TCDR-300 Flat Plate Thermal Conductivity Tester

1、 Overview:

The TCDR-300 thermal conductivity tester is a new type of testing equipment designed according to GB10294-2008 ≤ Measurement of steady-state thermal resistance and related characteristics of insulation materials using the protective hot plate method ≥. Used to measure the thermal conductivity of various homogeneous plate shaped insulation materials and non good thermal conductivity materials. The measuring instrument adopts a microcomputer automatic control system with a high degree of intelligence, making it an ideal choice for conducting such testing projects in China at present.

 

2、 Testing items:

Used to measure the thermal conductivity of various homogeneous plate shaped insulation materials and non good thermal conductivity materials.

3、 Principle:

Under steady-state conditions, within the central measuring area of the protective hot plate device, a one-dimensional constant heat flow is established in a uniform plate-like specimen with parallel surfaces, similar to an infinite plate bounded by two parallel uniformly heated plates.

4、 According to the standard:

GB10294-2008 ≤ Determination of steady-state thermal resistance and related characteristics of insulation materials - Protective hot plate method ≥

5、 Test device structure:

Adopting the double specimen protection plate method (GB10294-2008), it consists of a microcomputer automatic control system, a metering heating unit, a cold plate unit, a protection unit, an external protection unit, a measurement system, a clamping system, a refrigeration mechanism, etc.

1. Microcomputer automatic control system:

The computer outputs signals through I/O and D/A conversion to control the corresponding execution components, achieving functions such as temperature control, calculation, temperature acquisition, printing test reports, and displaying process curves. The human-machine dialogue window displays temperature values on all sides and has a self diagnostic function.

2. Measurement heating unit:

Using aluminum plate as the heating panel, due to its high thermal conductivity, makes the surface temperature of the heating plate more uniform and has less thermal inertia, which makes the measurement results more accurate.

3. Cold plate unit:

Using a constant temperature water tank to control the temperature of two cold plates, the temperature of the cold plates can be set and automatically controlled by a microcomputer, which is conducive to controlling the temperature difference between the two sides to be similar.

4. Protection unit:

Using the same panel material as the metering heating unit, the temperature difference on both sides of the gap is precisely controlled to reduce testing errors.

5. External protection unit:

Using a protective sleeve made of cork as the external protective unit makes the experimental environment conditions more stable, which is beneficial for improving testing accuracy.

6. Measurement system:

Using the more stable Dallas 18B20 digital temperature sensor and high-precision DC power sensor, the data collection results are more accurate.

7. Compression system:

Using pneumatic technology, the test piece is automatically compressed using a cylinder, without the need for manual adjustment of the clamping force, making the clamping of the test piece very convenient.

8. Refrigeration mechanism:

It can quickly reduce the temperature of the cold plate and detect the average temperature of the specimen below room temperature, making the detection range larger and not affected by environmental temperature.

 

 

Main technical parameters

 

Equipped with power 3KW 220V

Test repeatability ≤ 1%

Test accuracy ≤ 3%. There should be no corrosive media in the environment, and attention should be paid to the good ventilation of the electrical control box.

Hot plate temperature ≤ 120 ℃

Cold plate temperature 5 ℃ -90 ℃

Measurement range of thermal conductivity: 0.01-2W (m.k)

Test piece thickness ≤ 60mm

Sample size measurement 150 * 150mm, protection 300 * 300mm

External dimensions 1220mm * 750mm * 1730mm