Weighing scales are essential tools in the manufacturing, laboratory and retail industries. However, like all precision instruments, they require regular calibration to ensure accurate results. There are many things you should know about weighting scales calibration.

Here are some things you should know about includes;

First, it's important to understand why calibration is necessary. The main purpose of calibration is to maintain accuracy and reliability in the data gathered from weighing scales. Without regular calibration, results may become unreliable or inaccurate.

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Second, it's important to know when to calibrate. Most weighing scales need to be calibrated at least once per year, but this depends on the type of scale and its usage. If a scale is used in a harsh environment, such as a warehouse with heavy equipment, it may need to be calibrated more often.

Third, it is important to use certified calibration weights. These weights are specially designed to ensure accuracy and reliability in the calibration process. If uncertified or experimental weights are used, the results may not be reliable.

Fourth, it is important to understand the various types of calibration. Some scales require manual calibration, while others require automatic calibration. Manual calibration requires the use of a certified weight and a calibration checker. 

Finally, it's important to know how to troubleshoot any issues that arise during calibration. Common issues include inaccurate readings, erroneous data, or software errors. Troubleshooting these issues should be done in consultation with an experienced technician.