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Summary of Contents for FAURE HERMAN HELIFLU TGN
- Page 1 HELIFLU User’s Manual...
- Page 2 HELIFLU TGN — User’s Manual CONTENTS Chapter 1: Generalities .................................... 3 Generating the signal ............................................ 4 Chapter 2: Components of the meter ..............................5 Body ................................................... 5 Measurement sub assembly........................................6 Detection sub-assembly ..........................................7 Flow Conditioner ..............................................7 Totalizer (option) ............................................... 7 Pressure tap (option from 3 to 10”) .......................................
- Page 3 User’s Manual Chapter 1: Generalities HELIFLU TGN turbine flowmeters are designed for precise and reliable volume measurement of fluids in gaseous phase. Their simple and rugged construction guarantees excellent measurement accuracy and repeatability for a wide range of industrial and commercial applications. These meters incorporate a freely rotating rotor on ball bearings, positioned at the center of the measuring section.
- Page 4 HELIFLU TGN — User’s Manual Generating the signal The operating principle of these meters is based on measuring the velocity of rotation (instantaneous flow) and the number of revolutions (quantity) of a helical-bladed rotor located at the center of the pipe, by means of a magnet (embedded in the thickness of the blades) / solenoid assembly (positioned in the body).
- Page 5 HELIFLU TGN — User’s Manual Chapter 2: Components of the meter HELIFLU TGN turbine meters include the following sub-assemblies: Body • Measurement sub assembly (with rotor) • Inlet ring • Detection sub assembly • Flow conditioner (depending on meter size) •...
- Page 6 HELIFLU TGN — User’s Manual Measurement sub assembly This sub-assembly contains the elements contributing to the free rotation of the rotor. For TGN 25 to 250, a nozzle is integrated into the measuring body to reduce the flow cross-section, accelerating fluid velocity and thus reducing boundary layer thickness. The nozzle is made of stainless steel or aluminum alloy for small diameters (25 to 50) [Figure 4], and PETP for larger sizes (80 to 250) [Figure 5].
- Page 7 User’s Manual Detection sub-assembly The standard version of HELIFLU TGN turbine meters includes a detection sub-assembly for generating a pulse train representative of the volume measured (and flow rate). A preamplifier must be integrated into the sub-assembly, at least when the distance between the meter and the acquisition system exceeds 200 m.
- Page 8 Storage temperature should be between -20 and +70°C (-4 to 158°F) If the equipment is not introduced into service within one month of receipt, FAURE HERMAN recommends keeping it under inert gas (nitrogen). Before installing the equipment on the measuring line, carry out a thorough visual inspection to identify flow direction, serial number, operating range, clamping class, etc.
- Page 9 User’s Manual Chapter 4: Installation HELIFLU TGN turbine meters can be installed either horizontally or vertically (upflow), respecting the direction of flow indicated on the nameplate. For applications subject to legal metrology control, and more generally to obtain reliable measurements, the equipment must be inserted between two straight sections of piping with the same nominal diameter as the equipment and a length greater than or equal to 15 x DN upstream and 5 x DN downstream.
- Page 10 Never re-use used gaskets. Bolts and nuts Mechanical connections of HELIFLU TGN meter to site piping are selected in accordance with the following standards ASTM A 193 B7 (threaded rods) and ASTM A 194 2H (nuts) in accordance with ASME B16.5 for applications at temperatures between -45°C and +480°C (-49 /+896 °F).
- Page 11 "pockets" between two gas sections can result in the destruction of the rotor pivoting system, leading to serious measurement errors. FAURE HERMAN recommends ensuring that there is no risk of liquid injection/generation upstream of the meter and, if necessary, installing a dehumidification system upstream of the meter. For an elevated installation, it is strongly recommended not to position the meter in a low area where a liquid pocket could form under the effect of gravity and/or significant cooling, causing a phase change.
- Page 12 HELIFLU TGN — User’s Manual 2 wires Preamp 3 wires Preamp (Standard FH / NAMUR) (Open Collector) If necessary, ground the shielding braid using the screw provided. 2. Refit cover, tighten to 6 Nm (4.4 ft-lb). Wiring diagrams On-site electrical connection depends on : Type of protection (intrinsically safe, explosion-proof) •...
- Page 13 HELIFLU TGN — User’s Manual Power Supply Ω ± 5% 24 VDC FH71 - 3 wires 250 mW blue MTL5532 white 0 < SDT < 12V Shielded Cable AWG 16 - L < 500 m (1,500 ft) (SDT: Tension Threshold detection) (0V) Figure 12.
- Page 14 Avoid prolonged use of the meter beyond the maximum flow rate (see nameplate). Chapter 6: Maintenance HELIFLU TGN turbine meters require no special maintenance as long as their use remains within the operating limits of the type. A periodic inspection of the meter is recommended every 4000 hours of operation (or every 6 months).
- Page 15 HELIFLU TGN — User’s Manual Chapter 7: Malfunctions ISSUE PROBABLE CAUSE The meter overestimates 1 – 2 – 5 - 7 – 8 – 9 – 10 – 11 The meter underestimates 1 – 2 – 3 - 4 – 5 – 6 – 8 – 9 – 10 – 11 Unstable indications 1 –...
- Page 16 HELIFLU TGN — User’s Manual Chapter 8: Repairs Replacing the preamplifier This operation must be carried out outside the dangerous area and with disconnected power supply. Refer to the Magnetic Sensors Technical Manual (TEC 17-12-07) if necessary. Cut sealing wire (if applicable). •...
- Page 17 HELIFLU TGN — User’s Manual Replacing the Solenoid With locking ring This operation can only be performed once the preamplifier or terminal block has been removed. Disconnect the connection cable between solenoid and preamplifier (or terminal block). • Remove the solenoid by loosening the ring using the tool provided (ref. 870046) •...
- Page 18 Figure 18. Disassembly/assembly of the solenoid held in place by a screwed ring Replacing the measuring subassembly It is not possible to replace ball bearings on site, and FAURE HERMAN recommends returning the measuring subassembly or the complete meter (calibration) to the factory if necessary.
- Page 19 HELIFLU TGN — User’s Manual Chapter 9: Removing the meter The equipment is designed to operate under pressure and must be depressurized before being removed from the measuring line (complete dismantling or work on an internal component). IMPORTANT: Make sure the line is completely depressurized before loosening the connecting bolts. Appendix 1 –...
- Page 20 Never use hammers or tools likely to generate sparks or damage the equipment's electrical protection (housing, cable glands, conduits, etc.). Installation, servicing and maintenance of the equipment must be carried out by qualified personnel. All spare parts must be approved by FAURE HERMAN. TEC 98.04.06 EN rev L...
- Page 21 Repairs and modifications to the equipment are only possible with the express agreement of FAURE HERMAN. The use of spare parts not recognized by FAURE HERMAN releases FAURE HERMAN from all liability for any consequences related to this original modification.
- Page 22 TGN — User’s Manual ATEX & IECEx HELIFLU TGN meter is ATEX certified and compliant with regard to the essential health and safety requirements relating to the design and construction of equipment intended for use in potentially explosive atmospheres (Directive 2014/34/EU).
- Page 23 HELIFLU TGN — User’s Manual General safety information The equipment must remain de-energized during installation and maintenance. For safe operation, the equipment must be used in accordance with the criteria defined by the ATEX certificate and nameplate. Please observe all instructions concerning the equipment and components contained in this manual.
- Page 24 HELIFLU TGN — User’s Manual ATEX - Electrical Part - Example of marking TEC 98.04.06 EN rev L...
- Page 25 HELIFLU TGN — User’s Manual Risk analysis (Directive 2014/68/EU) Appropriate resistance Provisions Temperature and pressure limits must be taken into account at the design stage. Excessive temperature and Limitations are indicated on the equipment nameplate. pressure. It is the user's responsibility to install suitable devices to limit pressure and temperature. Influence of wind/snow.
- Page 26 HELIFLU TGN — User’s Manual Recommandations ATEX Where applicable, this equipment is ATEX-certified and complies with the essential health and safety requirements for the design and construction of equipment intended for use in potentially explosive atmospheres (Directive 2014/34/EU). To ensure safe operation, please ensure that the equipment is used in accordance with the indications given on the ATEX certificate and identification plate, and comply with the operating, installation and maintenance manuals for the equipment and its sub-assemblies.
- Page 27 HELIFLU TGN — User’s Manual FAURE HERMAN FAURE HERMAN - USA 2, Lieu-Dit l’Archette 8280 Willow Place Dr. North 72400 La Ferté Bernard Suite 150 France Houston, TX 77070 (U.S.A) Tel : +33 (0)2 43 60 28 60 Tel : +1 713 623 0808 E-mail : sales@faureherman.com...
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