The HELIFLU™ TZN Flowmeter is designed for high accuracy measurement of liquids : from very light LPG
products to heavy crude oil. The advanced design and robust construction together with a wide range of available options enable the HELIFLUTM TZN Flowmeter to be used in the most severe environmental
& process conditions.
Key Technological Features
• Wide measurement range up to 15:1 turndown ratio,
• Low pressure drop & back pressure,
• Innovative design of helical profile,
• Simple, robust construction,
• Titanium rotor,
• Excellent resistance to corrosion, high pressures & temperature changes,
• Insensitivity to density changes,
• Low sensitivity to viscosity changes,
• Optional designs for low temperature and high wax / contaminants applications
Key Customer Advantages
• Custody transfer accuracy,
• High stability & reliability,
• Low energy consumption,
• Wide range of viscosities,
• Linearity suitable for multi-product measurement,
• Low cost of ownership, Simplified maintenance,
• Long service life : up to 100,000h MTBF,
• Use for dirty crude oil applications,
• Use for master metering calibration.
High Accuracy Flowmeters
Environment
Ambient temperature range -50 to +80°C (-58 to +176°F)
Process temperature range -50 to +180°C (-58 to +356°F)
Storage temperature -50 to +60°C (-58 to +140°F)
Climatic protection IP 66
Safety
Ex ia version (with coil &/or preamp) Compatible with installation in Zones 1 & 2 Group II G
Ex d version (with coil &/or preamp) Compatible with installation in Zones 1 & 2 Group II G
Mechanical
Meter size 0.5 to 20”
Flange Rating ANSI 150/300/600/900/1500/2500
Meter body material Carbon steel, stainless steel (other upon request) Flange material Carbon steel, stainless steel
Rotor material Titanium or Aluminium
Bearings material Tungsten carbide or graphite
Options Body & flanges in low temperature carbon steel,
Duplex stainless steel
NORSOK compliant (on request)
Performances
Accuracy ± 0.15 %
Repeatability ± 0.02 %
Max. flow rate 0.6 to 6000 m3/h
Viscosity range 0.1 to 350 cSt (higher upon request)
Electrical options
Pick-up coil 1 or 2
Pick-up coil + preamp. Available
Pick-up coil + remote preamp. Available
Local converter Available
Pick-up-coil + preamp. + pulse multiplier Available
Approvals
Electrical ATEX (94/09/EC) compliant / IECEx (Ex d) certified
Pressure PED (97/23/EC) compliant
Environment EMC (2004/108/EC) compliant
Metrology OIML R117-1 / MID 2004/22/EC (class 0.3) and other national