Designing and developing the best quality and most accurate load cells is essential to provide end users with the most accurate readings for small to large weighing needs. Load cell manufacturers have to keep several important factors in mind when developing, improving and actually fabricating their equipment.
Load Cell Basis
In its most basic use, all load cell manufacturers have to focus on developing a transducer, or a sensor, which is able to transform a physical change into an electronic signal. This has to be executed with a high degree of accuracy in a wide range of different operating conditions.
There are several different ways load cell manufacturers can design their load cells to make this conversion and provide the electric signal. The most common of these is in a voltage change, but they can also measure a frequency change or a current change.
Operational Considerations
Another essential consideration for Load cell manufacturers is designing the load cells for use in a wide variety of different work environments and conditions. This includes providing complete sealing of the load sensor and cell to protect against any possible moisture getting into the system.
Even with indoor work conditions, it is very common for load cell manufacturers, at least those offering the top systems, to include redundant sealing. This is a key component to look for as it is extra protection to prevent exposure to moisture either outdoors or in indoor operations when washing down will be a consideration for the scales and equipment.
Other factors include the hardware and software that comes with the system as well as the materials used in the construction of the load cell.
Testing and Specs
The accuracy found in any load cells will be a direct correlation to the time spent by the manufacturing in testing the system and adjusting to allow correct readings over extended periods of use.
Different types of load cells, including single point, compression, and tension load cells should all be carefully tested for extensive use. These are typically designed for a specific load capacity, and choosing a load cell that can weigh up to and over what you need at this point in time is always a good option. Some load cell manufacturers also offer an electronic calibration capability which allows easy confirmation of the accuracy of the scale as needed throughout the job.
