Editorial Technical Reference

Signal Conditioner

This page explains how Signal Conditioner is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Electronic device that amplifies, filters, and converts weak electrical signals from load cells into stable, standardized outputs for measurement systems.

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

Product Specifications

Technical details and manufacturing context for Signal Conditioner

Definition
A signal conditioner is a critical component in load cell scale systems. It processes the low-level millivolt signals generated by strain gauges in load cells. The device amplifies these weak signals to usable levels, filters out electrical noise and interference, provides excitation voltage to the load cell, and converts the analog signal to a digital format compatible with display units, controllers, or data acquisition systems. By maintaining signal integrity throughout the measurement chain, it ensures accurate and reliable weight measurement.

Typical input signal range is 0–20 mV/V, suitable for load cells with sensitivity within this range. The output signal is commonly 4–20 mA, a standard analog output for PLCs. Accuracy is ±0.05% of full scale, including linearity, hysteresis, and repeatability. Supply voltage is 24 V DC ±10%, accommodating wide industrial power variations. Operating and storage temperature ranges are -40 to 85 °C, with non-condensing conditions for storage. Ingress protection is IP54–IP65 per IEC 60529, making it dust-tight and water-resistant. Isolation voltage is 1500 V AC between input, output, and power, per IEC 61010. Load resistance for 4–20 mA output is 0–500 Ω. Response time is ≤10 ms for dynamic measurements. Dimensions are 100×75×25 mm, compact for DIN-rail mounting, and weight is ≤200 g.

This signal conditioner is designed for use in industrial weighing applications. It is not a standalone measurement device but a component that interfaces between load cells and control systems. When selecting a unit, verify that the input range, output type, and environmental ratings match your specific load cell and application requirements. Always confirm model-specific values and standards with the legal manufacturer or supplier, as the listed parameters are reference ranges for the product category.
Working Principle
The signal conditioner receives differential voltage signals, typically 0–20 mV, from load cell strain gauges. It amplifies these signals using precision instrumentation amplifiers with high common-mode rejection. Low-pass filtering eliminates high-frequency noise. The device provides stable excitation voltage, usually 5 V or 10 V DC, to power the load cell's Wheatstone bridge. It may include analog-to-digital conversion, temperature compensation, and calibration functions to produce standardized output signals such as 0–10 V, 4–20 mA, or digital protocols like RS-485.
Common Materials
Printed Circuit Board, Integrated Circuits, Electronic Components, Aluminum Housing
Technical Parameters
ParameterTypical rangeNotes & selection driver
Input Signal Range0–20 mV/VFor load cells with sensitivity within this range
Output Signal4–20 mAStandard analog output for PLCs
Accuracy±0.05 % FSIncludes linearity, hysteresis, and repeatability
Supply Voltage24 ±10% V DCWide input range for industrial power
Operating Temperature-40–85 °CSuitable for harsh environments
Storage Temperature-40–85 °CNon-condensing
Ingress ProtectionIP54–IP65Dust-tight and water-resistantIEC 60529
Isolation Voltage1500 V ACBetween input, output, and powerIEC 61010
Load Resistance0–500 ΩFor 4–20 mA output
Response Time≤10 msFor dynamic measurements
Dimensions100×75×25 mmCompact DIN-rail mount
Weight≤200 gLightweight for easy installation

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
  • Instrumentation Amplifier
    Amplifies differential voltage signals with high precision and common-mode rejection
    Material: Integrated Circuit
  • Voltage Regulator
    Provides stable excitation voltage to load cell
    Material: Electronic Component
  • Filter Circuit Part
    Removes electrical noise and interference from signal
    Material: Capacitors and Resistors
  • ADC Converter
    Converts analog signals to digital format (if digital output)
    Material: Integrated Circuit
  • Terminal Block
    Connection interface for load cell and output cables
    Material: Plastic/Steel

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: Not applicable (electronic device)
other spec: Input signal range: 0-30 mV/V typical, Output types: 0-10V, 4-20mA, ±10V
temperature: -40°C to +85°C operating range
Media Compatibility
✓ Industrial automation systems ✓ Process control instrumentation ✓ Laboratory measurement equipment
Unsuitable: High-voltage environments (>600V) or explosive atmospheres without proper protection
Sizing Data Required
  • Input signal range (mV/V)
  • Required output type (voltage/current)
  • Power supply requirements (VDC)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Signal Drift/Inaccuracy
Cause: Component aging (e.g., resistor/capacitor degradation), thermal stress from ambient temperature fluctuations, or contamination affecting sensor input.
Complete Signal Loss/Output Failure
Cause: Power supply issues (voltage spikes, surges, or poor grounding), connector/cable damage (corrosion, physical breakage), or internal circuit board failure (solder joint fatigue, moisture ingress).
Maintenance Indicators
  • Erratic or unstable output readings on connected displays/controllers
  • Audible buzzing/humming from the unit or visible signs of overheating (discoloration, burning smell)
Engineering Tips
  • Implement regular calibration checks against a known reference to detect and correct drift early, following manufacturer intervals or based on criticality.
  • Ensure proper environmental protection (e.g., enclosures for harsh conditions), maintain stable power with surge protection, and secure connections to prevent vibration-induced damage.

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
IEC 61010-1:2010 Safety Requirements for Electrical Equipment CE Marking (EU Directive 2014/35/EU)

Quoted from the published standard.

Manufacturing Precision
  • Output Accuracy: +/-0.1% of full scale
  • Temperature Stability: +/-0.01%/°C
Quality Inspection
  • Electrical Safety Test (Dielectric Strength, Insulation Resistance)
  • Calibration Verification against NIST-traceable Standards

Manufacturers of Signal Conditioner

2 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.

Shanghai Chenzhu Instrument CO., LTD.
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Shenzhen Brightwin Technology Co., Ltd.
Shenzhen, Guangdong, 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
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

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Frequently Asked Questions

What is the typical input signal range for this signal conditioner?

The typical input signal range is 0–20 mV/V, which is suitable for load cells with sensitivity within this range. Always verify the exact range with the manufacturer for your specific load cell.

What output signals does it provide?

It provides standardized output signals such as 4–20 mA analog output, which is common for PLCs. Other options may include 0–10 V or digital protocols like RS-485, depending on the model.

What is the accuracy of this device?

The accuracy is ±0.05% of full scale, including linearity, hysteresis, and repeatability. This is a reference value; confirm the actual accuracy for the specific model.

What are the environmental ratings?

The operating and storage temperature range is -40 to 85 °C, with non-condensing storage. Ingress protection is IP54–IP65 per IEC 60529, making it dust-tight and water-resistant. Verify these ratings with the supplier.

Data Basis

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

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.
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