How important is weighing scale in Food processing factory?

Weighing scale is used to weigh raw food, in-process products and finish products in a processing plant.  We rely on the measuring device to weight and record the weight in production and packing. Is it only so?  

Every processor has different kind of weighing scale, according to the usage.  For instance, if they need to weigh big and heavy products, bigger weighing scale will be used.  Besides, there are also weighing scale for weighing wet products, dry products, or scales couple with price indication, some scale conneckting with an equipment and also some scales are used to verify the weight that is being weighted.  

Every scale also has different range, some 100kg, some 10kg and there is also 100g for small scale.  If you are weighing sensitive food such as additive, the accuracy of weighing range is very important.  Some would need as accurate as 2 until 4 decimal point.  If you see the scale description wrote as 100g/0.001g.  It means it can be weight until 100g with the accuracy of 3 decimal point. For example, 15.005g.

There are scale that need to be calibrated, usually once a year.  A sticker that written calibration date will be given by the calibration company and should be sticked on the back of the scale as a reminder to calibrate one year later.  

For HACCP certification, if weighing step is a Critical Control Point (CCP), operator should calibrate it everytime before using, usually using standard weight.       

Thus, if you are food processor who need to use weighing scale, especially to weigh sensitive food, do make sure to have these control measures.