Considering OFL is a frequent problem of the weighing indicator that mentioned by clients, GM weighing shot this video for self detecting.

The problem of OFL contains 4 situations:

Weight overflow,

weight underflow,

The signal of loadcell too low

The signal of loadcell too high.


There are 4 reasons that can trigger OFL:

First: Indicator parameters setup error,

Second: external wiring error,

Third: loadcell damage,

Fourth: Indicator hardware damage.


The equipment needed for OFL detecting:

A weighing platform with full scale of 20kg,

A GM9907-LD Weighing Indicator,

A weight of 2kg,

A straight screwdriver and a digital multimeter with millivolt voltage range.


Now please follow steps in the video to find out OFL reasons.


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