R111 — OIML R111 (Weights of Accuracy Classes E1, E2, F1, F2, M1, M2, M3) Certificate Schema

{
  "certificate": {
    "number": "R111/2004-B-CN2-25.01",
    "scheme": "B",
    "page_total": 2,
    "member_state": "People's Republic of China",
    "date_issued": "2025-12-22",
    "oiml_issuer_id": "CN2"
  },
  "issuing_authority": {
    "name": "National Institute of Metrology, China",
    "address_lines": [
      "No.18, Bei San Huan Dong Lu, Chaoyang Dist., Beijing, P.R.China"
    ],
    "person_responsible": "Mr. Li Wentao",
    "person_title": "Director",
    "phone": "+861064525646",
    "email": "oimlia@nim.ac.cn",
    "website": "www.nim.ac.cn",
    "oiml_issuer_id": "CN2"
  },
  "applicants": [
    {
      "name": "Changzhou Fuyue Weight Co., Ltd",
      "address_lines": [
        "95# North Construct Road, Choumou, Bieqiao Town, Liyang City",
        "Jiangsu Province, P.R.China"
      ]
    }
  ],
  "manufacturers": [
    {
      "name": "Changzhou Fuyue Weight Co., Ltd",
      "address_lines": [
        "95# North Construct Road, Choumou, Bieqiao Town, Liyang City",
        "Jiangsu Province, P.R.China"
      ]
    }
  ],
  "certified_type": {
    "category": "Weights",
    "type_designations": [
      "E2"
    ],
    "module_designation": null,
    "description": "Weights of accuracy class E2, nominal mass range 1 mg to 20 kg"
  },
  "characteristics": {
    "type_level": {
      "accuracy_class": {
        "value": "E2"
      },
      "material": {
        "value": "Stainless steel (904L)"
      },
      "range_of_density": {
        "value": {
          "min": 7.93,
          "max": 8.1
        },
        "unit_symbol": "g/cm³",
        "unit_id": "u:kilogram_per_cubic_meter"
      },
      "susceptibility": {
        "value": 0.01,
        "unit_symbol": "cm³/g",
        "unit_id": "u:cubic_centimeter_per_gram"
      },
      "mass_range": {
        "value": {
          "min": 0.000001,
          "max": 20
        },
        "unit_symbol": "kg",
        "unit_id": "u:kilogram"
      }
    },
    "model_level": [],
    "config_level": []
  },
  "recommendation": {
    "id": "R111",
    "edition": 2004,
    "scheme": "B",
    "accuracy_classes": [
      "E2"
    ]
  },
  "test_reports": [
    {
      "id": "TER-R111/2004-CN2-25.01",
      "date": "2025-12-19",
      "pages": 12,
      "role": "type_evaluation_report"
    },
    {
      "id": "LSmm2025-04490",
      "date": "2025-11-26",
      "pages": 35,
      "role": "test_report"
    }
  ],
  "revision_history": [
    {
      "revision": "0",
      "date": "2025-12-22",
      "changes": "Initial issue"
    }
  ]
}