The heat flow meter is also called "heat flux meter", which is a quantitative detection instrument for heat transfer process and an important tool for measuring heat transfer and evaluating heat transfer performance. The composition of the heat flow meter: heat flow sensor, display instrument and connecting wire.
The heat flow sensor is the basic tool for measuring heat transfer (heat flow or heat flow) and is the most critical component of the heat flow meter. The performance and use of the heat flow sensor determine the performance and use of the heat flow meter.
The heat flow meter mainly meets the industry's requirements for the thermal conductivity measurement system of high-performance insulation materials. The sample is clamped between two heat flow sensors for testing, and the temperature gradient is fixed or adjustable. After the temperature and temperature gradient are stable for a few minutes, the thermal conductivity and thermal resistance of the sample are measured by the embedded controller or an external computer. With the help of flat panel temperature control system and dual heat flow sensor design, the heat flow meter can quickly provide accurate measurement data.
It is understood that the common application field of the heat flow meter is the construction. The principle is that when the heat flow passes through the heat flow sensor, a temperature gradient is generated on the thermal resistance layer of the heat flow sensor. According to Fourier's law, the heat flow density through the sensor can be obtained, and the direction of the heat flow vector is perpendicular to the isothermal surface. The effect of the closeness of the building heat flow meter and the measured object on the heat flow measurement accuracy: The closeness of the heat flow sensor and the measured object has a great influence on the heat flow stability time. The tighter the paste, the faster the stability and the smaller the measurement deviation; on the contrary, the greater the measurement deviation.
