Omega Engineering FMG90 manual

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Table of contents for the manual

  • Page 1

    omega.com e-mail: info@omega.com For latest product manuals: omegamanual.info FMG90 Series Electromagnetic Flow Meter Shop online at U ser ’ s Guide[...]

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    Table of contents page 1 About this oper ating m anual.................................................................................... 4 2 Device descr iption ................................................................................................... 5 2.1 Intended us e ...................................................................[...]

  • Page 4

    1 About this operating manual • The operating manual is aimed at specialists and semi-skilled personnel. • Before each step, read through the relevant adv ice carefully and keep to the specified order. • Thoroughly read and understand the information in the section (Safety Instructions " 3 " ). If you have any problems or questions,[...]

  • Page 5

    2 Device description The FMG90 series from Omega, is a non-c ontact flow sensor. The measurement is performed using magnetic induction and works without any moving parts. The FMG90 is used for measuring or metering water and aqueous solutions. The compact design and independence from the intake and disc harge sections allows the FMG90 to be used un[...]

  • Page 6

    2.1 Intended use The magnetic inductive flow sensor FMG90 mu st only be used for measuring and metering liquids with a minimum conductivity of 20 μ S/cm. WARNING! No safety component! The magnetic inductive flow sensor of the series FMG90 are not safety components in accordance with Directive 2006-42-EC (Machine Directive). ª Never use the FMG90 [...]

  • Page 7

    3 Safety instructions Before you install the FMG90, read through this operating manual carefully. If the instructions contained within it are not follow ed, in particular the safety guidelines, this could result in danger for people, the envir onment, and the device and the system it is connected to. The FMG90 correspond to the state-of-the-art te [...]

  • Page 8

    4 Construction and function Construction: The measuring tube with its ear thing sleeves and electrodes passes through the sensor housing and forms the external process connection of the FMG90. A magnetic field for the measur ement process is generated inside the sensor housing, which also contains the sensor and signal conditioning circuitry. The t[...]

  • Page 9

    5.1 Installation instructions CAUTION! Risk of malfunction due to external magnetic fields! Magnetic fields close to the device can cause malfunctions and should be avoided. ª Ensure that no external magnet ic fields are present at the installation site of the FMG90. • The FMG90 can always be installed anywhere along the pipeline. Straight secti[...]

  • Page 10

    • If two or more FMG90 devices are used side by side, maintain a separation of at least 2.5 cm between adjacent devices. If adjacent devices are too cl ose together, operation of both devices may be impaired due to mutual interference. 5.2 Assembly The FMG90 is installed directly into the pipe line. The compact design and light weight of the unit[...]

  • Page 11

    6 Electrical connection The electrical connection of the FMG90 is via the 4-pin plug M12x1 at the top. The corresponding connection cables with moulded coupling socket are available in various lengths. CAUTION! Electric current! The electrical connection should only be carried out by a fully qualified electrician. ª De-energize the electrical syst[...]

  • Page 12

    7 Commissioning and measuring operation Before switching on the FMG90 for the first time , please follow the instructions in the following section. 7.1 Commissioning Check that  the FMG90 has been installed correctly and that all screw connections are sealed.  the electrical wiring has been connected properly.  the measuring system is vent[...]

  • Page 13

    9 Disassembly and disposal CAUTION! Risk of injury! Never remove the device from a plant in operation. ª Make sure that the plant is shut down professionally. Before disassembly: Prior to disassembly, ensure that  the equipment is switched off and is in a safe and de-energised state.  the equipment is depressurised and has cooled down. Disas[...]

  • Page 14

    10 Technical data The technical data of customised versions may differ from the data in these instructions. Please observe the information specified on the type plate. Type FMG 91 FMG 92 FMG 93 FMG 94 FMG 95 FMG 96 Measurement device characteristics Flow range [GPM] 0.066…1.3 0.26…5.3 0.66…13. 2 1.3…26.4 2.6…53 3.3…66 Accuracy 1% of rea[...]

  • Page 15

    10.1 Materials table Component Material Component- w etted Sensor housing ABS Measuring tube PVDF X Process connections PVDF X O-ring EPDM X Electrodes Stainless steel 316L X Grounding rings Stainless steel 316L X 10.2 Pressure drop FMG 91 / FMG 92 FMG 91 / FMG 92 FMG 93 FMG 93 FMG 94 / FMG 95 FMG 94 / FMG 95 FMG 96 FMG 96[...]

  • Page 16

    10.3 Dimensions FMG 91 - 95 Ty pe L1 L2 D1 D2 FMG 91 4± 0.02 0.83 ± 0.01 ½ - 14 NPT Ø 0.31 FMG 92 4± 0.02 0.83 ± 0.01 ½ - 14 NPT Ø 0.31 FMG 93 4.02± 0. 02 0.83± 0.01 ¾ - 14 NPT Ø 0.55 FMG 94 4.41± 0. 02 0.98± 0.01 1 – 11.5 NPT Ø 0.71 FMG 95 4.41± 0. 02 0.98± 0.01 1 – 11.5 NPT Ø 0.71 FMG 96[...]

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    M-5204/1112[...]