How to choose electronic scales and electronic weighing instruments reasonably

Products of Shanghai Automation Instrument Co., LtdThe convenient use of electronic weighing instruments has spread throughout various industries and has been widely used. It not only has high-precision measurement, but also achieves multifunctionality and multi-purpose. At present, there are hundreds of domestic manufacturers producing electronic scales, mainly non automatic scales and automatic scales.

Electronic scales have entered a period of self-development and design from the introduction of technology in the past, especially the development of weighing display controllers for non automatic scales has made rapid progress.

Weighing instruments are divided into two categories: automatic weighing instruments and non automatic weighing instruments, with non automatic weighing instruments commonly used in the market. It is mainly used in trade settlement and is also the most widely used electronic weighing instrument among the public, such as the commonly used electronic pricing scale, electronic platform scale, and electronic car scale; Automatic weighing devices are commonly found in batching scales, quantitative packaging scales, etc. in industrial and mining enterprises.

Electronic weighing instruments are mainly composed of weighing display controllers, weighing sensors, and electrical controls. The reasonable selection of weighing display controllers and weighing sensors is the key to determining the quality of the factory's products, which determines the accuracy, reliability, and fault factors of the scale.

How to choose electronic scales and weighing display controllers reasonably is the most concerned issue for users.

1electronic scaleThe selection

At present, the accuracy level of the weighing instruments sold in the market is (III) grade scale, with a display division of generally 3000 divisions. The minimum division value varies from 1g to 50 kg depending on the size of the scale (for example, the minimum division value of a 15 kg electronic pricing scale is 5g).

When making a purchase: for example, taking a 15 kg electronic weighing scale as an example; 1. The numbers display stably (without blinking) in both empty and maximum scale states; 2. Place a one-third maximum weight (or a weight close to this value) on the scale surface within 1/4 (divide the scale surface into 4 equal parts) to test whether the numbers at each point are consistent; 3. If possible, place the largest standard weight on the weighing platform to test its accuracy; 4. Take a standard weight close to the maximum weighing capacity (or a heavy object close to this value) and repeat loading for 3 times, testing whether the numbers are consistent each time; 5. Press each function key to test whether the function keys are in good contact and whether the purpose is achieved;

IIweighing instrumentSelection of Display Controller

1. Instrument type

According to their functions, there are single function, multi-functional, and instrument. Such as Shanghai Teraoka, Yaohua, and Sanjing; Changzhou Toledo; The product quality of several weighing display controller manufacturers, including Hangzhou Keli, has been found to be qualified and stable for two consecutive years through national supervision and spot checks; The birth of the new product marks the increasingly strong ability of domestic production of weighing display controllers, with a high starting point and strong functions.

According to the characteristics of the sensor output signal, it can be equipped with sensors that can output analog signals or sensors that can output digital signals. In addition, it has a pricing function and is versatile. The single function instruments in its series include A1 metering type, A2 counting type, etc.

2. The advantages and disadvantages of multifunctional instruments and single function instruments

Multi functional instrument: It has strong adaptability and can be widely used in various non automatic electronic scales and automatic electronic scales. However, due to the long software development cycle and high hardware support costs, its manufacturing cost is relatively high.

Single function instrument: With a short software development cycle and minimal hardware, its manufacturing cost is relatively low.

meter; The manufacturing cost is between single function and multifunctional. In terms of failure rate, multifunctionality is relatively higher.

3. Considerations for instrument selection

a、 Choosing which type of instrument should be based on actual needs, rather than selecting the more functions the better;

b、 Select products that have obtained a production license for measuring instruments;

c、 All technical indicators meet the national standards for weighing display controllers;

d、 The key is to assess whether it meets the safety protection requirements;

4. Domestic weighing display controller dynamics

At present, instruments developed and produced domestically generally only come with one scale, while instruments produced abroad can now be used with multiple scales simultaneously. Its software functions and hardware support can be shared, which relatively reduces manufacturing costs and also reduces management expenses during use.

5. Precautions

When developing new instruments, attention should be paid to the reliability of safety performance, and their technical requirements and measurability should comply with the main provisions of OIML76 recommendation document, especially in terms of anti-interference. This is a general optional inspection, but it can reflect the technical performance of the display and the standardization of various functional requirements.

6. Maintenance and upkeep

Proper use and timely maintenance are the key to extending the service life of equipment. Measuring instruments must be used in the designated environment. To avoid innocent damage to the equipment, it is necessary to read the user manual and technical instructions carefully before operation. Only after confirming that they are correct can they be used.