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What is an electronic truck scale? Truck scale (or called weighbridge) is the main weighing equipment used for bulk cargo measurement. Before the 1980s, ordinary truck scales were usually mechanical truck scales with a purely mechanical structure using the principle of leverage, also known as mechanical weighing scales. In the mid-1980s, with the maturity of high-precision load cell technology, mechanical platform scales were gradually replaced by electronic truck scales with high precision, good stability and easy operation. The electronic truck scale weigh goods via using the principle of strain electric measurement, and the strain gauge is connected to the elastic body of the load cell to form a Wheatstone bridge. When there is no load, the bridge is in equilibrium and the output is zero. When the elastic body bears a load, each strain gauge will produce a strain proportional to the load, and the external load can be measured by the output voltage. So how long is the service life of the electronic truck scale? Some people feel 8 years, some feel 10 years, and the most widely spread is 15 years. There are different opinions. How long is it? I believe that many people cannot give a definite answer on the use time of electronic truck scales. The following we will introduce to you the service life of electronic truck scales, let's have a look! Generally speaking, there is no mandatory obsolescence period for electronic truck scales. How long the electronic truck scale can be used mainly depends on the body of the truck scale. If properly maintained, and derusting and painting every two or three years, it can be used for more than ten years. But this depends on the quality of the truck scale you buy, and certain electronic components must be replaced during use. According to expert surveys, the scrap life of electronic truck scales has a vital relationship with the environment, materials, and structure. In addition, if the weighbridge is properly maintained and used, the service life of the electronic truck scale can be extended. If you buy an electronic truck scale or weighbridge that does not meet your working environment, it will also affect its service life. After countless tests, the I-steel structure electronic truck scale has the longest use time. The channel steel structure electronic platform scale can usually be used for more than ten years, and the U-shaped steel structure electronic platform scale is usually used for eight to nine years, depending on the usage. Facts have proved that after stress testing and careful calculation, we have obtained some data, as follows: the average daily weighing is 200 times, the service life is about 16 years, the average daily weighing is 300 times, the service life is about 12 years, and the average daily weighing is 400 times. , The service life is about 8 years. Lude company still wants to remind you that if your electronic truck scale has reached the age limit for scrapping, it hides many safety hazards and is likely to cause you to lose more! Please change it timely.

As a new generation of truck scale, electronic truck scale is almost the same as digital truck scale. It uses a separate digital junction box to perform A/D conversion on the signal output by the analog sensor, so that the signal from the junction box to the instrument becomes a digital signal. It is used for weighing large goods, such as four-axle trucks, heavy goods, etc. . Today, we will introduce the composition and measurement methods of electronic truck scales. Firstly, let us talk about the structure and working principle of the electronic truck scale: 1. The structure of electronic truck scale. Electronic truck scales are mainly composed of carriers, vehicles, load sensors, connectors, limiters, connection boxes, etc., and can be connected to peripherals such as large-screen displays, computers, and stabilized power supplies. 2. The working principle of electronic truck scale. The objects on the loader are placed on the ground of the loader. Under the action of gravity, the gravity is transmitted to the weight sensor through the loader. The elastic body of the weight sensor is deformed, and the strain gauge bridge on the elastic body loses balance, and then the output electric signal proportional to the weight value is amplified by the linear amplifier, and then converted into a digital signal by A/D. The weight signal is processed by the microprocessor of the computer to display the weight data, configure the printer and print the recorded weight data. Through the computer, the measurement data can be input into the computer management system for comprehensive management. Next, let us talk about the main technical indicators of the electronic truck scale. 1. Measuring object: standard four-axle truck, weighing less than 100T or 150T. 2. Working mode: dynamic connection, bogie metering or vehicle metering. 3. The driving speed of the weighing vehicle is 1-15 km/h, and it can reach 1-20 km/h if the straight line between the left and right sides of the weighing platform exceeds 50 meters. 4. The sensitivity of the measuring counter: When measuring the weight statically, add or subtract 20kg, and the change exceeds 10kg. 5. The zero drift should be less than 10 kg and last for 4 hours. 6. Measurement accuracy: please refer to the relevant regulations of JJG234-90 of the National Metrological Verification Regulations of the People's Republic of China. 7. Output mode: color display, digital output, display speed, weight data is easy to download, used to make tables, weighing results can be stored in the computer for a long time, and then statistical information can be inquired at any time. 8. Power supply: The power consumption of this device does not exceed 500 watts. The above is the structure, working principle and main technical indicators of the electronic truck scale shared by Lude company. Through the sharing of us, do you have a better understanding of the electronic truck scale? See you next time!

Verification and Maintenance of Electronic Truck Scale Electronic truck scale (static) is one of the most widely used weighing instruments in our country. Electronic truck scale is a large scale, which is mainly used for weighing the weight of vehicles and used to weigh bulk goods in factories, mines, enterprises, etc.,. Generally speaking, an electronic truck scale is composed of a load-bearing device (scale body), a load conversion mechanism (weight sensor) and a load measuring device (weighing display instrument or weighing display). 1.Electronic truck scale verification (1)The verification of electronic truck scale is divided into first verification, follow-up verification and in-use verification. ①The first verification is the verification of the electronic truck scale that has not been verified. The first verification items are divided into zero setting and tare equipment accuracy test, weighing test, tare measurement test, partial load test, discrimination test and repeatability test . ②Subsequent verification is also called subsequent verification, including regular verification and post-maintenance verification. The verification items are the same as the first verification items, and the maximum allowable error is the same as the maximum allowable error of the first verification. ③The inspection items in use are the same as the subsequent verification items, and the maximum allowable error is twice the maximum allowable error of the first verification. Before verification, please check whether the load cell, the weighing display and the scale body are in a standard state or a specific state. After the components pass the inspection, the electronic truck scale should be fully heated before continuing to operate. The standard instrument used for verification is the standard weight, and its maximum allowable error should not be greater than 1/3 of the maximum allowable error of the electronic truck scale in the corresponding weighing. When the total mass of the standard weight cannot reach the maximum weight of the truck scale, other constant loads can be used instead of the standard weight, provided that the standard weight should be 50% of the maximum weight. 2.Maintenance of electronic truck scale ①Under normal circumstances, you should carefully observe whether the scale body is deformed or corroded, clean up the debris around the scale body and the bottom of the scale in time, and check whether the wiring is loose or broken. ②It is forbidden to perform arc welding operations on the weighing platform. If arc welding is required, please disconnect the signal cable from the weighing display controller. ③Pay attention to strengthen the daily inspection of the sensor cable and observe whether the cable is damaged, squeezed or broken to ensure that the cable is intact. ④If the weighing indicator is not used for a long time (more than one month), it should be energized and checked according to environmental conditions to prevent moisture or other harmful gases. ⑤When the weighing indicator is not used for a long time, the power supply must be cut off when changing the fuse or moving the position. ⑥Before turning on the power of the system, the reliability of the grounding equipment of the power must be checked, and the power must be cut off before turning off the power. ⑦Before using an electronic truck scale, please check whether the scale body is flexible.

When an object is placed on the weighing pan, pressure is applied to the sensor, the sensor is deformed, so that the impedance changes, and the excitation voltage is changed at the same time, then it outputs a changing analog signal. The signal is amplified by the amplifier circuit and output to the analog-to-digital converter. It converted into a digital signal that is easy to process, and the digital signal outputs to the CPU operation control. The CPU outputs this result to the display according to keyboard commands and programs. Until this result is displayed. Electronic scales, just like the ordinary electronic equipment. Firstly we must understand the usage of each button on the instrument (see the manual for details). We should be familiar with the basic functions such as zero, peel, clear, print, etc. Electronic scales are measuring instruments. Before weighing, we must know the measuring range and the division value to avoid overloading of the object, causing the sensor to be crushed; secondly, ensure that the weighing platform is placed horizontally; and place the item as much as possible in the center of the weighing platform, and gently place it in the center of the weighing platform. Usually, we should maintain the electronic scales. Different brands of electronic scales is operated differently, but the basic principles are the same. There are many things that should be noticed during operation. Mainly pay attention to moisture-proof and waterproof measures for sensors, instruments, and junction boxes. If there is a mechanical failure, check the limit of the scale regularly. If there is friction and jam between the scale and the limit, please adjust the limit value to achieve the best weighing state. In addition, when the electronic scale is not used for a long time, it should be charged every three months to avoid battery damage.