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Zhengzhou Dimiao Measurement and Control Technology Co., Ltd
High precision belt scale
NegotiableUpdate on 05/07
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Overview
The high-precision belt scale mainly consists of three parts: the scale frame, speed sensor, and accumulator. Using a belt scale to monitor the continuous production process can effectively control the continuous feeding process of mixed ore, solvent, fuel, return ore, quicklime, and finished ore. They have become a reliable guarantee for continuous online weighing of dispersed solid granules; It combines the advantages of simplicity, ready to use, low maintenance (no moving parts), long-term stability, and good repeatability. They demonstrate minimal hysteresis and excellent linearity in practical work, and are not affected by lateral forces. All weighing sensors have overload protection function.
Product Details
Technical parameter introduction:
Introduction
Belt scales help you better use raw materials, control the total amount, and ensure continuous production.High precision belt scaleEasy installation and minimal maintenance. The measurement values have high repeatability, high accuracy, small hysteresis, good linearity, and are not affected by lateral forces. The weighing sensor has good overload protection characteristics.
A typical belt scale system includes a weighing bridge with a weighing sensor, an integrator, and a belt speed sensor. The weighing sensor detects the weight of the material on the belt and sends the signal to the integrator. The integrator also receives electronic pulse input signals from the belt speed sensor at the tail or steering pulley. Through these two signals, the integrator calculates the throughput of materials on the belt using the formula: weight x speed=flow rate.
Operating principle
High precision belt scaleOnly measure the vertical component of the force acting on the belt. When the material moves through the belt scale with the conveyor belt, it applies a force proportional to the weight of the material to the weighing sensors through the rollers, and its resultant force acts on each weighing sensor and is detected through strain resistance. The strain resistor is excited by an integrator, generating an electrical signal proportional to the belt load and sending it to the integrator.
The vertical displacement of the weighing sensor is limited by the forward overload emergency stop contained in the belt scale or weighing sensor. This emergency stop protection can provide overload protection for the weighing sensor.
MMI belt scale with a design accuracy of 0.25%
Weighing sensor: Two pairs of triple beam parallelograms with temperature compensated stainless steel sensors
Typical features: Large load, high-precision single roller scale, used for process and transfer control
Typical application: Control the mixing ratio of stone materials
Monitor the feeding amount of the grinding machine
Track daily production volume and total quantity
Monitor the operation of mines/coarse and fine ores or concrete
Typical industries: cement, food, mining, minerals, coal, chemical industry
***High load: 5000t/h (when the belt speed is * * * high)
***Belt speed: 4.0m/s
***Large particle size:>150mm
Rated belt width: 450-2400mm (CEMA or standard metric conveyor)
Roller diameter: 50-180mm
***Small weighing section: 457mm
Accuracy: ± 0.25% or higher
Range ratio: 5:1
Material: Low carbon steel painted or stainless steel
Weighing sensor: equipped with 2 triple beam parallelogram stainless steel sensors and temperature compensation in one weighing rack
Standard accessory: Scale frame
Features: Compared with pivot scales, MSI responds quickly, has fewer rollers, and has higher weighing accuracy
BW500 integrator
Function Introduction:
BW500 is an integrator designed with a microprocessor as its core, which can be used in conjunction with Siemens and similar belt scales or batching scales. The integrator processes the speed and weight signals from the belt scale and displays them on the LCD after processingOutput analog mA signal, relay alarm output and remote display.
BW500 supports Dolphin Plus software and Modbus protocol, with two RS232 and one RS485 interfaces.
BW500 supports SmartLinx communication system.
BW500 Performance Features:
User interface for feature *: Multi line LCD display, instrument buttons.
Instrument input/output: Two way integration, five programmable relay outputs, five programmable inputs, two programmable analog inputs for PID control, three programmable analog outputs for flow, weight, speed, and PID control.
Windows operating system and industrial communication: two RS232 interfaces and one RS485 interface.
Individual interfaces can be used for Dolphin, Modbus ASCII, Modbus RTU, printers, SmartLinx compatible systems.
Control and operation functions: load linearization, automatic zeroing, PID control, batch control, manual and automatic operation, PID control requires analog I/O board (optional)
MSI Belt Scale
MSI is one of the single roller belt scales, suitable for online weighing of large quantities of raw materials and products in the processing industry. MSI monitors different granular materials such as flour, sand, sugar, and coal. Its performance has been validated in a wide range of harsh environments around the world, from mining, quarrying, and mining industries to power plants, steel, food processing, and chemical industries.
Durable and reliable
For situations where efficient and dynamic online weighing of materials on belt conveyors is required, the robust single roller MSI belt scale can provide measurement reliability. Even in harsh environments, MSI can be connected to various excellent electronic integrators to provide continuous readings of flow rate, accumulation, speed, and load. Easy installation, low maintenance, and high repeatability make MSI the top choice for online belt weighing of solid bulk materials. At any time, it can provide * * * and high repeatability effects.
Easy installation
This compact belt scale can be applied to belt conveyors with limited space. Because of its simple installation mode, users can save a lot of costs compared with traditional systems. The weighing bracket is conveniently installed on the belt conveyor and fixed on the stressed beam (as shown in the figure) through four bolts and an existing roller. Installation is fast and simple, taking only a few hours. Its universal structure can be used for any existing belt weighing system and can be quickly installed to replace old-fashioned weighing systems.
Excellent precision and repeatability
The design of the weighing frame and the specialized parallelogram sensor for the belt scale ensure accuracy and repeatability, even in applications where the product load is uneven or the belt speed is relatively fast. ***The degree is usually 0.5%, but in many applications, the accuracy is better than 0.5%.
Low maintenance cost
Due to the lack of movable components in MSI, potential maintenance issues have been eliminated, and wear and replacement of the pivot and lever are now a thing of the past. All you need to do is conduct regular verification checks. And with a mechanical stop protection system, it can prevent accidental overload and prevent serious damage.
Rapid response to product load
The structure of MSI is different from any other single roller belt scale. The force sensor adopts a parallelogram structure, which can quickly respond to vertical forces and protect the response speed when the load changes. This can ensure its high precision and good repeatability. For applications with fast belt speeds and uneven product loads, high precision and good repeatability can still be achieved.
