Instantaneous Belt scale is composed of four parts, such as weighing frame, weighing sensor, velocity sensor and display instrument. The weighing instrument integrates the speed signal and the weighing signal to obtain the instantaneous flow rate and the cumulative amount. The speed sensor is directly connected to the large diameter speed measuring drum and provides a series of pulses, each representing a belt movement unit, and the frequency of the pulse is proportional to the belt speed. The weighing instrument receives signals from the weighing sensor and the speed sensor, and obtains an instantaneous flow value and cumulative weight value through integral calculation, and displays them respectively.

Electronic crane scales are mainly used as the core chip to measure the force, the main part of the force measurement principle for hook scales are bent elastic steel, deformation of the load cell and the scale body is an integrated unit, the weighing scale unit is hung on the hook of the lifting machinery, powered by rechargeable batteries; the display unit is placed on the ground on the operating platform, the operating platform can be 100-400m away from the site of the crane. The operating platform is located on the ground at a distance of 100-400 m from the site of the lifting machine, and the electrical signals of the weight are transmitted in the form of coded carrier waves through the radio transmission device on the weighing unit, and the receiving device on the weighing controller unit accepts the signals and sends them to the microprocessor for processing, and then finally displays the mass of the object to be weighed or prints out a record.

The hazardous waste weighing and packaging machine is composed of an input mechanism, a weighing platform mechanism, a weighing sensor, a wiring box, a weighing instrument to process the analog signals from the sensor, a PLC to control the entire weighing process, a touch screen and other electrical components. The original input mechanism of the weighing system of the packaging machine includes a hopper, a double-stroke cylinder, a support, and a discharge door. Its feature is that the opening and closing of the discharge door of the input mechanism is driven by a double-stroke cylinder, and different electrical outputs can achieve three states of "semi-closed", "fully closed", and "fully open" for the discharge door.

The weighing conveyor utilizes a load cell made of strain resistors for metering. The bearing surface generates a certain amount of pressure, and the material on top of the belt passes through the bearing surface of the lever device. This pressure is transmitted to the load cell through the lever device, and the control device will amplify and process the weight pressure signal sensed by the load cell, and then display it in a digital way. At the same time can be displayed on the digital signal for external human control, so that the measurement of belt scales according to people's actual requirements of the amount of feed automatically change the speed of the belt fast and slow, the given amount of feed tracking, so as to form a belt on the material more, slower, less material faster, no material when the speed of the fastest, and overloaded when the slowest and even will stop the control characteristics.

The weighing conveyor utilizes a load cell, a weighing controller, and an inlet and outlet conveyor. The load cell is used to collect the weight signal and send it to the controller for processing. The in-feed conveyor is used to provide adequate spacing between the products by means of speed. The outfeed conveyor is used to transport the finished product out of the weighing area. When the controller gets the weight signal of the product, the system will compare it with the pre-set weight range and sort the product, the sorting type will be different according to the application.

Weighing conveyor by the feeding equipment will be the material in batches according to the set value into the weighing hopper for weighing, by the four located in the support frame of the load cell support. Mainly with the help of motor deceleration to promote the roller sprocket, and then to achieve the conveyor of food stability, for speed, is through some configuration to frequency conversion speed regulation, power roller conveyor use up, it saves a lot of manpower and material resources, and improve the operating time.

The weighing sensor is stretched and thinned under the tension, and then the resistance increases, that is, the metal resistance changes with the strain. The weighing sensor is a conversion device used to convert the weight signal or pressure signal into the electric signal. The construction principle of the weighing sensor is that the metal resistance has the characteristic of blocking the current flow.

Self-control Electronic floor scale is a weighing equipment integrating automatic weight measurement, dosing and alarm. It is an automatic weighing system, which consists of weighing platform, electrical control system, pneumatic valve and so on. It is characterized by the following features: LED display on the silo and weighing circuit board next to the LED display, which realizes the functions of automatic data collection, automatic recording and printing, and one-key test. Through the automatic data collection and uploading server system, it provides valuable basic data for the big data research currently being carried out.

The peristaltic electronic floor scale adopts a self-developed precise feeding screw feeder as the feeding equipment. The screw feeder is equipped with a buffer bin by itself, and the buffer bin is provided with stirring blades, which can effectively prevent the material from clumping and arching. The screw conveyor blades adopt a variable pitch design to control the material conveying height to gradually decrease from thick to thin, ensuring that the material is evenly, smoothly and accurately fed into the carrier of the weighing system. The weighing instrument serves as the human-machine interface of the entire system, completing all system parameter Settings, process monitoring and data recording. Another one serves as a slave station, relying on the master station, to be in charge of data setting and process monitoring in the rear control room.