What is a weighing transducer?

　　A weighing transducer is basically a force sensor or force sensor. It is mainly used to measure weight. Although they can be used to measure other forces, such as torque, compression, pressure, etc. But in this article, we will focus on the weight measurement application.

　　Although gravity is the weakest of the four basic forces that prevent the universe from flying, it is the only force we can directly perceive. All things with a mass on the earth will be affected by gravity, because gravity will pull it towards the iron core in the center of our planet. Weight and mass are connected by gravity.

　　The world standard unit of measurement of weight is the kilogram (kg). Even in the United States, imperial weight, distance, and volume measurements are still widely used, and these units are still based on the metric SI system.

　　Therefore, the American pound (weight) is not defined by another imperial size but is officially 0.45359237 kg. World scientists defined how we calculate the mass of a kilogram in 2019 to quote the Planck constant and deleted it as a reference to a physical sample.

　　If gravity is removed, the object will not actually weigh anything, but its mass remains the same. When you weigh something, you are actually measuring the mass of that object in relation to the planet. Therefore, in fact, the load cell can measure mass. But this is only related to the meaning on earth.

　　Several basic technologies are used in weighing transducers, such as pneumatic load cells (usually used in intrinsically safe applications). The hydraulic load cell does not require a power source, so it is often used in remote areas that are difficult to access. There are also piezoelectric load cells that provide high-level (but still non-linear) output.

　　However, we will focus on strain gauge-based load cells, which are the most widely used type in the world today. They are inexpensive, very reliable, and can be used to handle various force inputs. They are the de facto standard in the weighing industry and provide full-scale accuracy of 0.25% or higher.

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