Ask about the verification method and maintenance skills of electronic batching scale.

weighing apparatus

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Electronic batching scale

Verification method and maintenance skills of

Electronic batching scales are widely used in building materials, construction, chemical industry and other industrial fields.

It is the main equipment for measuring ingredients.

The accuracy of electronic batching scale is related to the quality of products.

How to ensure that weigh accuracy and reliability of electronic batching scale,

Is an important issue.

1

Verification of electronic batching scale

The weighing mode of electronic batching scale,

It is a discontinuous accumulation automatic weighing instrument.

Electronic batching scale

accuracy grade

The flag is usually 0.2%, 0.5%, 1%, 2%. In the daily verification work,

The weighing process of electronic batching scale still needs manual intervention and operation.

Belonging to non-automatic weighing,

In addition, in the general verification procedure,

Static verification under standard load accounts for most of the verification.

Therefore, reference should be made to JJG539-

97

Digital indicator scale

Verification regulation for verification. Generally speaking,

The accuracy grades of 0.2% and 0.5% of automatic scales correspond to the accuracy grade III of non-automatic scales.

The accuracy grades of automatic scale 1% and 2% correspond to those of non-automatic scale Ⅳ. There's another one under verification.

Verification scale value

e

Select questions.

2

Calibration of electronic batching scale

There are three main reasons for the error of electronic batching scale:

First, the mechanical part,

Including force transfer, temperature-induced expansion and friction between parts;

The second one is

electronic circuit

And an instrument for display ingredients,

Mainly affected by temperature, power supply, electromagnetic field, etc.

The third is

weighing cell

,

The quality and use of the weighing sensor directly determine the weighing accuracy of this electronic batching scale.

Some main error types of scales, such as nonlinearity, hysteresis, temperature drift, repeatability and creep, are mostly related to load cells. When the offset load error is adjusted,

The standard weight is put into a material bin,

Adjust the mass value of the standard weight. Program calibration and subsection calibration shall be adopted.

three

Daily maintenance of electronic batching scale.

Maintenance,

need

Professional and technical personnel

,

Always check the tightness of each component, the use of electrical equipment and load cells, etc. Daily maintenance can't be ignored. Pay more attention to some minor problems at ordinary times,

We can prevent big mistakes.