How to choose the electronic weighing instrument reasonably: The convenient use of the electronic weighing instrument has been used in various industries and has been widely used. It not only has high-precision measurement, but also realizes multi-function and multi-purpose. At present, domestic manufacturers of electronic weighing instruments have grown to hundreds, mainly non-automatic weighing instruments and automatic weighing instruments. Electronic weighing instruments have entered the period of self-development and design from the imported technology in the past, especially the development of weighing display controllers for non-automatic weighing instruments. Weighing instruments are divided into two major categories: automatic weighing instruments and non-automatic weighing instruments, and non-automatic weighing instruments are commonly used in the market. It is mainly used for trade settlement, and is also the electronic scale that is most in contact with the masses, such as the commonly used electronic price scales, electronic platform scales and electronic truck scales; automatic scales are generally more common in the batching scales and quantitative packaging scales of industrial and mining enterprises. Electronic weighing instrument is mainly composed of weighing display controller, weighing sensor and electric appliance control. The reasonable selection of weighing display controller and weighing sensor is the key to determine the quality of the factory. It determines the accuracy and reliability of the scale And parameters such as failure factor. How to reasonably choose electronic weighing instruments and weighing display controllers is the most concern of users.
1. The purchase of Dingli Electronic Weighing Apparatus The accuracy scale of the weighing instruments currently on the market is (III) grade scale, the display division is generally 3000 divisions, and the minimum division value varies from 1g to 50 kg according to the size of the scale. (For example, a 15 kg electronic pricing scale has a minimum division value of 5g). When purchasing: For example, take the 15 kg electronic price scale as an example; 1. The numbers are stable in the empty scale state and the maximum weighing state (without blinking); 2. Use one-third of the maximum weighing weight ( Or close to this value) placed on the scale table 1/4 (the scale table is divided into 4 parts) within the range of each point to test whether the numbers are consistent; 3. If possible, take the maximum weight of the standard weight on the scale table Test its accuracy; 4. Take a standard weight close to the maximum weight (or a weight close to this value) and repeat loading 3 times to test whether the numbers are consistent; 5. Press each function key to test whether each function key is in good contact Whether it achieves its purpose; Second, the selection of weighing display controller 1. The type of instrument is divided according to its function: there are single function, multi-function and special instrument. Such as Shanghai Sigang, Yaohua, Trinity; Changzhou Toledo; Hangzhou Keli and other weighing display controller production plants have been qualified by the national supervision and random inspection for two consecutive years and the quality is relatively stable; the birth mark of new products The ability to produce weighing display controllers in China is getting stronger, with a high starting point and strong functions. According to the characteristics of the sensor output signal, it can be equipped with sensors with analog output signals and sensors with digital output signals. In addition, it has a pricing function and has a multi-purpose table. The single-function meters in its series are A1-metering type, A2-counting type and so on.
2. Advantages and disadvantages of multi-function instrument and single-function instrument Multi-function instrument: It has strong adaptability and can be widely used in various non-automatic electronic weighing instruments and automatic electronic weighing instruments. But the software development cycle is long and the hardware support cost is high, so its manufacturing cost is high. Single-function instrument: software development cycle is short and hardware is less, so its manufacturing cost is lower. Special instrument; manufacturing cost is between single function and multi-function. In terms of usage failure rate, multi-function is higher in comparison.
3. Problems to be considered when selecting instruments a. The type of instruments should be selected based on actual needs, rather than the more functions, the better; b. The products that have obtained production licenses for measuring instruments; c. All technical indicators are in compliance with weighing National standards for display controllers; d. It is important to assess whether they meet the safety protection requirements; 4. International and domestic weighing display controller dynamics The instruments currently developed and produced in China are generally equipped with only one meter per scale, while instruments produced abroad are capable of A table is equipped with multiple scales at the same time. Its software functions and hardware support can be shared, which relatively reduces manufacturing costs and reduces administrative costs during use.
5. Precautions When developing new instruments, attention should be paid to the reliability of safety performance. The technical requirements and meterability should meet the requirements of the main provisions in the OIML 76 international recommendation document, especially in 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 maintenance. The correct use and timely maintenance are the keys to extending the service life of the equipment. The measuring instruments must be used in the specified environment. To avoid innocent damage to the equipment, the user manual and technical instructions must be thoroughly read before operation. After use.
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