The different of the loss-in-weight feeder accuracy test setup

In production, the feeder typically includes a flexible interconnection to make it dusty and arranged to be automatically filled.

Feed rate accuracy testing in production is often performed by shutting the line down, exposing the feeder outlet tube, and placing a collection container beneath this outlet tube. The feeder is then operated. A timed sample is collected and then placed on a scale to be weighed. With this method, the feed rate calculation will not be as precise as the calculation previously done in the feeder manufacturer’s performance test lab.

As an alternative to this method of checking feed rate accuracy, feeder manufacturers have developed an online, in production method. The controllers being provided with the feeders today are equipped with feed rate test capabilities.

    

With the feeder operating normally in production, the test function is selected and the display on the controller will display the test feed rate.