Weighing sensor is regarded as the heart part of the weighbridge, and its performance largely determines the performance and stability of the weighbridge. When people install the weighbridge, they often encounter such a problem: how to select sensors? Here, some suggestions on how to select sensors scientifically and practically are put forward.
1. Consider the actual working environment of the sensor
The working environment at the sensor is crucial to how to select the sensor. It is related to whether the sensor can work normally, the safety and service life of the sensor, and even the reliability and safety of the whole weighbridge.
2. Selection of sensor quantity and range
(1) The number of sensors is selected according to the purpose of the weighbridge and the number of points that the scale body needs to support (the number of support points should be determined according to the principle of making the geometric center of gravity of the scale body coincide with the actual center of gravity). Generally speaking, several sensors are selected for the scale body with several supporting points, but for some special scales such as electronic hook scales, only one sensor can be used. For some electromechanical scales, the number of sensors selected should be determined according to the actual situation.
(2) The selection of sensor range is based on the comprehensive evaluation of the weighing value of the scale, the number of selected sensors, the weight of the scale body, the possible bias load and dynamic load. In general, the closer the sensor range is to the load distributed to each sensor, the higher the accuracy of its weighing. However, in actual use, since the load applied to the sensor is not only the object to be weighed, but also the self weight, tare weight, eccentric load, vibration and shock of the scale body, many factors should be considered when selecting the sensor range, Ensure the safety and life of the sensor.
3. Consider the application range of various types of sensors
The selection of sensor type mainly depends on the type of weighing and installation space to ensure proper installation and safe and reliable weighing; On the other hand, the manufacturer's suggestions should be considered. The manufacturer will generally specify the scope of application of the sensor according to the characteristics of the sensor such as stress, performance indicators, installation form, structural form, elastomer material, etc. For example, the aluminum alloy cantilever beam sensor is applicable to the pricing scale, platform scale, desk scale, etc; The alloy steel cantilever beam sensor is suitable for hopper scale, electronic belt scale, sorting scale, etc; Alloy steel bridge sensor is suitable for track scale, platform scale, overhead crane scale, etc; The column sensor is suitable for truck scale, dynamic track scale, large tonnage hopper scale, etc.
In a word, the selection of load cell is a very important work. If the selection is not good, it can not meet the design requirements, resulting in huge economic waste. Therefore, in product design, we should pay attention to the combination of theory and practice, and not stick to one aspect.
Jiangmen Lidong Electronic Weighing Instrument Co., Ltd. is a Jiangmen electronic weighing instrument manufacturer that specializes in the development and production of weighbridge, electronic weighing instrument, electronic truck scale, electronic ground scale, axle weight scale, industrial automatic packaging equipment, automatic batching equipment and other large-scale industrial weighing equipment. Looking forward to your cooperation!
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