INDUSTRY COMPONENT

Scale/Ruler

Precision linear or rotary scale used with encoders/sensors for accurate position measurement in industrial automation.

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
ParameterTypical rangeNotes & selection driver
Length100-3000 mm
Accuracy±1-5 μm/m
Resolution0.1-10 μm
Signal OutputTTL, HTL, SSI, EnDat
Protection RatingIP67
Operating Temperature-10°C to +80°C

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

Standards
ISO 230-2, DIN 8602, IEC 61131

Parent Products

This component is used in the following industrial products

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

Typical Suppliers & Equivalents

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

A practical evidence checklist for RFQ preparation and supplier evaluation.

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.

Manufacturers of Scale/Ruler

Manufacturer profiles associated with Scale/Ruler.

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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.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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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