Load cells and force sensors

Load cells and force sensors  
 
What is a load cell and how does it work?  
A load cell (or load cell) is a sensor that converts force into a measurable electrical output.  Although there are many types of force transducers, strain load cells are the most common type.  
 
Strain load cells dominate the weighing industry, except in some laboratories where precision mechanical balances are still used.  Pneumatic load cells are sometimes used where essential safety and hygiene are required, while hydraulic load cells are often used in remote areas because they do not require power.  Strain load cells have accuracy from 0.03% to 0.25% full scale and are suitable for almost all industrial applications.  
 
How do load cells work?  
Load cells work by converting mechanical forces into digital values that can be read and recorded by the user.  The internal working principle of the load cell varies with the load cell selected.  There are hydraulic load cells, pneumatic load cells and strain gauge load cells.  The strain load sensor is the most commonly used of the three sensors.  The strain load cell is fitted with a strain gauge which increases the voltage when loaded.  Voltage changes to the extent covered by a digital reading as weight.  
 
When are load cells used?  
Load cells measure mechanical forces, mainly the weight of objects.  Today, almost all electronic scales use load cells to measure weight.  They are widely used because they can accurately measure weight.  Load cells are used in various fields where precision and precision are required.  Load cells come in different grades, CLASS A, B, C and D, with varying accuracy and capacity for each class.