The speed control scale is a process in which two or more materials are automatically added to the mixing and dosing tank by a certain weight ratio, and then automatically discharged after mixing to meet the predetermined requirements. Weighing is composed of 3 or 4 Weighing modules, each group of weighing modules connected in parallel or in series by 4 or 6 signal lines to the signal line junction box of the weighing module, and then access to the TR200H weighing module signals are 2MV/V, high and low sensitivity signal transmission, must be identified through the weighing terminal converted to analog signals, sent to the analog signal acquisition module of the PLC; the entire feeding system without the need for a main control console, only weighing modules, junction boxes, weighing meters, weighing instruments, and the main control center, the weighing module, junction boxes, weighing instruments, and the main control center, and the main control center. The whole feeding system does not need the main console, but only the weighing module, junction box, weighing instrument, wiring cabinet, PLC, analog input module, communication module, touch screen, HZS (HLS) series of control dual machine synchronous control, the main hardware consists of two computers, high-performance microcomputer controllers, human-computer interface, high-speed and high-precision weighing unit and the international famous low-voltage electrical components, combined with self-developed professional control software to achieve the automation of the control of the chemical liquids production. It has high metering precision and low manufacturing cost.

Speed regulating scale is a high-tech product integrating feeding, conveying, weighing, measuring and quantitative control. It can adapt to various industrial production environments of powder, granular, lumpy bulk materials continuous feeding measurement and automatic control system. Speed scale is composed of conveyor frame, ring skirt tape, motor reducer, frequency converter, weighing bridge, load cell, speed sensor, weighing instrument, control cabinet and so on.

Speed scale to pass through the material, through the weighing scale frame to detect the weight, to determine the weight of the material in the silo spiral; mounted in the tail of the digital speed sensor, continuous measurement of the operating speed of the Feeder, the speed sensor pulse output is proportional to the speed of the feeder; speed signals and weight signals are sent to the feeder controller, the microprocessor in the controller to process, produce and display the cumulative volume/instantaneous This flow rate is compared with the set flow rate. The flow rate is compared with the set flow rate and the controller outputs a signal to control the frequency converter, thus realizing the requirement of quantitative feeding.

The speed regulating scale communicates with PLC through MPI interface to give all kinds of control parameters, control instructions, control PLC's action, read PLC's status information for the screen to dynamically display real-time status of the equipment in the process, weighing data, alarm information. It has the functions of system security setting, recipe management, production report query and printing, scale zero calibration, scale parameter setting, etc. Accepts the instruction from computer, controls the process equipment for dosage operation, and generates all kinds of system status symbols (e.g. operation, fault, open, close, etc. signals) for querying by the host computer.