Elastomer has been hit, resulting in stress in the elastomer; or local fracture of the elastomer, resulting in weighing load on the elastomer, the strain produced by the elastomer is not linear, resulting in inaccurate figures;
The overheating of the resistance strain gauge caused by the high voltage of the supply bridge damages the viscose of the strain gauge or changes the resistance value of the strain gauge, resulting in inaccurate reading.
The influence of environmental factors. Electronic weighing scale has been used in high temperature or humid environment, which results in the decrease of insulation resistance between strain bridge and elastomer, and the excessive fatigue of elastomer causes the elastomer to lose its stress range.
When the constant weighing load is added to the electronic valuation scale, the display value of weighing changes with time, and the larger the load is, the greater the change is. This phenomenon is customarily called creep, and the main cause of creep is the factors of adhesive layer. The adhesive is improperly selected, or the adhesive deteriorates due to aging; the environment of strain gauge is humid, the adhesive layer is too thick and the adhesive layer is not cured well.
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