DD300 series single specimen thermal conductivity meter

Instrument Description

      Thermal conductivity is an important parameter for measuring the thermal conductivity and insulation performance of heat-resistant materials, and the performance of heat-resistant insulation materials is determined by their thermal conductivity. The thermal conductivity of a substance depends on many factors such as its composition, porosity, water absorption, moisture content, internal structure, and the environment and temperature during thermal conduction. The precise measurement of thermal conductivity is of great significance for environmental engineering, construction engineering, industrial engineering, scientific research, energy conservation, and other fields.

      The DD300F series intelligent thermal conductivity tester developed by our company adopts a single specimen structure and complies with the national standard GB10294-2008 for thermal conductivity measurement using the protective plate method (determination of steady-state thermal resistance and related characteristics of insulation materials). The instrument adopts advanced mechanical structure design and insulation design, electronic circuit system, with automatic thickness measurement function and online pressure detection capability. Through a simple and fast computer interface, the instrument achieves fully automatic control, data acquisition and processing, calculation and display of thermal conductivity, and data printing and output. It has the advantages of fast measurement speed, high accuracy, automation, and environmental protection.

      This instrument can be widely used in the production enterprises of heat-resistant and insulation materials, relevant quality inspection departments and units, universities, research institutes and other scientific research units.

Instrument features

      ① Compliant with GB/T 10294-2008 and international standard ISO 8302-1991

      ② The temperature acquisition module adopts an independently designed chip electronic component and the latest integrated circuit technology, with performance far superior to industrial instruments such as PLC

      ③  Accurate mathematical correction models and calibration techniques make the power loss of the hot plate zero

      ④ The thermal conductivity temperature curve when tested with a reference plate is completely consistent with it

      ⑤ At the same average temperature, there is a linear relationship between the measured power and the temperature difference between the hot and cold plates

      ⑥ High precision online testing device for specimen thickness, eliminating the need for manual thickness measurement

      ⑦  Automatic specimen clamping device based on pneumatic principle

      ⑧ Measurement and control software based on LabView, fully functional and easy to operate

      ⑨ The test results are independent of the sample thickness, and the results of the same sample with different thicknesses are consistent

      ⑩ Automatically determine whether the steady-state conditions are met, with a single measurement time of only 60 minutes

Technical indicators 

Power supply voltage: AC 220V ± 5%                                                                   

Power: 1.0-2.0kW

Thermal conductivity measurement:

Measurement range: 0.001-2.2 W/(m · K)

Repeatability: ± 1.0%                                                                          

Accuracy: ± 2.5%

Temperature measurement:

Temperature range (varies by model):

DD300F type: Cold plate: 35-95 ℃, Hot plate: 35-99.9 ℃         

DD300F-D0 type: Cold plate: 0-95 ℃, Hot plate: 35-99.9 ℃

DD300F-D15 type: Cold plate: -15~95 ℃, Hot plate: 0~99.9 ℃

DD300F-D30 type: Cold plate: -30~95 ℃, Hot plate: -10~99.9 ℃

Temperature resolution: 0.01 ℃                                            

Temperature accuracy: 0.1 ℃

Single measurement time: ≤ 60 minutes (fastest ≤ 40 minutes)
Thickness measurement:

Resolution: 0.05 mm                                                                            

Repeatability: 0.1mm  

Pressure measurement:

Resolution: 0.001kPa                                                                          

Repeatability: 0.05kPa

Environmental conditions:

Room temperature: 22 ± 3 ℃                                                                            

Humidity: 20-60% RH

Requirements for flat test specimens:

Standard size: 300mm × 300mm                                                       

Thickness: 5-50mm

Flatness:<0.5mm                                                                       

Hardness: Suitable for various hard and soft materials

Dimensions: 1200 × 600 × 1380 mm

Weight: Approximately 120kg