What are the precautions for the use of resistive load cell?

What are the precautions for the use of resistive load cell? Force level sensing to analyze the precautions in the use of resistance force sensor for you.

(1) The strain limit increases with the strain, and the nonlinearity of the output of the strain device increases. When the error reaches 10%, the strain limit of the strain device is generally.

(2) Mechanical hysteresis sensitive grating, base and adhesive layer will generally have residual deformation after bearing mechanical strain, resulting in mechanical hysteresis of strain devices.

(3) Zero drift and creep At constant temperature, there is no mechanical strain, and the resistance of the strain device changes with time, which is called zero drift; The resistance of strain devices changes with time, which is called creep.

(4) Internal stress caused by zero drift and creep; Under certain temperature and load, the internal structure changes of resistance wire materials, adhesives and subbase.

(5) The insulation anode between the outgoing line of the strain device stuck on the specimen and the specimen is usually 50-100m, and the long-term accurate measurement requires more than 100m or even 10 g..

(6) The maximum current through the maximum working current strain device allows normal operation. Usually, the static measurement is 25ma, and the dynamic measurement is 75-100ma. Excessive working current will lead to overheating of strain devices, zero drift of sensitivity change, creep increase and even combustion.

(7) The resistance change of strain devices caused by temperature change is usually of the same order of magnitude as the electropositive change caused by strain, and appropriate circuits must be used for temperature compensation.