With the rapid development of science and technology, weightless scale instruments made of weightless sensors are also widely used in all walks of life, realizing fast and accurate weighing of materials.

The weightless module integrates the load transmission device of the weightless sensor and the installation connecting plate, etc. Its unique design not only ensures the high precision and long-term stability of the shear beam sensor, but also solves almost all problems caused by improper installation. Error. It is accurate in weighing, safe and reliable, and has a variety of installation methods. It is suitable for various harsh environments. The common weightless scale instrument installation methods are as follows

The installation structure of the weightless module is divided into three types: fixed, floating and semi-floating, which allow the container to be slightly deformed.

Static load loss-in-weight module installation method:

Made of stainless steel, it can effectively resist the erosion of corrosive substances. Fixed, floating and semi-floating three structures can be used in various harsh conditions.

Dynamic load loss module installation method:

Weightless scale instrumentIn the installation method using 4 dynamic loadless modules, generally 2 of them are limited on 3 sides, and the other 2 are limited only at the end.

At present, almost all of the weightless scale instruments are used in the weighing field. Here, taking the failure of the weightless sensor as an example, the on-site use and debugging of the weightless sensor are discussed. For the detection and elimination of various faults of the sensor, the fault handling should follow the following steps: Observation (fault observation) - analysis (failure cause) - test (for fault judgment or verification judgment result) - repair (repair or replacement) - verification wiretapping) performance test.

According to the actual situation, the intuition method, the substitution method, the comparison method, the insertion method and the code diagnosis method should be selected for judgment.

According to the characteristics of the stainless steel liquid filling scale, the following methods are used for detection, judgment and verification:

(1) Impedance identification method: remove the two output lines and input lines of the sensor one by one, and test the output of the signal cable and the shielding layer with a multimeter, and the insulation resistance between the input impedance and the core line. If the test result does not reach the value of the certificate , it can be identified as a faulty sensor.

(2) Signal output judgment: If the impedance method cannot judge the quality of the sensor, it can be used for further detection. First, the instrument is powered on, and the output wire of the sensor is removed. The MV output value is measured with a multimeter at an empty scale. Assume The rated excitation voltage is U (V), the sensitivity of the sensor is m (mV\/V), the rated load of the sensor is f (kg), and the output of each stainless steel liquid filling scale is Umk f (mv). The output value of this value exceeds the calculated value (ideally, it should be equal) or is unstable, it can judge the failure of the sensor.