Thermal conductivity calibration instrument 

[Testing items]

DRJZ120A thermal conductivity calibration instrument is the single specimen calibration instruments; it can adjust heat conductivity of various homogeneous plate of insulating materials and poor ability of thermal conductivity of material.

[Applicable standards]

ISO8302,ASTM177,GB/T 10294-2008 Thermal insulation--Determination of steady-state thermal resistance and related properties--Guarded hot plate apparatus

[Features]

1.The samples obtain the clamping force,rely on the hot plate components of gravity fed, at the same time, can also control the pressing force, and keep pressing force constant in the course of the experiment.

2.Balance of heat flow meter is used to detect and control metering heating measurement unit and protection unit and measurement unit and the back protection unit, temperature difference and heat exchange between the leakage on the back edge, thermal control at very low levels, to ensure the high precision of testing results.

3.Cold plate liquid circulation tank adopts the double helix, to ensure the evenness of cold plate surface temperature.And temperature control system of the fluid of cold plate box adopts double pump bypass circulation heating method, makes temperature of the casing liquid fluid uniform, temperature of the liquid flows through pipes has small fluctuations.

4.With high stability, high precision of platinum resistance temperature sensor and the high precision dc power sensors, the data collection results more accurate. Test results repetitive are 0.5% or less.

5.The temperature sensor is detachable type, can be calibrated on a regular basis.

6.Equipment metering heating unit is round, square or circular sample for testing.

7.With the function of Overheating protection.

8.To ensure the accuracy of the instrument testing, all electrical components are all made of imported components.

9.All instrument box body frameworks, the panel made by high quality stainless steel pipe, stainless steel plate, has the fingerprint resistant surface treatment, environmental protection, clean, beautiful, generous, give us a kind of comfortable feeling.

10.The device adopts microcomputer automatic control system, has the test process automatic control, automatic data acquisition and generate reports, intelligent degree is high.

[Technical parameter]

Overall dimensions length x width x height (mm) 1080*30*1880 (mm)

Weight:300(kg)

Specimen sizelength x width x height (mm) :φ300 (mm) or 300×300(mm)

Specimen sizelength x width x height (mm) :10~37.5 (mm)

Determination range of thermal conductivity 0.01~2W/(m•K) 

Cold plate temperature -5℃~90℃

Hot plate temperature:~120℃

Cold plate temperature control stability:0.01℃

Hot plate temperature control stability:0.002℃

Hot plate metering unit heating power control stability: 0.001W

The maximum heating power metering plate:46W

Test repeatability:≤0.5%

Uncertainty 1.22%  k=2 (confidence level 95%)

(In the standard USA National Institute of standard reference material SRM1450d as test sample)

matching power:4.5kW  220V

The test environment temperature fluctuation range: ambient temperature±2℃