QTM-500 Rapid Thermal Conductivity Tester/Thermal Conductivity Meter

QTM-500 Rapid Thermal Conductivity Tester/Thermal Conductivity Meter
Quick Thermal Conductivity Meter

Thermal conductivity: The amount of heat transferred per unit area of a material along the direction of heat flux at a unit temperature gradient per unit time. The unit is watts per meter Kelvin [W/(m · K)].
Local heating is carried out using a linear electrical conductor (hot wire) buried in the length direction of the sample, with the hot wire carrying a known constant power current, that is, the power remains constant in time and the length direction of the sample. The thermal conductivity can be calculated based on the power of the hot wire and the temperature at two known time intervals after heating. The temperature rise as a function of time is the thermal conductivity of the tested sample.

QTM-500 Rapid Thermal Conductivity Tester/Thermal Conductivity Tester is suitable for:

Various industrial materials, insulation materials, building materials, refractory materials, process materials, ceramic materials, food, etc.
GB/T 50538-2010 Technical Standard for Anti corrosion and Thermal Insulation Layer of Buried Steel Pipelines (Appendix C Method for Measuring Thermal Conductivity).
GB/T 5990-2006 Test Method for Thermal Conductivity of Refractory Materials (Hot Wire Method).
GB/T 11205-2009 Determination of Thermal Conductivity of Rubber - Hot Wire Method.
GB/T 10297-1998 Determination of thermal conductivity of non-metallic solid materials - Hot wire method.
SY/T 0415-1996 Technical Standard for Rigid Polyurethane Foam Anti corrosion and Thermal Insulation Layer of Buried Steel Pipeline (Appendix C: Rapid Thermal Conductivity Tester).
Journal of Geotechnical Engineering - Determination of Thermal Conductivity Characteristics of Typical Sand, Clay, and Rock Using a Room Temperature Thermal Conductivity Tester.
Note: QTM-D2 and QTM-D3 models have been discontinued, and the replacement model is QTM-500.

QTM-500 Rapid Thermal Conductivity Tester/Main Features of Thermal Conductivity Tester:

1. Quickly and easily measure the thermal conductivity of various types of samples.
2. Depending on the type of sample and temperature measurement, appropriate sensors (probes) can be selected.
3. LCD display screen, which can directly observe the temperature rise curve during measurement.
4. The heating curve is displayed in logarithmic time, which confirms the linearity of the measured values.
5. Automatically determine the appropriate heating current value for the sample (when using PD-11 sensor).
6. After automatically determining that the sample temperature is stable, fully automatic measurement is carried out.
7. Can measure thin film or paper samples (optional SOFT-QTM needs to be purchased separately).

QTM-500 Rapid Thermal Conductivity Tester/Thermal Conductivity Tester Technical Parameters:

Model and Name: QTM-500 Rapid Thermal Conductivity Tester.
Measurement method: Hot wire method (hot wire method).
Measurement range: 0.023-12W/mk (watts per meter Kelvin).
Accuracy: The error value is within ± 5%.
Repeatability: The error value is within ± 3%.
Temperature: -10 to 200 ° C (temperatures outside of room temperature require an external constant temperature bath).
Measurement time: The standard is about 60 seconds (the sample must be in steady state).
Sensors: PD-11 box probe, heating wire, and chromium aluminum thermocouple.
Display screen: 30 word 7-line LCD display.
Display content: Thermal conductivity (thermal conductivity): 0. XXX~XXX. X W/mk, temperature: -100~1000 ° C, measurement information.
Minimum sample requirement: approximately 100 (length) x 50 (width) x 20 (thickness) mm or more.
External output: 2 channels RS-232C, 1 channel thermocouple power.
Usage environment: Temperature: 5 ° C~35 ° C, humidity: below 85% RH.
Power supply: AC100~240V, 50/60Hz.
Power: Approximately 60W.
Size: Host: 300 (length) x475 (width) x175 (height) mm, Box probe: 100 (length) x50 (width) x100 (height) mm.
Weight: Approximately 9kg.
Attachment: PD-11 box probe, probe coefficient table, power cord, fuse, quartz reference sample, silicone reference sample, polyethylene reference sample, cooling plate, brush, and operation manual.

Options: PD-13 insulated moisture-proof probe, PD-NO needle probe, PD-31 hot wire probe, QTM-PA1 powder measurement container, IDP-100 printer, SOFT-QTM thin film sample measurement software, SOFT-CAPE data collection software.