With the development of the times, the weighing measurement and control technology has been continuously reconstructed. The valve port scale instrument is the equipment used in industrial production activities. This type of equipment needs continuous development and innovation, so as to have long-term development. For the smooth development of production activities, select the appropriate The measurement and control equipment of the valve is very important. As a device that will be used in measurement and control activities, what should be paid attention to when using the valve scale instrument?

The valve port scale instrument can be used in occasions with precision requirements. The site must have a reliable grounding; once the abnormal fault occurs, the fuse will blow and the safety barrier will fail, resulting in frequent replacement. The basic circuit of the packaging scale controller consists of fast fuse and It is composed of other protection components or circuits, reliable isolation components and a 2-pole safety barrier network with voltage limiting and comb limit functions. The isolated safety barrier realizes switching, analog and Electrical isolation of digital communication. It mainly includes power isolation and signal isolation. Among them, power isolation is composed of high-efficiency DC\/DC converters, and signal isolation has different implementation methods for different types of solid signals.

The weight signal of the batching system is converted into the PLC by the weighing display controller and A\/D respectively. The output of the weighing display device is the parallel BCD code, which is converted into binary code by the program and stored in the data register of the PLC.2 .According to the requirements of the batching process, the feeding process of all raw materials includes the jog process to ensure the accuracy of the batching. The operator of the batching system of the valve port scale instrument inputs the raw material formula, and the formula includes the feeding amount and advance amount of various raw materials. The relationship between them and the batching process is: when the weight of the raw material, the feeding. After the feeding is stopped, the PLC compares the weight of the raw material with the feeding amount, and it is qualified within the tolerance range.

The valve port scale instrument tension controller should be handled with care, especially the small-capacity weighing module made of alloy aluminum elastomer. Any impact or drop may cause great damage to its measurement performance. For large-capacity weighing Generally speaking, the module has a large self-weight, so it is required to use appropriate lifting equipment (such as chain hoists, electric hoists, etc.) as much as possible during handling and installation. The mounting surface of the base for installing the weighing module should be flat. Clean, without any oil film, glue film, etc. The weightless scale instrument installation base itself should have sufficient strength and rigidity, generally higher than the strength and rigidity of the weighing module itself. Whether it is a batching controller or other devices, the correct use is very important.