What are the basis for the selection of load cells

Sources: | Date: 2014-05-29 16:30:44 | Browse:79388

Abstract:

The selection of the load cell is mainly to consider its own needs. The higher the accuracy of the demand, the higher the requirements for internal components. So what factors should be considered?1. The choice of sensitivityGenerally, within the lin…

The selection of the load cell is mainly to consider its own needs. The higher the accuracy of the demand, the higher the requirements for internal components. So what factors should be considered?

1. The choice of sensitivity

Generally, within the linear range of the sensor, the higher the sensitivity of the sensor, the better. Because only when the sensitivity is high, the value of the output signal corresponding to the measured change is relatively large, which is beneficial to signal processing. But it should be noted that the sensitivity of the sensor is high, and external noise that has nothing to do with the measurement is also easy to mix in, and it will also be amplified by the amplification system and affect the measurement accuracy. Therefore, it is required that the sensor itself should have a high signal-to-noise ratio, and try to reduce the factory disturbance signal introduced from the outside world.

2. Frequency response characteristics

The frequency response characteristics of the sensor determine the frequency range to be measured, and the measurement conditions must be kept undistorted within the allowable frequency range. In fact, the response of the sensor always has a fixed delay, and it is hoped that the delay time is as short as possible.

3. Linear range

The linear range of the sensor refers to the range where the output is proportional to the input. In theory, the sensitivity remains constant within this range. The wider the linear range of the sensor, the larger the measuring range, and a certain measurement accuracy can be guaranteed. When selecting a sensor, when the type of sensor is determined, it is first necessary to see whether its range meets the requirements.

4. Stability

The ability of a sensor to keep its performance unchanged after a period of use is called stability. In addition to the structure of the sensor itself, the factors affecting the long-term stability of the sensor are mainly the use environment of the sensor. Therefore, to make the sensor have good stability, the sensor must have strong environmental adaptability.

These factors determine the different grades of the load cell. When choosing a model, you must choose your needs based on these factors. Of course, the higher the accuracy, the higher the price.

Previous: The relationship between the accuracy of the load cell and the angular difference and the solution

Next: Features of Weight Transmitter

Relevant articles

University of Shanghai for Science and Te…

2019-08-03 10:48:09

A few days ago, Tesla CEO Elon Musk bombarded the technical limitations of lidar as a sensor for self-driving cars on the company’s self-dri…
2019 weighing module market survey

2019-08-03 10:46:24

The weighing module industry market survey report is to use scientific methods to purposefully and systematically collect, record and organiz…
What kind of load cell is more reliable

2019-07-24 13:09:33

In the current technology industry, a variety of electronic systems and mechanical systems will use various weighing devices, and the most im…
2019 home smart sensor white paper releas…

2019-07-24 11:28:34

At present, and even in the next few decades, sensors are listed as the top 10 technology products that affect and change the world economy a…
Hangzhou launches on-board weighing syste…

2019-07-24 09:12:21

At present, load cells have already penetrated into a wide range of fields such as industrial production, space development, ocean exploratio…
Combined strain pressure sensor

2018-12-15 08:49:58

In the combined strain pressure sensor, elastic sensitive elements can be divided into sensing elements and elastic strain elements. The sens…