Xiangke DRH-ZD-500 thermal insulation material camping mattress thermal resistance thermal conductivity tester

Xiangke DRH-ZD-500 thermal insulation material camping mattress thermal resistance and thermal conductivity tester (protective hot plate method)

The instrument adopts the protective hot plate method, which mainly tests the thermal conductivity and thermal resistance of plastic, glass, fiber, foam, foamed cement, thermal insulation materials, camping mattresses and other materials. Instrument reference standards: GB/10294-2008 (Thermal insulation materials - Determination of steady-state thermal resistance and related characteristics - Protective hot plate method), ISO 8302-1991 Thermal insulation - Determination of steady-state thermal resistance and related characteristics - Protective hot plate method, ASTM-F3340-18 standard test method: The thermal resistance of camping mattresses uses protective hot plate devices.

Performance characteristics:

1. Automatic pressurization system: Computer automatic pressurization, which can test the thermal conductivity under different pressures, is more scientific, data-driven, and reproducible than manual pressurization.

2. Multiple measurement types: In addition to measuring hard boards, various accessories from the company can be selected to measure various special materials. For example: granular materials, bulk materials, soil, etc.

Main technical indicators:

1. Thermal conductivity range: 0.0010~3.000W/mk;

2. Test accuracy: ± 3%;

3. Calorimetric center area: 250 × 250mm (edge length accurate to 0.01mm);

4. Effective testing area: 500 × 500mm; Sample space 800 × 800mm;

5. Hot surface temperature range: room temperature~100 ℃, temperature resolution 0.01 ℃, measurement accuracy 0.05 ℃; The heating of the hot plate adopts a flexible printed circuit board method.

6. Cold noodle temperature range: 0-60 ℃, temperature resolution 0.01 ℃;

7. Computer controlled fully automatic testing, data processing, and generation of inspection reports that can be printed out;

8. It can automatically pressurize and detect the thermal conductivity under different pressure states, with an adjustable pressurization range of 0-1000N and a resolution of 0.1N.

9. Temperature difference between hot and cold plates: The default value is 30 ℃ (commonly used standard temperature difference), and users can also set it themselves.

10. Voltage: 220V, 50Hz

Introduction to measuring devices

The DRH-ZD-500 instrument mainly consists of a hot plate temperature measurement and control system, a calorimetric power measurement and control system, a cold plate temperature measurement and control system, a sample clamping system, and a computer data measurement and control system. The instrument can also be equipped with sample thickness measurement system, pressure measurement system, electric pressurization system, and external thermal environment temperature control system.

The hot plate is composed of a calorimetric plate and a heat protection plate, which is equipped with a calorimetric plate heater (or controlled by a constant temperature bath outside the water circuit), a heat protection plate heater, a temperature protection thermoelectric silicon, and a temperature measurement probe. The heat protection plate is controlled by a high-precision temperature control meter, providing a stable heat protection temperature; The calorimeter plate is heated by a DC regulated power supply controlled by a high-precision temperature control meter, and the calorimeter temperature is controlled according to the temperature difference measurement Thermopile signal. The measured calorimeter power is the heat flow value; The temperature of the hot surface is measured by an embedded temperature measuring probe or an external temperature measuring probe.

There is a water circuit and a temperature measurement probe inside the cold plate, which are connected to the external constant temperature water tank through a pipeline. By utilizing the medium circulation between the external constant temperature tank and the cold plate, a second constant temperature field is formed in the cold plate, providing stable temperature at the cold end face. The temperature of the cold surface is measured by an embedded temperature measurement probe or an external temperature measurement probe. Due to different usage temperatures, there are semiconductor refrigeration temperature controls; Electric heating and temperature control methods.

There are two types of sample clamping devices: manual and automatic. Automatic device composition: 1. The sample thickness measurement device is composed of displacement sensors and digital display instruments, which can detect the thickness of the sample in real-time; 2. The pressure measurement system is composed of a pressure sensor and a digital display instrument, which can detect the sample pressure in real-time; 3. The electric pressurization system consists of a motor, a linear reducer (or stepper motor), an electronic governor, and a control circuit to achieve automatic pressurization and unloading.

The computer system completes data collection, data processing, instrument control, and fully automated testing.

Configuration: including one DRH-ZD-500 testing host, one set of software, and one high-precision constant temperature water tanktypeOne computer (configured according to the contract).