A load cell is a device that converts one form of energy into the other, and is mostly used to produce an electrical signal whose magnitude is directly related to the amount of force being measured. In general, load cells are one of the simplest and most accurate tools for measuring force.
Several industries utilize load cells for high accuracy weight management as they offer non-intrusive, highly accurate load measurement data. Accurately installed load cells can effortlessly achieve measurements as exact as 0.03 to 1%, and custom load cells can be designed for virtually in any application
The most prevalent form of load cell is an analog cell that measures stress and weight strain. These strain gauging devices are attached to the spring element of the load, and this will bend when weight is placed upon it. The strain gauge then causes resistors to stretch, and their resistance is improved. This resistance is then transformed into voltage, which is sent via wire to the scale to give an exact, real-time measurement to the engineer.
Digital load cell systems differ from analog systems in three important ways: Signal strength, signal content and data sample rate.
Train gauge signals arise with analog electrical voltages, but in this type of cell they are automatically transformed to digital signals. In general, these signals use between two to six volts of energy, in other words, the digital signal is much stronger.
A digital load cell transfers data from each load cell, compared to analog systems that use only one cell's electrical voltage. This material uses a binary language, like the computers, and because this binary information is safe from intervention of radio signals, electromagnetism, and temperature, it is much more stable than analog.
Data sample rate
This measure how quick a cell can read its information. Instead of analog cells providing information endlessly in real time, digital load cells take bits of information at a time, multiple times per second.