Master the types of weighing instruments in five minutes

Along with the development trend of the period, traditional weighing equipment has become less and less suitable for the needs of social and economic development, which has promoted the development trend of weighing equipment to a certain level. The technical development of the weighing instrument is the driving force of the key development trend. The basic technical principles are all scientifically proven, but most of them have advantages and disadvantages. This must be considered by the sales market. It is everyone's preference that has application value. Weighing instruments are generally used to accurately measure net weight, which is an indispensable part of everyone’s daily life. We can often see that, for example, at the counter of a shopping mall or on a highway, the weighing instrument is composed of a polyurethane elastomer with a strain gauge. Generally made of steel or aluminum, it is very strong and has little elastic deformation. As the term polyurethane elastomer is often used to say, steel or aluminum can cause a certain level of deformation under load, but then it will return to its original position and cause a ductile response to each load. This very small change can be based on Strain gauge is obtained. The strain gauge is an electric conductor that is bent and firmly adhered to the base steel plate. When the base steel plate is driven, it stretches together with the electric conductor. When it becomes smaller, it will shorten, which will cause a resistor in the electric conductor. When the change occurs, the strain gauge is firmly fixed on the polyurethane elastomer, so the same deformation will occur. For the weighing gauge, this strain gauge is placed in the Wheatstone bridge, which means connecting four strain gauges Together to create a bridge, and the direction of the measuring force is aligned with the two ends of the measuring grid. If the object is placed on the weighing instrument or suspended training on the weighing instrument, the net weight of the object can be clarified. The estimated load of the weighing instrument is always along the center of the earth, that is, the direction of gravity. Although the force in the direction of gravity has a similar design, the weighing instrument is not like this. The weighing instrument can capture the load generated in all directions, and its gravity direction is irrelevant to the installation method. Types of weighing instruments: There are various types of weighing instruments to integrate different applications. Common weighing instruments include: 1. Spot weighing instrument: generally used for platform scales placed under hanging objects. 2. Bending beam weighing instrument: Place several weighing instruments under the steel frame structure, and place weighing standard weights from the top. 3. Liquid level sensor: Place several large and medium-sized weighing instruments under the steel frame structure, and load the crane from the top. 4. Supporting force weighing instrument: The suspension training of hanging objects is directly under one or several sensors. Regardless of which type of weighing instrument is used, precision plays a very important role. The weighing instrument has different rated value categories (the rated value category refers to the larger estimated load) and accuracy levels, and the strain force technology of the weighing instrument The precision level of is generally C and D, and the strain force weighing instrument with electronic device calibration function has a higher precision level. Therefore, the weighing must be rigorous and accurate. For low-use value goods (such as gravel or gravel), the weighing instrument does not need to be very accurate, D-level precision is sufficient. On the other hand, for drugs, maximum precision is required. The weighing accuracy of the most general daily necessities such as meat foods, fruits and vegetables is C level. Mechanical automation or building decoration materials also require C level precision, in order to better guarantee the weighing instrument In field work, it is generally necessary to carry out adjustment and calibration not only in the processing plant, but also in the installation position.

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