Everything You Need To Know About Load Cells

A load cell is a type of transducer that converts force into an electrical output. In the weighing industry, strain gauge load cells are most prevalently used. Generally speaking, any object which requires weighing is likely to use a load cell. There are various types found in different weighing equipment and other machinery. From single- point to compression or bending beam; the load cell depends upon the application. Hydraulic load cells are suited to remote areas as they do not rely upon a power supply. In instances whereby hygiene and safety are top priorities, pneumatic load cells are favored. 

Which type of load cell?

 Load cells are used in day-to-day applications such as at self-service checkouts or at the airport to weigh luggage. Your business may have come across load cells in the form of medical equipment, agricultural produce, or industrial measurements. A load cell manufacturer will be able to help you to determine the type of load cells that you require depending upon your usage and industry requirements. Let’s take a look at the different types of load cells in a little more detail.

Strain gauge load cells

These cells work to convert the load into electrical signals. When weight is applied, the gauges function as part of a structure that reacts by deforming. A voltage measurement represents the change in resistance. Up to four gauges make up a strain gauge load cell. Due to their accuracy, these types of load cells are highly regarded. Usually, businesses in industrial sectors will make use of these types of load cells. They are  considered to be very cost-effective for a business.

Hydraulic load cells

These types of load cells use an internal filling fluid to detect weight as a pressure change. Hydraulic cells work as a force-balance apparatus. When the force increases, the hydraulic fluid pressure goes up. No electricity is used to work these cells. If you are working in a hazardous area, a hydraulic load cell is preferable. Hydraulic load cells use a piston and a diaphragm. When the piston and the diaphragm move the fluid pressure increases. Some general uses of these cells include hopper weighing, bin, or tank. 

Pneumatic load cells

Similar to hydraulic load cells, these also operate in terms of force versus balance. Pressure is applied to one side of the diaphragm to operate these cells. An attached gauge works to record the pressure which is inside the cell. Pneumatic load cells are great for measuring smaller weights in instances whereby hygiene is vital. Pneumatic load cells are advantageous because they are not sensitive to changes in temperature. Unlike hydraulic cells, they contain no fluid.

If you are looking for a cost-effective option, strain gauge load cells are a good solution. For those relying upon hygiene ( perhaps in a food or medical business ), pneumatic cells may be favorable. For weighing tasks in hazardous environments, hydraulic load cells are a great option. For further advice, it’s best to contact a load cell manufacturer to discuss your specific business needs. 

This is a contributed post.