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ROTARY GAS METERS

ROTARY GAS METERS. TYPICAL APPLICATIONS. PRESSURE. 100bar. Turbine. 16bar. TWIN Rotary / Turbine. 4bar. Rotary. 30 mbar. D. 40 m3/h. 400 m3/h. 1000 m3/h. 4000 m3/h. CAPACITY. RANGEABILITY. RANGEABILITY. TIME. LOAD PROFILE. CAPACITY. INDUSTRIAL. COOCKING. HEATING. BOILER.

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ROTARY GAS METERS

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  1. ROTARY GAS METERS

  2. TYPICAL APPLICATIONS PRESSURE 100bar Turbine 16bar TWIN Rotary / Turbine 4bar Rotary 30 mbar D 40 m3/h 400 m3/h 1000 m3/h 4000 m3/h CAPACITY

  3. RANGEABILITY RANGEABILITY TIME LOAD PROFILE CAPACITY INDUSTRIAL COOCKING HEATING BOILER

  4. RANGEABILITY OPTIMIZED ROTARY METER CONVENTIONAL ROTARY METER TURBINE METER TIME LOAD PROFILE CAPACITY INDUSTRIAL COOCKING HEATING BOILING

  5. OPERATING PRINCIPLE • DISPLACEMENT PRINCIPLE • DISPLACED VOLUME: TWO ROTATIONS

  6. OPERATING PRINCIPLE SEAL

  7. LEAKAGE LEAKAGE LEAKAGE ERROR OF INDICATION ERROR 1% NO LEAKAGE 0% CAPACITY -1% SMALL LAEKAGE LARGE LEAKAGE

  8. LEAKAGE IS RELATED TO IMPELLER DIMENSIONS AND TOLERANCES L S W H 3 (2L + 2H) x S LEAKAGE = W

  9. TURN DOWN RATIOS WITH NATURAL GAS LEAKAGE = FUNCTION OF VISCOSITY VISCOSITY AIR = VISCOSITY NATURAL GAS

  10. SEAL GAP: 0,15 mm (1 : 50) 0,12 mm (1 : 100) 0,10 mm (1 : 160)

  11. PULSATION 14% Actual flow Time

  12. PULSATION • - Reducer • Bend • Valve • Longitudual Wave: • Significant Error • High Noise Level • Bearing Damages

  13. PULSATION Error of Indication (%) • Error depends on: • Installation • Pressure • Meter Type/Brand 1 capacity -1

  14. TRANSPORTATION USE PROTECTION COVERS

  15. TRANSPORTATION (BEARING DAMAGES)

  16. INSTALLATION STRESS PARALEL AND ALIGNED • CONVENTIONAL METERS ARE • SENSITIVE TO INSTALLATION • STRESSES • INSTALLATION STRESS CAN • LOCK UP THE METER • NO SUCURITY OF SUPPLY

  17. HARD COATING WETTED PARTS WITHOUT HARD COATING THE METER PERFORMANCE WILL DEGRADE AND WILL FINALLY LOCK UP

  18. RIGID DESIGN • Non-rigid designs are sensitive to • fast starting up (common practice) • Meters will lock up • No security of supply

  19. STARTING UP 50 m PIPE LINE 4 bar FILLING THE PIPE LINE WILL OVERLOAD THE METER SHORTLY 500% ! ¼ x D

  20. INSTALLATION SEEVE PREFERED

  21. INSTALLATION SEEVE SEEVE

  22. INSTALLATION DIRTY GAS: CONE SIEVE (CAN HANDLE 5 TIME MORE DIRT)

  23. INSTALLATION NO LUBRICATED PLUG VALVES UP STREAM THE METER

  24. INSTALLATION OR USE CONE FILTERS (ROTARY AND TURBINE)

  25. INSTALLATION CLEAN THE INLET

  26. INSTALLATION No grease on Gaskets

  27. INSTALLATION 3 2 1 4 Cross wise

  28. INSTALLATION

  29. INSTALLATION Oil level

  30. INSTALLATION Oil level

  31. IMRM ROTARY METER G25 (11/2”) – G250 (4”)

  32. IMRM FEATURES Conform Latest and Future Directives (EEC, EN and OIML) Square Impeller Technology Turn Down Ratio > 1:160 (EN12480) Rigid Construction Not Sensitive to Installation Stresses Thermical Balanced 150% Overload permitted Front Reading/Servicing On-Site or Local Repair

  33. REGISTRATION FUNCTIONALITY SENSOR INDEX COMMUNICATION SEPERATION FUNCTIONS(CONFORM OIML)

  34. LARGE TURN DOWN RATIO IMRM Rotary Meter Conventional Rotary Meter Turbine Meter Time LOAD DURATION CURVE Load HEATING COOLING HEATING COOLING COOKING BOILER

  35. LEAKAGE LEAKAGE LEAKAGE LEAKAGE IS UNREGISTERED LOSS error 2% No leakage 0% capacity -2% Large leakage Small leakage

  36. SQUARE IMPELLERS L S W H 3 (2L + 2H) x S LEAKAGE = W

  37. iMRM Quadratic Impellers CONVENTIONAL SQUARE

  38. SQUARE CONVENTIONAL

  39. IMRM RANGEABILITY >1:160 ERROR (%) 1 CAPACITY >1:100 -1

  40. EXTREME RIGID CONSTRUCTION

  41. iMRM Rigid Construction

  42. STAINLESS STEEL BEARING SUPPORT Temperature Influence < 0.007% per degree C. >50% Overload Permitted Exchangeable Bearing Sizes (High Pressure Application, Specials) STAINLESS STEEL

  43. iMRM Stainless Steel Bearing Support

  44. RIGID METER BODY RIGID METER BODY means Less sensitive to Installation Stress

  45. iMRM RIGID METER BODY

  46. INSTALLATION - Suitable for Installation to the Wall - All Plugs in Front

  47. iMRM INSTALLATION

  48. IMRM: ON-SITE REPAIR BALL BEARINGS

  49. iMRM REPAIRABLE BEARINGS BALL BEARINGS

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