{
  "schema": "piping-level-mounting/v1",
  "scope": "physical mounting only",
  "bridle_basis": "selected horizontal vessel diameter >6ft",
  "bottom_extension": "only when range must reach vessel bottom",
  "valves": "omitted for figure clarity; dedicated block/vent/drain arrangement required",
  "sharing": "no fill/drain/pumpout common connection",
  "LC": "external displacer chamber",
  "LG": "visible level gauge",
  "A": "selected drawing elevation difference between LC/LG connection datums",
  "class_scope": [
    150,
    300,
    600
  ],
  "rows": [
    {
      "chamber_centres_mm": 356,
      "gauge_count": "1 two-element",
      "visible_length_mm": 670,
      "standpipe": false,
      "A_min_mm": 90,
      "A_max_mm": 394
    },
    {
      "chamber_centres_mm": 813,
      "gauge_count": "1 three-element",
      "visible_length_mm": 1036,
      "standpipe": false,
      "A_min_mm": 102,
      "A_max_mm": 315
    },
    {
      "chamber_centres_mm": 2134,
      "gauge_count": "2 two-element + 1 three-element",
      "visible_length_mm": 2326,
      "standpipe": true,
      "A_min_mm": 102,
      "A_max_mm": 284
    }
  ],
  "A_assumption": "longest individual visible gauge placed at top when multiple gauges",
  "not_established": [
    "DP calibration",
    "control architecture",
    "another product dimensional eligibility"
  ]
}