Features of tension sensor

The tensile force sensor is based on the principle: the elastic body (elastic element, sensitive beam) produces elastic deformation under the action of external force, so that the resistance strain gauge (conversion element) pasted on its surface also deforms. After the resistance strain gauge is deformed, its The resistance value will change (increase or decrease), and then the resistance change will be converted into an electric signal (voltage or current) by the corresponding measuring circuit, thus completing the process of transforming the external force into an electric signal [1].

Taking into account the impact of the strategic acceleration and air buoyancy of the place of use on the conversion, the performance indicators of the tension sensor mainly include linearity error, hysteresis error, repeatability error, creep, zero temperature characteristics and sensitivity temperature characteristics.

The advantages of the tension sensor are high accuracy, wide measurement range, long life, simple structure, good frequency response characteristics, can work under harsh conditions, and easy to achieve miniaturization, integration and variety. Its disadvantage is that it has greater nonlinearity and weaker output signal for large strains, but certain compensation measures can be taken. Therefore, it is widely used in automatic testing and control technology.

Compared with the ready-made electronic weighing instrument, the pull pressure sensor is not restricted by the site, flexible assembly, convenient maintenance and low price.
The floor scale needs a certain area because of the weighing platform, and the tension sensor is installed on the supporting point of the container without additional area. It is especially suitable for occasions where multiple containers are installed side by side and the site is narrow. There are certain specifications for the range and division value of the electronic weighing instrument, and for the weighing system composed of the pull-pressure sensor, the range and division value can be set according to the needs within the allowable range of the instrument. The pull pressure sensor is easy to maintain. If the sensor is damaged, the support screw can be adjusted to lift the scale body, and the pull pressure sensor can be replaced without removing the pull pressure sensor. In addition, due to the simple structure of the tension and pressure sensor, the weighing system is composed of the tension and pressure sensor, and the investment is relatively small.

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