A compression load cell, as with any other type of load cell, is able to recognize a change in physical force into an electronic signal. In addition, this electronic signal is then converted into a readout which can be displayed on a terminal or controller at the scale location or sent through wired or wireless transmission to a remote data capture program.
The compression load cell is so named because of its operating principles. Instead of detecting or measuring force and weight by bending, tension or shear, they use compression as the measurement of the force. The load cell recognizes this change in compression, even with extremely small amounts of changes in force, based on the specific parameters of the scale system.
Design
In most cases, a compression load cell will be a relatively small, circular component with a smaller button design. They are not large components of the scale system, and they are very practical for smaller scales, including counter top models or portable models where space is a consideration.
However, a compression type of load cell is not just for light measurements and weighing systems. There is a compression load cell for all ranges of weights found in production lines from those needing less than 25 pounds to those requiring measurements of tens of thousands of pounds or more. Design features can also include the type of material the load point is made of to be able to stand up to different working temperatures and environmental conditions.
The design of this particular type of load cell is considered to be very stable, which means it will provide excellent readings and accuracy for extended periods of use. It is also advantageous to consider a hermetically sealed load cell that will be highly resistant to water, humidity or dust even with years of use.
Features to Consider
As the compression load cell has to be accurate, and it is important to be able to test for accuracy at any point in the operation, it is a good option to look for a self-calibrating system. This allows easy calibration without the need to shut down the production and go through the entire process of testing using manually applied weights.
Finally, it is important to consider if there are specific use needs for the compression load cell and scale with regards to physical space. Low profile load cells are a great option in these limited space areas, allowing you to set up your weigh area as needed.
