Related Manuals for Tecfluid FLOMAT FX FlomatFX
Summary of Contents for Tecfluid FLOMAT FX FlomatFX
- Page 1 Electromagnetic insertion sensor Series instrumentation FLOMAT FX for fluids Instructions Manual R-MI-FlomatFX Rev.: 1 English version...
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Page 2: Table Of Contents
TABLE OF CONTENTS WORKING PRINCIPLE …………………........... RECEPTION .................... Unpacking …................Storage temperature ..............Handling ..................INSTALLATION ..................Sensor position ................Straight pipe sections ............... Mixtures ..................Valves ..................Pumps ..................Vibrations ................... Magnetic fields ................Temperature ................MOUNTING THE INSERTION FITTING ..........MOUNTING THE SENSOR .............. -
Page 3: Working Principle
WORKING PRINCIPLE The Flomat electromagnetic insertion flowmeters are based on Faraday’s induction law. When an electrically conductive liquid flows through a magnetic field, perpendicular to the flow direction, it induces a voltage E, proportional to the liquid velocity. Two electrodes in contact with the liquid and positioned perpendicular to the magnetic field, capture this voltage E. -
Page 4: Sensor Position
Sensor position The most adequate position is in the side of the pipe. In this way, deposits of particles on the electrodes and air pockets at the top of the pipe are avoided. 60º 60º Straight pipe sections The point where the Flomat will be installed must be a straight pipe section, separated from elements that can disturb the flow profile, such as elbows, diameter changes, etc. -
Page 5: Mixtures
Mixtures If liquids of different conductivities are mixed it is necessary to install the sensor a minimum of 50 x DN from the point of mixture in order to obtain a uniform conductivity of the liquid and stabilize the readings. If this distance is less, the readings may be unstable. -
Page 6: Vibrations
Vibrations Vibrations of the pipes should be avoided by anchoring the pipe before and after the sensor. The vibration level should be less than 2.2 G in the range of 20 -150 Hz according to IEC 068-2-34. Magnetic fields Strong magnetic fields close to the sensor should be avoided. Temperature In open air installations it is recommended to install a protection to avoid direct sun light on the flowmeter. -
Page 7: Mounting The Insertion Fitting
MOUNTING THE INSERTION FITTING The sensor is normally supplied mounted in its insertion fitting. Before welding the fitting to the pipe , the sensor must be removed to avoid irreparable damage due to excessive temperatures. There are two basic types of insertion fitting: threaded fitting and flange fitting. For the smaller pipe diameters (DN40, 50 &... - Page 8 Threaded fitting Sensor Fitting Qnom length length 88-s 90,5 12,5 85,5-s 141,3 15,5 82,5-s 220,9 79-s 318,1 73-s 565,5 67-s 883,6 37,5 60,5-s 1.272.,3 54-s 1.731,8 48-s 2.261,9 62,5 140,5-s 3.534,3 Flange fitting 128-s 5.089,4 87,5 115,5-s 6.927,2 103-s 9.047,8 112,5 90,5-s 11.451,1...
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Page 9: Mounting The Sensor
Drill a 48.5 mm diameter hole in the pipe to insert the fitting and weld the fitting to the pipe. The axis of the insertion fitting should be perfectly perpendicular to the pipe axis. If the pipe is made of concrete or other material to which the insertion fitting cannot be welded, a collar fitting or saddle fitting should be used. -
Page 10: Possible Problems When Commissioning
POSSIBLE PROBLEMS WHEN COMMISSIONING No flow rate indication Check that the cables for remote electronic units have been correctly connected. Inverted coil cables or electrode cables will have the same effect as inverting flow direction. Check that the electrodes are perpendicular to the flow direction. If the sensor is mounted with the electrodes aligned with the flow direction the output signal will be very poor and the flow rate reading could be zero. -
Page 11: Maintenance
MAINTENANCE It is recommended to clean the electrodes in installations where appreciable incrustations or sedimentations can occur. Dirty electrodes can cause unstable readings and in extreme cases indication of empty pipe detection Cleaning can be done using liquid detergents and medium hard brushes. The Flomat-Tap System allows maintenance of Flomat sensors without having to stop flow of the liquid in the pipe. - Page 12 WARRANTY TECFLUID guarantees all the products for a period of 24 months from their sale, against all faulty materials, manufacturing or performance. This warranty does not cover failures which might be imputed to misuse, use in an application different to that specified in the order, the result of service or modification carried out by personnel not authorized by Tecfluid, wrong handling or accident.