M02 Digital Indicator
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3.3 Millivolt Value Display
This function is mainly used for system test, position-error test for weighing
mechanism and linearity test for load cell.
1. System Test
(1) If display data changes with loaded weight changes, it shows that connection
of load cell is correct and weighing mechanism works well.
(2)If display value is OFL (or –OFL), it means that loaded weight on load cells is
too large (or too small). Please unload the weight (or load more), if display value is still
OFL (or –OFL), the possible reasons are as follows:
a. There is something wrong with weighing mechanism, please check and clear.
b. The connection of load cell is incorrect, please check and clear.
c. Load cells may be damaged, please replace.
2. Position-error Test for Weighing Mechanism
Load a same weight on each corner of weighing mechanism and record
displayed millivolt value respectively. If differences among these values are obvious,
please adjust weighing mechanism.
3. Linearity Test for Load Cell
Load same weight for several times, and record displayed value every time. If
one or two values are obviously much larger or smaller than any others, it means that
the linearity of load cell is
bad.
*NOTE: You must use
to zero display data before weight is
loaded for each time.
