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TG Load Cells: Make Weighing Easier

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TG Load Cells:
Make Weighing Easier
Widely used in various occasions requiring force measurement and process monitoring.

What Points to Pay Attention to in Compensation Technology When Using ​force Measuring Sensors?

Generally, after completing processes such as patch maintenance, maintenance, and bridge construction, the force measuring sensors should undergo compensation handling. The compensation process mainly includes zero temperature compensation, zero output compensation, output sensitivity temperature compensation, output sensitivity consistency adjustment, output impedance induction adjustment, and output impedance consistency adjustment. Attention should be paid to the following points in the force measuring sensors compensation technology.

Improve the consistency adjustment process of the force measuring sensors' output sensitivity

Before the consistency adjustment of the output sensitivity, the screws should be tightened and then loaded. When measuring the output sensitivity of the measurement sensor, the linearity error should be checked, and the measurement points should not be less than 5 points. After calculation, if the linearity error exceeds the tolerance, the tightening screws should be adjusted in time until the linearity error meets the requirements, and then the sensitivity consistency should be adjusted. If the linearity test is not performed, linear errors exceeding the tolerance may be discovered in future factory calibration, and the linear errors are no longer easy to adjust. If the tightening screws are adjusted at this time, the output sensitivity will change.

Strictly control the zero output compensation of the force measuring sensors

In the process of the actual production of zero output compensation, due to the heavier weight of the force measuring sensors after assembly, it is inconvenient to move back and forth, and the elastic body and base have not been assembled. In order to meet the requirements of the resistance strain weighing sensor, the zero output value should be within ±2%FS, and the technical requirements of the zero point compensation process should be within ±2%FS. After the elastic body and the base are assembled, it will be found that the zero point will drift, and the drift amount will reach dozens of microvolts. It should be noted here that the zero point output value after preloading is actually the output value of the sensor under a small static load. The generation of the punch is mainly caused by the tightening screws. Therefore, in order to ensure that the zero output value of the sensor does not exceed the tolerance, the technical requirements for improving the zero compensation process in production are needed to reduce the zero output value. At the same time, in the processing of the base, grinding processes should be conducted to machine two end faces to minimize zero drift.

The force measuring sensors should undergo a load test before zero temperature compensation

Due to the complex bridge circuit, multiple lines, and multiple welding points of the force measuring sensors, it is difficult to ensure accuracy during the patch connection process. The bridge resistance can only be measured by checking the breakpoints or short points in the bridge. This method cannot be found when the bridge is connected in reverse, which can easily cause judgment errors.

Tiangguang, as an expert and well-experienced force sensor manufacturer, offers a wide range of load cell force sensors in stock, welcome to choose the suitable weighing measurement type and custom your own load cells:

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