate temperature heater and metering power heater.
3, cold plate temperature control.
4, temperature measurement system: the use of digital high-precision instrument, to ensure its accuracy and stability, and achieve zero internal compensation.
5, metering power using high-precision power supply heating, precision is better than 0.1%.
6, computer testing components: computers, communications components and testing software

DRH-ZD  series specifications have automatic pressurization and automatic thickness measurement functions to detect the thermal conductivity and thermal resistance under different pressure conditions. It is very suitable for materials with compressibility:

a. The high-precision displacement sensor is used and connected to the computer for automatic thickness measurement. The measurement range is 0-50mm and the resolution is 0.01mm;

b. It can automatically pressurize and detect the thermal conductivity under different pressure conditions. The pressurization range is adjustable from 0 to 1000N and the resolution is 0.1N.

Configuration: including one DRH test host, one set of software, one high-precision constant temperature water tank, and one brand desktop computer (configured according to the contract).