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Scale/Ruler Component – Machinery and Equipment Manufacturing

Q: What is the difference between optical and magnetic encoder scales?

Optical scales use glass or metal with fine gratings for highest resolution (down to 0.1μm), while magnetic scales use magnetized patterns on steel strips, offering better durability in harsh environments with slightly lower resolution.

Q: How do I maintain encoder scale accuracy?

Keep scales clean from contaminants, avoid mechanical impacts, maintain stable temperature (±2°C), and perform regular calibration against reference standards. Use protective covers in dirty environments.

Component Specifications

Definition

A calibrated scale or ruler integrated with optical, magnetic, or capacitive encoders/sensors to provide high-resolution position feedback. It serves as the reference standard for linear or angular displacement measurement in automated systems, converting physical movement into electrical signals for control systems.

Working Principle

Works by providing a calibrated reference surface with precise markings (optical patterns, magnetic poles, or capacitive grids) that are detected by a reading head. The encoder/sensor reads these markings as the scale moves relative to the sensor, generating digital or analog signals proportional to displacement.

Materials

Stainless steel (AISI 304/316), aluminum alloy (6061-T6), glass with chromium coating, or ceramic with laser-etched patterns. Thermal expansion coefficient: <10 ppm/°C.

Technical Parameters

Length 100-3000 mm
Accuracy ±1-5 μm/m
Resolution 0.1-10 μm
Signal Output TTL, HTL, SSI, EnDat
Protection Rating IP67
Operating Temperature -10°C to +80°C

Standards

ISO 230-2, DIN 8602, IEC 61131

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Scale/Ruler.

Parent Products

This component is used in the following industrial products

Encoder/Sensor

A device that detects and converts the position or motion of the Z-axis actuator into an electrical signal for feedback and control.

View Product Details

Position Sensor/Encoder

A device that detects and converts linear position into an electrical signal for measurement and control.

View Product Details

Engineering Analysis

Risks & Mitigation

Contamination affecting signal quality
Thermal expansion causing measurement drift
Mechanical damage to fine markings
Electromagnetic interference in signal transmission

FMEA Triads

Trigger: Contamination buildup on scale surface
Failure: Signal dropout or measurement errors
Mitigation: Install protective covers and implement regular cleaning protocols

Trigger: Thermal expansion mismatch between scale and machine base
Failure: Position drift over temperature changes
Mitigation: Use materials with matched thermal coefficients and implement temperature compensation algorithms

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±1 μm per meter for Grade A scales, ±3 μm/m for Grade B

Test Method

Laser interferometer verification per ISO 230-2, thermal cycling tests, vibration resistance testing

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between optical and magnetic encoder scales?

Optical scales use glass or metal with fine gratings for highest resolution (down to 0.1μm), while magnetic scales use magnetized patterns on steel strips, offering better durability in harsh environments with slightly lower resolution.

How do I maintain encoder scale accuracy?

Keep scales clean from contaminants, avoid mechanical impacts, maintain stable temperature (±2°C), and perform regular calibration against reference standards. Use protective covers in dirty environments.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

Scale/Ruler