Editorial Technical Reference

Weighing System

This page explains how Weighing System is classified within Basic Metal Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A precision measurement subsystem within an alloy feeder that determines the mass of alloy materials being dispensed.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Weighing System

Definition
The Weighing System is a critical component of the Alloy Feeder System responsible for accurately measuring the weight of alloy materials (such as aluminum, magnesium, zinc, or other metal alloys) during the feeding process. It ensures precise material dosing according to production recipes, directly impacting product quality, material efficiency, and process control in metal manufacturing operations. The system typically uses load cells or strain gauge sensors that convert the force exerted by the material weight into an electrical signal. This signal is processed by a controller or indicator to display and transmit the weight measurement. In continuous feeding applications, it may employ belt scales or loss-in-weight technology, while batch systems use platform or hopper scales. The Weighing System is designed for integration into automated production lines, providing real-time weight data to a PLC or other control system via a 4–20 mA analog output or RS-485 communication with Modbus RTU protocol. It operates within a temperature range of -10 to 50 °C and requires a stabilized 24 V DC supply (±10%). The system's accuracy class is III per OIML R76, with a weighing capacity of 0–100 kg and a resolution of 0.01 kg. Repeatability is ±0.02 kg, and linearity is ±0.03 kg. The load cell is made of 17-4PH stainless steel (ASTM A693), and the housing and contact parts are stainless steel, with aluminum alloy for structural frames. The system has an ingress protection rating of IP54–IP65 (IEC 60529) and consumes ≤5 W. The net weight depends on platform size and capacity, typically 15–25 kg. For any specific application, verify model-specific values and standards with the legal manufacturer or supplier.
Working Principle
The Weighing System operates on the principle of converting gravitational force into an electrical signal. Load cells or strain gauge sensors deform under the weight of alloy material, causing a change in electrical resistance. This change is measured and converted into a weight reading by a controller or indicator. In continuous feeding, belt scales or loss-in-weight systems measure the rate of material flow, while batch systems use platform or hopper scales for discrete weighing. The system provides a 4–20 mA analog output or RS-485 digital communication for integration with PLCs. Calibration and verification are essential to maintain accuracy within specified repeatability and linearity limits.
Common Materials
Stainless steel (for housing and contact parts), Aluminum alloy (for structural frames), High-grade steel (for load cells and mechanical parts)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Weighing Capacity0–100 kgMaximum mass of alloy material per batch
Resolution0.01 kgSmallest readable mass increment
Accuracy ClassIIILegal metrology class for industrial scalesOIML R76
Repeatability±0.02 kgMaximum deviation between successive weighings
Linearity±0.03 kgDeviation from ideal straight-line response
Operating Temperature-10–50 °CBeyond this range accuracy may degrade
Supply Voltage24 ±10% V DCStabilized DC required for consistent performance
Power Consumption≤5 WIncludes load cell excitation and electronics
Ingress ProtectionIP54–IP65IP65 for dusty/wet environmentsIEC 60529
Load Cell Material17-4PHStainless steel for corrosion resistanceASTM A693
Output Signal4–20 mAAnalog current loop for PLC integration
Communication InterfaceRS-485Modbus RTU protocol supportedTIA/EIA-485
Net Weight15–25 kgDepends on platform size and capacity

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Load Cell
    Converts mechanical force (weight) into electrical signal for measurement
    Material: Stainless steel with strain gauges
  • Weight Indicator/Controller
    Processes signals from load cells, displays weight, and controls feeding operations
    Material: Electronic components in protective housing
  • Weighing Platform/Hopper Part
    Container or surface that holds the alloy material during weighing
    Material: Stainless steel or carbon steel
  • Signal Cable
    Transmits electrical signals between load cells and controller
    Material: Shielded copper cable with protective jacket

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 0.5 bar gauge (typical feeder environment)
other spec: Flow Rate: 0-100 kg/min (typical alloy dispensing), Slurry Concentration: Not applicable (dry granular/pelletized alloys), Accuracy: ±0.1% of full scale, Resolution: 0.01 kg
temperature: 0°C to 50°C (operating), -10°C to 60°C (storage)
Media Compatibility
✓ Ferroalloys (FeSi, FeMn) ✓ Non-ferrous master alloys (Al-Ti, Cu-Cr) ✓ Pure metal additives (Mg, Ca, Si)
Unsuitable: Highly corrosive molten metal environments (e.g., direct contact with molten aluminum with high chlorine flux)
Sizing Data Required
  • Maximum alloy dispensing rate (kg/hr)
  • Required weighing accuracy (% of full scale)
  • Alloy material density and particle size distribution

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Load cell drift
Cause: Environmental factors (temperature fluctuations, moisture ingress) or mechanical overload causing permanent deformation of strain gauges, leading to inaccurate weight readings over time.
Signal interference/noise
Cause: Poor cable shielding, improper grounding, or electromagnetic interference from nearby equipment disrupting the low-voltage signals from load cells to the indicator/controller.
Maintenance Indicators
  • Inconsistent or fluctuating weight readings under static load conditions
  • Audible grinding or scraping noises during platform movement or load application
Engineering Tips
  • Implement regular calibration schedules using certified test weights and environmental compensation adjustments to maintain measurement accuracy
  • Install proper cable conduits with adequate shielding, maintain clean/dry junction boxes, and ensure all electrical connections are secure and corrosion-free

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
OIML R76-1 - Non-automatic weighing instruments EN 45501:2015 - Metrological aspects of non-automatic weighing instruments

Quoted from the published standard.

Manufacturing Precision
  • Accuracy class: ±0.1% of applied load
  • Repeatability: ≤0.05% of capacity
Quality Inspection
  • Calibration verification with certified test weights
  • Environmental testing (temperature, humidity, vibration)

Manufacturers of Weighing System

3 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Guangdong Kenwei Intellectualized Machinery Co., Ltd.
Zhongshan, Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Hiweigh Technologies Co., Ltd.
Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Labirinth Microtest Electronics (Tianjin), Ltd.
Tianjin, CN
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
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Frequently Asked Questions

What is the weighing capacity of this system?

The weighing capacity is 0–100 kg per batch, as listed in the directory. However, the actual capacity may vary depending on the specific model and configuration. Always verify with the manufacturer or supplier for your application.

What communication interfaces are available?

The system provides a 4–20 mA analog output and an RS-485 interface supporting Modbus RTU protocol. These allow integration with PLCs and other control systems. Confirm compatibility with your existing equipment.

What is the accuracy class of the weighing system?

The directory lists accuracy class III according to OIML R76. This is a legal metrology class for industrial scales. However, compliance must be verified with the manufacturer or supplier for the specific model.

What are the environmental operating conditions?

The system operates in a temperature range of -10 to 50 °C and has an ingress protection rating of IP54–IP65 (IEC 60529). It is suitable for dusty or wet environments, but always check the exact ratings for your model.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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