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Home » Standard Calibration Weights » Standard Calibration Weights » Standard Calibration Weights (E1 Class)


Standard Calibration Weights (E1 Class)

Standard Calibration Weights E1 Class

Weights intended to ensure the traceability between the national mass standards (with values derived from the International Prototype of the kilogram) and weights of class E2 and lower. They are also used with mico-balances. Class E1 weights or weight sets shaIl be accompanied by a calibration certificate.
Description
  • Conformity : OIML R111-1 : 2004 Recommendation
    The OIML recommendation R111-1 : 2004 for weights relates to sizes 1mg-500mg & 1g-20kg, Statements are made on the accuracy, materials, geometric shape, making and storage of the weights.

  • Stainless Steel Specification

    Density
  • 8500 ± 100kg/m³ (Wire Wts.)
  • 8000 ±60 kg/m³ (Round Wts.)
  • Roughness: μm < 0.5 - μm < 0.1

  • Magnetic Susceptibility
  • m < 1g, ±<0.25
  • 2g < m < 10g, ±<0.06 (Round Wts.)
  • m > 20g, ±<0.02 (Round Wts.)

  • Permanent magnetisation: < 2.5µT


Technical Specifications

Nominal Value Reference A B C MPE ± δm in mg
1mg 0010319 4.56.50.13
2mg 0020319 4.26.30.133
2mg* 0020319 4.26.30.133
5mg 0030319 3.85.50.23
10mg 0040319 5.27.80.33
20mg 0050319 4.66.70.43
20mg* 0050319 4.66.70.43
50mg 0060319 3.95.40.64
100mg 0070319 7.49.70.85
200mg 0080319 89.81.06
200*mg 0080319 89.81.06
500mg 0090319 8.310.51.358

Technical Specifications

Nominal Value Reference ØA B C MPE ± δm in mg
1g 101-4319 6.06.02.80.010
2g 102-4319 6.010.42.80.012
5g* 103-4319 8.014.453.90.016
10g 104-4319 10.018.04.60.020
20g 105-4319 13.021.65.60.025
50g 106-4319 18.028.68.00.030
100g 107-4319 22.038.011.00.05
200g 108-4319 28.046.812.50.10
500g 109-4319 38.063.517.00.25
1kg 201-4319 38.063.517.00.25
2kg 202-4319 60.0101.528.01.0
5kg 203-4319 80.0142.437.02.5
10kg 204-4319 100.0181.647.05.0
20kg 205-4319 140.0192.264.010





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