Good Force Measurement Practice - Load Cell with Flat Base

The error is associated with installing a nonflat base on a multi-column cell.   Below is the actual test result we observed on a Revere multi-column cell.  Morehouse received the load cell, tested it with the non-ground base attached to it.  We set up the load cell in our 2,250,000 lbf force machine.  We exercised the load cell 3-4 times and then took three runs of data.  To test the repeatability, we rotated the load cell 120 degrees between each run.  The below results are the results from the repeatability due to rotating the load cell with a nonflat base.  We then removed the nonflat base and stoned the bottom of the load cell to make sure it was as flat as we could make it.  We ran the same test and reported the errors below.

the figure above shows five times the measurement error with a nonflat base

Conclusion:  A nonflat base produced a larger variation in output when the load cell was rotated; this error was five times that of a ground base.   If you are using a load cell with a non-ground base, or if you are using compression pads that are supposed to be flat, you should verify flatness before use.   Top compression pads and load cell bases can usually be machined, stoned, or ground flat.  A flat base or ground compression pad will produce better measurement results.

Everything we do, we believe in changing how people think about force and torque calibration.  Morehouse believes in thinking differently about force and torque calibration and equipment.  We challenge the "just calibrate it" mentality by educating our customers on what matters, what causes significant errors, and focus on reducing them.  Morehouse makes our products simple to use and user-friendly.  And we happen to make great force equipment and provide unparalleled calibration services.

Wanna do business with a company that focuses on what matters most?  Email us at info@mhforce.com.

Please share if you found this helpful.

Newsletter Subscription

Find Related Articles

When You're Looking for More Accurate Measurements

Morehouse would like the opportunity to earn your business. Contact us today.
Contact Us
  • Type

Top cross linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram