LPG: Copper Corrosion by LPG • Density of LPG and of Light Hydrocarbons • Gage Vapour Pressure of LPG • Hydrogen Sulfide in LPG • LPG Relative Purity • Sampling and Gauging

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Density of LPG
and of Light Hydrocarbons

ASTM D1657
IP 235
ISO 3993

ASTM D1657 - Density or Relative Density of Light Hydrocarbons
by Pressure Hydrometer.
This test method covers the determination of the density or relative density of light hydrocarbons including liquefied petroleum gases (LPG) having Reid vapour pressures exceeding 101.325 kPa (14.696 psi).

IP 235 - ISO 3993 - Density or Relative Density of LPG and of Light Hydrocarbons by Pressure Hydrometer.
The prescribed apparatus shall not be used for materials having gauge vapour pressures higher than 1,4 MPa (absolute vapour pressure 1,5 MPa) at the test temperature.

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LT/HA-175000/M
Hydrometer Apparatus ASTM D1657

• Table support made in aluminium, instrument lower and upper chamber connection made in brass with Ni-Cr treatment.
• Tubular chamber made in acrylic resins diameter 50 mm × 36 mm, length 440 mm, equipped with safety mesh.
• Neoprene gaskets with small holes for gas passing.
• Three ¼” needle valves with Cv 0.37 orifice, MNPT connection.
• Double scale pressure gauger 0-2500 kPa, 0-350 Psi, stainless steel case.
• Thermo-hydrometer ASTM 310H, range 0.500-0.650 , thermometer range -10°…+35°C.
• Tested at 15 bar hydraulic pressure.

Accessories

• 1228: Specific gravity hydrometer similar to ASTM, type 101H.
  • Density range 0,500-0,650.
  • Division 0,001 sp g.
  • Length 360 mm.
  • Reference temperature 60/60°F.
• 5268: Safety relief valve with pre-set 15 bar.
• T-AS12C: Thermometer ASTM 12C IP 64C, range -20°…+102°C, div. 0,2°C, propylene carbonate filled.
• LT/TB-177000/M: Thermostatic bath, floor model.
  • Floor stand instrument completely made in stainless-steel.
  • Internal stainless-steel bath with capacity of 90 liters, equipped with double-insulation and fully immersion stainless-steel heater.
  • Temperature controlled by a digital thermoregulator with PID functions that control the temperature trough an A class PT100 sensor in the range from ambient to +90°C, resolution 0,1°C and stability ±0.1°C (with cover).
  • Motorized stirrer grant uniformity and stability.
  • Manually settable overtemperature cut-off alarm.
  • Stainless-steel cover with thermoplastic insulated handle.
  • Support which allows the immersion of 3 vapour pressure cylinders.
  • Dimensions: w 50.5 × d 50.0 × h 105.0 cm.
  • Internal dimensions: w 40.0 × d 35.0 × h 61.0 cm.
  • Power supply: 220 Vac or 115 Vac 50/60 Hz.
  • Max. consumption: 2000 Watt.
• LT/TB-176000/M: Thermostatic bath, table top.
  • Bench top instrument completely made in stainless-steel.
  • Internal stainless-steel bath with capacity of 45 liters, equipped with double-insulation and fully immersion stainless-steel heater.
  • Temperature controlled by a digital thermoregulator with PID functions that control the temperature trough an A class PT100 sensor in the range from ambient to +90°C, resolution 0,1°C and stability ±0.1°C (with cover).
  • Motorized stirrer grant uniformity and stability.
  • Manually settable overtemperature cut-off alarm.
  • Stainless-steel cover with thermoplastic insulated handle.
  • Support which allows the immersion of 2 vapour pressure cylinders.
  • Dimensions: w 37.0 × d 37.0 × h 72.0 cm.
  • Internal dimensions: w 21.0 × d 26.7 × h 53.0 cm.
  • Power supply: 220 Vac or 115 Vac 50/60 Hz.
  • Max. consumption: 2000 Watt.

Spare Parts

• 7022: Gasket, pack of 10 pcs.
• 5262: Polymethylmethacrylate tube.
• 5266: Thermo-hydrometer similar ASTM type 310H, density range 500-650, div. 1 kg/m³, length 390 mm, reference temperature 15°C, thermometer range 0°...+35°C, div. 0.5°C, filled without mercury.
• 2271: Pressure gauge, double scale 0-2500 kPa, 0-350 Psi, made in stainless steel, with ½” adapter.

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