ISO 8301, EN 12667 Thermal Conductivity Tester of Heat Flow Meter
0.1 ~ 8.0 m2K/W
Description:
It is mainly used to test the thermal conductivity of insulation
materials, glass, fiber, foam and so on. Testing materials include
fiber board, loosing filler glass fiber, rock wool, foam plastic
(XPS/EPS/PUR, etc.), inter-layer composite plate, vacuum plate,
rubber products, cement(concrete) products, powder materials,
filler materials, gypsum board and so on. DRH300 coefficient of
thermal conductivity measurements conform to ASTM C 518, ISO8302,
ISO 8301, JIS b 1412, DIN EN 12939, DIN EN 13163 with DIN EN 12667
and relevant international standards. It is in full compliance with
the national thermal conductivity measurement standard with its
stable and accurate temperature control technology, computer
interface, software’s real-time monitoring and control, data
processing and saving connecting. With these advantages, it is
applied widely in materials properties detection organization,
scientific research institution, quality detection department of
factory, institutions of higher education teaching and research.
Standard:
ISO 8301 Thermal insulation -- Determination of steady-state
thermal resistance and related properties -- Heat flow meter
apparatus
GB/T 10295 Thermal insulation -- Determination of steady-state
thermal resistance and related properties -- Heat flow meter
apparatus
ASTM C518 Standard Test Method for Steady-State Thermal
Transmission Properties by Means of the Heat Flow Meter Apparatus
EN 12667 Thermal performance of building materials and products -
Determination of thermal resistance by means of guarded hot plate
and heat flow meter methods - Products of high and medium thermal
resistance;
Features:
1. It has fuzzy guarded plate that is hot plate temperature
tracking and precision control technology
2. Self-calibration function of the thermal conductivity and
heating power
3. Compensation for test piece’s thickness and the average
temperature
4. WINDOWS automatic thermal analysis measuring software system,
data analysis and reporting output function.
Specification:
| Thermal conductivity range | 0.005 ～ 2.3 W/m•K |
| Repeatability; Accuracy | ±1%; ±3% |
| Thermal resistance range | 0.1 ~ 8.0 m2K/W |
| Temperature range | RT ~ 60 ℃ |
| Cooling system | External water bath/compressed air |
| Hot plate temperature | Room temperature~99.99℃ |
| Cold plate temperature | 10°C < ± 0.1°C thermostatic control with high precision digital
display instrument temperature measurement |
| Thermostatic control with high precision digital display
temperature measurement, accuracy/resolution | 0.1℃/0.01℃ |
| Sample size | 300 * 300 mm thickness: 5 to 50 mm |
| Plate temperature control system | Automatic intelligent PID control, programmable data points: more
than 10 |
| Environmental condition | room temperature: 18~25℃, humidity: 20~80%RH |
| Data result analysis | Automatic thermal analysis software, Windows 7/ XP /sp2, English |
| Supply voltage | AC 220V±5%, power: 3.0kw |
| External dimensions; net weight | 89*60*90(cm); 110kg |
Test Procedure:
This test uses a Heat Flow Meter Apparatus (HFM). The Heat Flow
Meter consists of a cold plate and a hot plate that incorporate
heat flux transducers for measuring heat flow. The material to be
measured is placed between the two plates that are controlled to
different temperatures to create a heat flow from hot to cold
plate, which is measured by the transducers. The device is
calibrated against materials of known thermal conductivity and can
be used to measure flat materials in a wide range of thickness and
conductivity. Tests are commonly performed with a mean temperature
between 35ºF and 110ºF, with the most common being 75ºF. A
temperature difference of 40ºF – 50ºF is commonly used.
End Result:
The thermal conductivity (k-Value) and thermal resistance (R-Value)
are determined. These values can be used to determine energy losses
through a material. This test can be used to satisfy R-Value
regulations for insulation materials, such as the US Federal Trade
Commission’s “R-Value Rule” (10 CFR 460).
Special Notes:
This method can often be used as an alternative to ASTM C177, which
determines the same properties using a different device known as a
Guarded Hot Plate Apparatus (GHP).
