The measurement formula that the load cell in the weighing instrument cannot do without

The indispensable measurement method of load cell

Let’s introduce the principle of weighing: According to the force characteristics of load cells in practical applications, load cells are divided into two types, static load weighing modules and dynamic load weighing modules. The static load weighing module is suitable for occasions that only receive vertical force, such as the component inspection of tanks and storage hoppers, and the dynamic load module is suitable for occasions where the force is significant. Such as the component inspection of channels, production lines, and conveyor belts. The weighing system is a new type of weighing element. It combines components such as load cells, load transfer equipment and device connectors, and can be easily combined with various shapes Mechanical equipment is connected, such as raceways, channels, vertical tanks, tanks, hoppers, etc. The electronic weighing system centered on the weighing module can not only ensure high weighing accuracy, long-term stability and good characteristics, but also handle Weighing errors caused by improper installations. The system using weighing modules can theoretically achieve a weighing accuracy better than five ten thousandths.

However, the resistance strain type weighing module in the electronic weighing system is based on this principle: the elastic body is elastically deformed under the action of external force, so that the resistance strain gage pasted on its surface is also deformed. After the resistance strain gage is deformed, its The resistance value will change.
Then the corresponding measurement circuit converts this resistance change into an electrical signal, and then completes the process of transforming the external force into an electrical signal. It can be seen that the resistance strain gauge, elastomer and inspection circuit are not available in the resistance strain type load cell The missing ones are the main ones. Take a typical chemical tank as an example. The weighing module installed at the bottom of the tank transmits the component signal of the tank to the junction box. The junction box connects the signals of various weighing modules in parallel, and can Adjust the angle difference according to the load condition of each weighing module, and send the aggregated component signal to the component transmitter. The component transmitter processes the component signal into corresponding component data and outputs it to the control system, so the load cell will be any Weighing components are not missing.