Echantillonneur de gaz naturel
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Liquefied Natural Gas (NLG) ISOSAMPLE 8100 has been designed to sample Liquefied
Natural Gas or Refrigerated Light Hydrocarbon Fluid according to the
requirements of the most usual standard ISO 8943.
Natural Gas (NLG) ISOSAMPLE 8100 main features are the following:
insulation of the sample take-off probe by hight vacuum on tube and block
valve with extended bonnet vertically mounted.
vaporizer by coil exchanger imerged in oil bath temperature controlled Air
fin heater is provided downstream
piston holder cylinder capacity: 20 to 15O L - 3 level detectors at 0L
(empty) - low level tolerance- High level tolerance
sampling mode with microflow controller
gas: instrument air pressure controlled at 2.5 bg during the charge of
holder cylinder and at 4 bg during the discharge into the spot cylinder
barrier gas: Helium controlled at 100 mbg
transportation cylinders: number: 10 - size:1 000 to 4 000 cc; pressure
charge: 4 bg; fully automatic sampling by procedure as per the fill and
empty method Annex D of ISO 10 715
computer processing the application via the solenoid valve bus manifold
trough a profibus data-link
sequence and alarm history reported on screen with data acquisition by
with customer DCS via RS-485 data-link plus general alarm contact SPDT NC
proof computer enclosure and keyboard ATEX II 2G EExIIBT3; Solenoid valve
actuator ATEX II 2G EExII (i p) BT3
sample take-off probe and block valve are connected to the sample vaporizer by
vacuum tube for thermal insulation; these items are supplied as loosing parts
with the air fin heater for installation by others.
microflow controller /spot cylinders piston holder / Control unit SCAMEX are
enclosed in a rugged cabinet approximatively sized 500 (L) x 400 (D) x 2000 (H)
mm in epoxy painted carbon steel 20/10 mm sheet and IP 55 rating to accept
location in harsh environment.
compensate the Joule/Thomson effect, the microflow controller is electrically
heated and the cabinet is accurately temperature controlled at 40°C +/- 5°C to
front door features laminated safety windows for control unit display view.
spot transportation cylinders hook-up system is located in a separated cabinet
at the left side and temperature controlled between 40 and 50°C.