CALIBRATION WEIGHTS

100 kg | 200 kg | 500 kg | 1000 kg

DETAILED TECHNICAL SPECIFICATION

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1. General Description

Heavy-capacity calibration weights are used for testing, verification, and calibration of weighbridges, platform scales, tank weighing systems, crane scales, and industrial weighing systems. These weights are designed for rugged field use with safe handling and long-term stability.

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2. Standards & Compliance

• Applicable Standard: OIML R-111-1

• Accuracy Class:

  • M1 / M2 (commonly supplied for heavy weights)

• Legal Metrology:

  • Suitable for verification & stamping (India)

• Traceability:

  • Factory calibrated / NABL-traceable (as specified)

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3. Nominal Weights Covered

• 100 kg

• 200 kg

• 500 kg

• 1000 kg (1 Ton)

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4. Metrological Tolerances (Typical)

(As per OIML R-111)

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5. Material Specifications

• Material: High-grade Cast Iron / Mild Steel (as specified)

• Density: ~7200 kg/m³ (Cast Iron)

• Manufacturing Process:

  • Precision casting / fabrication with stress relief

• Corrosion Protection:

  • Anti-rust primer + industrial enamel paint

  • Optional galvanization / epoxy coating

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6. Construction Details

• Design Type:

  • Block / Stackable / Modular design

• Shape:

  • Rectangular / square block with flat contact surfaces

• Handling Features:

  • Lifting eye bolts / slots

  • Forklift pockets (for ≥500 kg)

• Markings:

  • Nominal weight value

  • Accuracy class

  • Manufacturer identification

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7. Dimensional & Mechanical Stability

• Thermal Expansion:
  ~10 × 10⁻⁶ /°C

• Dimensional Stability:
  Suitable for outdoor & industrial environments

• Long-Term Mass Stability:
  Within OIML limits under normal handling & storage

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8. Environmental Conditions

• Operating Temperature: –10 °C to +50 °C

• Relative Humidity: ≤ 90% RH (non-condensing)

• Usage:

  • Indoor & outdoor (protected from direct rain recommended)

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9. Handling & Safety

• Designed for safe mechanical handling

• Crane hook / forklift compatible

• Anti-slip flat base for stable placement

• Safety markings provided on request

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10. Calibration & Certification

• Calibration Method:

  • Comparison against higher-accuracy reference weights

• Certification Options:

  • Factory calibration certificate

  • NABL-traceable calibration certificate

  • Legal Metrology stamping (where applicable)

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11. Storage & Transportation

• Storage:

  • On pallets / flat floor with spacers

• Transportation:

  • Wooden pallet / steel frame

• Stacking:

  • Modular stackable design (optional)

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12. Applications

• Weighbridge calibration

• Platform & pitless scales

• Tank & silo weighing systems

• Crane & hopper scales

• Legal Metrology inspections

• Heavy industrial quality control

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13. Compliance Summary

✔ OIML R-111 compliant
✔ Legal Metrology suitable
✔ Rugged & field-ready design
✔ Available with NABL traceability