Bench weight scales calibration

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

Regular scale calibration performed by a reputable and accredited unit will bring the following benefits:

- Save costs and avoid waste while ensuring output product quality and limiting errors.

- Reliable measurements, ensuring reliable display of final results.

- Comply with periodic calibration to ensure quality for customers and avoid unexpected failures when customers come to inspect and evaluate factories and laboratories.

- Detect equipment deterioration and unexpected errors to make timely adjustments and repairs to ensure final product quality.

- Standard weight
- Thermometer
- Auxiliary means: pints, gloves,...

• Temperature: at the normal working temperature of the scale according to the manufacturer's regulations
• The influence of external influences (vibration, vibration, wind,...) does not distort the results
• The scale should be calibrated at the site of use.

- The scale must be completely assembled, cleaned, and adjusted for balance. If the scale has a Nivo, the water bubble must be adjusted to the midpoint of the centering line, ready for calibration.

- Gather enough standard weights, specialized test racks, and auxiliary optical disks.

- Temperature stability for precision cable weights E₂, F₁ and F₂ according to the requirements in Table 3 of the technical documents.

- Check the voltage used
- The scale must have all necessary details, parts and accessories
- The indicator must be clear and read accurately

The measurement of uncertainty (MU) is compiled from the following sources:
- MU of standard weights
- MU due to resolution at point "0"
- MU due to resolution at load level
- MU due to repeatability
- MU due to angular deviation
- MU due to changes in environmental temperature

- After calibration, the bench weight scales are stamped and issued a calibration certificate with the calibration results.
- Recommended calibration cycle: 01 year