The difference between a sensor and a weighing sensor

Sensor is actually a kind of weighing signal into analog electrical signal or digital electrical signal output device, according to different actual working environment of the correct selection of sensor, directly affect the accuracy and life of the sensor, avoid unnecessary loss.

High temperature environment, for the sensor working in high temperature environment often use high temperature sensor; Avoid coating material melting, solder joint development, structural changes in the internal stress of elastomer and other problems. Dust, high humidity environment, easy to cause short circuit, should choose the sensor with high tightness. Electromagnetic interference, some environmental interference seriously directly affect the accuracy or weighing display is unstable, should check the source of the impact on the environment, and choose a better shielding loadometer sensor.

The difference between a sensor and a weighing sensor

Most of the weighing sensors are resistance strain weighing, strain gauge is the core unit of the weighing sensor, elastic body is the basic component. According to the structure type, the weighing sensor is mainly divided into S row double hole sensor, column sensor, spoke and bridge sensor, column ring sensor, shear beam sensor and single S beam sensor. The range of s-row double-hole sensor is generally 2Kg to 500Kg. This type of weighing sensor has strong anti-deviation and anti-side ability.

The measuring range of the column sensor is very large, generally up to several hundred tons, it has good rigidity, strong overload resistance, simple processing, and relatively light weight. Due to the symmetry of the structure, the spokes sensor can withstand large lateral forces. Because of its large lag error, many occasions have been replaced by the bridge sensor. The elastic body of the bridge sensor is shaped like a bridge, hence the name.

The bridge sensor has high precision and easy calibration. It is widely used in many occasions such as automobile scale and platform scale. The column ring sensor is mainly used for measuring tension due to its structural characteristics, and its accuracy is generally 0. 3 to 0. 05. Shear beam sensor made of shear principle, accuracy and stability are very high, generally do not need to linear compensation can meet the requirements. It is not affected by the change of the force point. Measuring range in dozens of Kg of occasions generally choose a single S beam sensor, it is not suitable for use when the vibration is large.

The following problems should be considered in the selection process of the weighing sensor:

One, installation requirements, some occasions are directly suitable for a specific weighing sensor.

Two, the use of environmental conditions, such as sealing, explosion-proof, etc.

Three, the accuracy of the sensor. The degree of accuracy is usually determined by the structure of the elastomer and whether there is linear compensation during processing.

Four, the range of the sensor. Estimate the maximum weight of the object to be measured. To obtain a better measurement value, generally choose a range of 2 to 2.5 times the maximum weight of the object to be measured.

5. The characteristics and creep characteristics affected by temperature during the use of the sensor.

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