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How to choose a suitable electronic hanging scale


Electronic hanging scale is a tool for measuring weight, named after its general use of hanging and hanging. Electronic hanging scales are generally composed of mechanical load-bearing mechanisms, weighing sensors, A/D conversion boards, power supplies, wireless transmission and reception devices, and weighing display instruments. So how do we choose? Generally speaking, when choosing an electronic hanging scale, attention should be paid to the following aspects: accuracy, measurement range, functionality, universality, etc. Let's take a look at the introduction below. 1、 Model of electronic hanging scale
There are two models of electronic hanging scales, one is wireless digital electronic hanging scales, and the other is direct view electronic hanging scales.
2、 Composition and structure of electronic hanging scales
Electronic hanging scales are generally composed of mechanical load-bearing mechanisms, weighing sensors, A/D conversion boards, power supplies, wireless transmission and reception devices, and weighing display instruments.
1. Composition of Wireless Digital Electronic Hanging Scale
The wireless digital electronic hanging scale is composed of a scale body and an instrument. The scale body includes a mechanical load-bearing mechanism, sensors, A/D board, wireless transmission device, power supply, and housing. The mechanical load-bearing mechanism includes shackles, hooks, and pins. In addition, in order to ensure the safety and reliability of the system, there are also sensor protection devices.
2. Composition of Direct View Electronic Hanging Scale
Compared with wireless digital electronic suspension scales, the biggest feature of direct view electronic suspension scales is that the instrument functions are directly embedded in the scale body, and the displayed value is reflected through the digital display screen on the scale body.
3、 How to Choose an Electronic Hanging Scale
1. Selection of accuracy
As a measuring instrument, the primary issue is accuracy. Therefore, when choosing an electronic scale, the primary issue is to consider whether the accuracy of the electronic scale can meet the actual work requirements of the unit and meet the national standards for weighing instruments. Generally speaking, as long as it can meet the accuracy requirements of the unit, it is sufficient. It is not too high to pursue high accuracy. Electronic hanging scales with high accuracy have strict working conditions and high prices.
2. Selection of functions
With the popularization of electronic sensor technology and computer network management, various measurement and control devices have emerged. In order to facilitate microcomputer management, it is hoped that the signals output by various sensors will be as consistent as possible to reduce intermediate links. Currently, the commonly used interface signals are standard RS-232 ports and 20mA current loop signals. The general functional settings of an electronic scale are: tare removal (reset), classification accumulation (subtraction), storage of vehicle number, tare weight, printing, communication, overload alarm, changing receiving channel, setting password, etc.
3. Selection of weighing range
When choosing the weighing range, the most easily overlooked one is the minimum weighing range. Electronic scales with a large range can achieve the national accuracy range for small weighing, but the relative error increases. In addition, it is also necessary to consider the issue of matching the electronic scale with the crane, especially whether the lifting rings and hooks of the electronic suspension scale are suitable. It is necessary to carefully read the manufacturer's samples and if necessary, specifically raise them in advance. Of course, it is also important not to overload the electronic hanging scale.
4. Selection of adaptability and security
Users should make requirements based on their own working environment and consider from the perspective of the non-ferrous industry. For electronic hanging scales used for raw material entry and finished product sales, the normal type is sufficient. For those used in electrolysis workshops, consideration should be given to anti magnetism, insulation, and in some cases, waterproofing, moisture-proof, and explosion-proof issues. However, sensors that affect the accuracy of hanging scales generally have an overload force of 150%, and excessive overload may not cause safety issues, But it will affect the accuracy of the electronic scale.
5. Selection of universal interchangeability
Usually, there is more than one electronic hanging scale and other forms of electronic scales used in a unit, and the universal exchange of products and accessories is particularly important. As is well known, from car scales, track scales, electronic platform scales to pricing scales, weight scales, counting scales, and electronic scales, all use resistance strain sensors as sensitive components. Even the force measuring machines used by weighing manufacturers and metrology departments use resistance strain sensors, which makes it easy to achieve network management, greatly facilitating users and reducing maintenance costs.
6. Guarantee of after-sales service
A good product inevitably does not experience a single malfunction during use. When a problem occurs, whether one can quickly troubleshoot it and whether the manufacturer can provide timely service are important considerations when selecting a product. A good product should be designed with the convenience of maintenance in mind. Generally, it should be modular and easy to replace. When problems occur, there should be prompt signs to determine the cause of the fault. If the problem cannot be solved by oneself, the manufacturer should be able to provide on-site service in a timely manner.
7. Economic benefits issues
The economic benefits of using electronic hanging scales include three aspects. Firstly, the purchase price should be compared in terms of performance to price ratio, and excessive pursuit of high and low prices is not allowed; The second is the necessity of using electronic hanging scales, whether it can reduce work steps, save space, reduce costs, and improve product quality and bring benefits; The third is whether the accessories and consumables of the electronic scale are universal, long-term guaranteed, and the price should not be too expensive. Combining these factors is a reference for considering economic benefits and decision-making.

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