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:
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.