How to choose a suitable electronic scale? How to choose an electronic scale?

Many people have had the experience of weighing on a weighing scale or a mobile phone on a platform scale, but such weighing results can have significant errors. Due to differences in industrial environments, the application environment of scales is limitedMore complex

Change, every scale has its professional purpose. If mixed or misused in industrial production, it will seriously affect product quality.

Only by using appropriate scales can reliable weight results be obtained to ensure product quality. Mettler-Toledo has organized it“Four step scientific weighing process”It can help everyone better choose the scale that suits them.

Of course, you can also contact directly4008-878-788Tell us your needs, Mettler-Toledo will provide you with professional services.

The Four Steps of Scientific Scale Selection

Step 1: Determine the weighing environment

The weighing environment refers to the external environment where factors such as temperature, humidity, dust, and vibration on site can have a significant impact on the weighing results. Depending on the external environment, different scales need to be selected to meet the on-site requirements.

For example, in a very humid environment, it is necessary to choose a scale with a high IP rating.

Step 2: Determine the accuracy requirements for weighing

This step is the core step of scientific weighing selection, which requires confirmation of two aspects of information:

(1) Process requirements

You can clarify your needs by answering the following three questions

•What is the weight you need to weigh? (including tare weight)

•What is the small weight you need to weigh? (Excluding tare weight)

•What is your weight tolerance?

The large weight determines the range of the scale; The small weight and weighing tolerance determine the accuracy requirements of the scale.

For example, what is the weight you measured50kgWhat is the small weighing weight1kgWeight tolerance1%

So first, choose the capacity of the scale>50kgUsually, it is60kgThe scale; Secondly, when considering the accuracy of the scale, it is necessary to take into account small scales1kgWeight tolerance1%，1kg*1%=0.01kgSo the accuracy of the scale

The degree needs to be achieved0.01kg.

(II) Accuracy of the scale

There will always be errors between the weighing results of the scale and the true values, which are caused by a combination of factors such as linearity, angular deviation, repeatability, hysteresis, temperature stability, stabilization time, and degree of division. Different scales

Due to differences in design concepts and sensor instrument technologies, there can be significant variations in errors. The following diagram can help us better understand these factors.

As users of the scale, we can check the calibration division value on the nameplate label of the scale（e）Instead of displaying the division value（d）To determine the accuracy of the scale. Under the same capacity, check

Fixed scale value（e）The smaller the scale, the higher the accuracy of the scale.

Step 3: Determine regulatory requirements

Comply with trade settlement regulations

If the scale is used for commercial transactions based on weight pricing, it must be defined as "trade settlement". The scale must comply with the requirements of Chinese metrology regulations.

Confirm explosion-proof requirements

The scale used in explosive environments must comply with China's explosion-proof regulations. The use of equipment must comply with the requirements of explosion-proof areas. Mettler Toledo can provide you with weighing products for different explosion-proof areas.

Step 4: Determine application requirements

With the development of scales' functions, scales are no longer simply providing you with weighing results. Choosing scales with different functions can greatly affect the efficiency of the production line. Mettler Toledo has always been committed to helping

Our clients provide quality standards and production efficiency to achieve lean production. Meanwhile, as your requirements for workshop production level increase, this step will become increasingly important.

1. count

A counting scale capable of storing the single weight of materials (such asICS241）Compared to traditional counting scales, it can save a lot of repetitive sampling work and greatly improve efficiency;

The function of printing and connecting multiple scales on the counting scale allows for easy selection of different scales based on material size, greatly improving counting accuracy.

2. recipe

By providing simple guidance on ingredient weighing solutions or centralized formulation systems, it is possible to prevent human operational errors, ensure consistent formulation results, greatly improve product quality, and significantly reduce management costs.

After the above four steps, you can“scale”My heart is satisfied.

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