Price of Beijing Thermal Conductivity Tester

1Price of Beijing Thermal Conductivity TesterProduct Introduction:

l、 Using specially designed computer software with * functions and a good human-machine interface. Through software, functions such as data collection, digital display, full curve display, automatic data processing, data storage, report generation, and printing can be completed;

2. The system has a high degree of automation in measurement, accurate measurement data, short measurement time, and can generally complete a measurement within a few hours;

3. Adopting high-precision digital temperature sensors with high temperature measurement accuracy;

4. Adopting intelligent control algorithms, the temperature control effect is good;

5. The product has a novel appearance and compact structure;

The thermal conductivity tester can be widely used in the production enterprises of heat-resistant and insulation materials, relevant quality inspection departments and units, universities, and research institutes.

The applicable standards are:

GB10294-2008 "Determination of Steady State Thermal Resistance and Related Characteristics of Thermal Insulation Materials - Protective Hot Plate Method".

IIPrice of Beijing Thermal Conductivity Testertechnical indicators

（1） Thermal conductivity measurement

Measurement range: 0.01~1.50W/(m * K)

Measurement error: ± 3%

Measurement repeatability: ± 1%

（2） Temperature measurement

Measurement range: 090 ℃

Measurement accuracy: 0.1 ℃

（3） Measurement conditions

1. Cold plate temperature: Without using refrigeration equipment, the cold plate temperature should be at least 10 ℃ higher than the ambient temperature. By using refrigeration equipment, the low temperature of the cold plate can reach 10 ℃. The maximum temperature of the cold plate should be less than 70 ℃.

2. Hot plate and protective plate temperature: The low temperature should be at least 10 ℃ higher than the cold plate temperature. The maximum temperature should be less than 90 ℃. Temperature difference between hot and cold plates: It is recommended to use 20 ℃, and users can also set it themselves.

（4） Environmental conditions required for thermal conductivity tester

1. Room temperature: 2228 ℃, it is recommended to use the standard temperature of 25 ℃.

2. Humidity: 20-80% RH, it is recommended to use 4060% RH.

3. Power supply voltage: AC 220V ± 10%, 1.5kw.

（5） Test piece requirements

1. Standard thickness: 25mm, range 25-27mm

2. Standard size: 300mm x 300mm.

3. Flatness: less than 0.1%.

4. Hardness: Various hard materials are acceptable. For soft materials, care should be taken not to press them too tightly to avoid errors caused by thickness changes. After selecting the sample box packaging for granular materials, conduct testing.

（6） Equipment host size

Approximately 1100 * 850 * 1700mm (length * width * height)

3、 System architecture

The thermal conductivity detector has high integration and good intelligence. The system mainly consists of the following parts:

1. Experimental setup: The system adopts a dual specimen protection hot plate measurement device. Among them, there are mainly heating metering units, heating protection units, and cooling units. The heating part is composed of thin electric heating plates, which are heated by an automatically adjusted DC power supply,

Has good heating uniformity. The cooling unit adopts the method of water circulation compressor refrigeration, equipped with a refrigeration compressor unit and a water circulation system.

2. Clamping device: Pneumatic clamping is used, and the upper and lower limits of clamping force can be manually adjusted. During the working process, the clamping force is automatically controlled by the program within the set range. There are clamping and releasing operation buttons on the panel, divided into left and right parts. Note that the pneumatic system requires an external air pump for operation, and its power and air interface are located on the side of the chassis.

3. Circuit section: used for signal acquisition and control of various parts of the system.

4. Chassis: Modular chassis with compact structure.

5. Computer: The upper computer software used to run the thermal conductivity tester. Complete certain functions by connecting to the device through a USB port cable.

4、 Operation Guide

（1） Preparation work

1. Prepare the air pump and connect the power supply.

2. Connect the air duct of the air pump to the "air inlet" interface on the side of the chassis and adjust the air inlet pressure.

3. Connect the device to the computer using a USB cable, with one end connected to the computer's USB and the other end connected to the motherboard.

4. Provide power to the device.

（2） Experimental steps

l、 Connect the device power supply.

2. Select the specimens that meet the requirements and place them in the testing device. Clamp or release the specimens by operating the buttons on the front panel of the chassis.

3. Open the computer, run the software, and then you can proceed with the experiment.

（3） Software operation

1. After the software runs:

Software interface introduction:

Various functional operation menus and shortcut keys

Online indication and power on indication

When the power is turned on, the lower computer is powered on

Refrigeration on/off

Start up test

Reset, stop, test, clear data, start again

Experimental data shows that

Working parameter settings: The settings in the working parameters are shown in the following figure:

Hot plate temperature: The constant temperature of the hot plate during the test must be filled in and must be at least 10 ℃ higher than that of the cold plate.

Cold plate temperature: The constant temperature of the cold plate during the test, and it is recommended that the cold plate temperature be higher than room temperature.

System parameter setting window:

Set the parameters for the operation of the thermal conductivity tester system

① Temperature variation: a condition for determining system stability. When the temperature difference between the hot and cold plates fluctuates less than the temperature change value, it is considered that the system has stabilized.

② Sampling quantity: a condition for determining system stability.

③ Proportional coefficient: Instrument constant K. Thermal conductivity result=Thermal conductivity measurement result x K.

④ Refrigeration can only be started when the temperature of the cold plate in the test parameters is lower than the set value, otherwise the refrigeration system will not be able to start.

Revise parameter settings:

Correct temperature deviation, calibrate voltage and current

The experimental results display window:

Experimental Procedure:

Firstly, press the "Power" button on the software interface to power up the system.

2. Start the experiment: After setting the test parameters correctly, click the start button and the system will start running automatically.

After the experiment is completed, the instrument will automatically stop.

5、 Quality Assurance

Within one year from the official delivery date of the thermal conductivity tester, the supplier shall provide timely and free maintenance services for any malfunctions that occur in the product. Timely and free replacement of all types of parts damaged by non-human factors. If there are any problems with the product outside the warranty period, the supplier shall promptly provide service to the manufacturer to help troubleshoot the product.

6、 Confidentiality of Technical Intelligence and Information

This technical solution belongs to our company's technical information, and the user shall assume confidentiality obligations for the technical intelligence and information provided by us. Regardless of whether this solution is adopted or not, this clause shall remain valid for a long time;

We should also assume confidentiality obligations for the technical intelligence and information provided by users.