Weighing instrument: Through the sensor into a digital display the object weight, common weighing instrument has flat platform scale for weighing instrument (input/output for 350 Ω, can connect one or more sensors, usually used in the flat platform scale, scale table, floor scale, etc.), truck weighing instrument (input/output for 750 Ω, can connect one or more sensors, is commonly used to meet Factories, such as large weighing equipment and also with a built-in printer, convenient print weight), animal scales for weighing instrument (animal balance with weighing instrument is a necessary function of peak value holding function), numerical control instrument (mainly used in batching scale, precise shows the weight of each ingredient, as well as control the function of the weight, When the weight reaches the set value, it will automatically stop)