Bench weight scale verification

A bench scale is a common type of electronic scale that usually has a maximum weight capacity of 30kg, has a flexible maximum size of about 35x35cm, can be conveniently portable and moved with many uses such as quantitative weighing, Sample counting scales, packaging scales at home, stores, supermarkets, offices, companies, factories, post offices...

Bench Weight Scales have a resolution of <1/1,000 and a maximum weight of 60kg, usually weighing in g. Currently, disc scales are also called common scales because they are very popular in the market. A disc scale is a medium-accuracy non-automatic scale according to OIML R76-2006, including electronic scales, digital indicators, mechanical disc scales, etc.

- In Industry: Bench scales are used to check the accuracy of manufactured products. Bench scales are used to balance weight during the production process so that the production process is carried out correctly and results in the highest quality products. For example in:

• Textile industry: used to balance weight in the clothing production process, helping to ensure that the amount of material used is reasonable, while also helping to optimize the production process.
• Food industry: Used to measure ingredients in the food production process such as sugar, salt, flour, etc. Helps production recipes be carried out accurately and meet quality requirements of product.

- In agriculture:

• Used to balance weight when carrying goods: Bench scales are used to help farmers balance weight when transferring agricultural products from one place to another. Agricultural products such as vegetables, fruits, livestock, and poultry all need to be measured and checked for weight accuracy to ensure that they are delivered safely and reliably.
• Used to check the accuracy of the measurement process: Bench scales are used to accurately measure the weight of these products to ensure compliance with food safety standards and meet food needs. market demand.
• Use in preserving agricultural products: To ensure that agricultural products are preserved and transferred in the most perfect condition, bench scales are used to measure the weight of agricultural products such as rice, wheat, beans, pepper, ... before packaging and preserving. Ensure product quality and value are not lost after packaging and transportation.

- In Health: Weighing health, weighing luggage for passengers when traveling by plane, weighing newborn babies

- Electronic scales need to be calibrated before being put into use because if not calibrated, there will be errors. Electronic scales when imported from abroad need to be tested to make the scales more accurate when put into use, to avoid causing damage to users.

- Scale inspection will increase credibility when used because the scale is inspected by competent agencies that grant inspection licenses.

- Measurement standards:

• The weight has a total mass equal to the Max, with an accuracy class of M1
• The weight determines the error, (1 ÷ 500) g; (1 ÷ 10) kg, with an accuracy class of M1

- Other means: Load tare enough to check up to Max

• Temperature: as the normal working temperature of the scale.
• External influences (vibration, magnetic field, grid voltage, …) do not affect the test results.

- The scale must be completely assembled, clean, placed on a flat surface, and ready for verification.

- Gather enough standard weights, tares and other testing means. The standard weights must still be valid for verification.

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- Check the label
- Position of verification stamp and label
- Check the completeness of the scale's parts
- Check the surface of the scale details

If a bench weight scale meets the requirements of this procedure, it will be issued a verification certificate and verification seal and/or a verification sticker as required. The verification seal must be affixed (or the verfication sticker must be affixed) at locations that prevent the adjustment of the accuracy of the scale.

If a bench weight scale does not meet one of the requirements of this procedure, it will not be issued an verification sticker, and the old verification seal (if any) will be removed.

The verification cycle of a bench weight scale is 24 months.