Installation Guidelines for a Flow Meter


Flow meters monitor the linear, non-linear, mass or volumetric flow rate of a liquid or gas. When selecting a flow meter, consider factors such as familiarity with plant personnel, experience with calibration and maintenance, availability of spare parts and the failure history of the flow meter. Pay close attention to each detail when installing your flow meter.

Things You'll Need

  • Pipe section adapter
  • Control unit adapter
  • Plastic hoses
  • Angle bracket

Flow Meter Installation

  • Assemble the flow meter in a vertical or horizontal position. If done horizontally, the control unit must be mounted upward. Place it on the top of the pipe section and not the underside. Positioning the flow meter horizontally prevents particles in a fluid from building up in the pressure sensor chambers.

  • Make sure that the assembly of the flow meter is correct. There is an engraved arrow on the device indicating the flow direction. The cable connector must be located on the upstream side. The installation location must be rigid and vibration free. If the location is unstable, place the flow meter onto a wall or an angle bracket with the two threaded M6 holes on the rear side of the pipe section.

  • Ensure that the pipe section matches with the pipe's inside diameter. If the fittings are too small, this will create a media jet stream. This will cause the differential pressure to get too low, thus leading to inaccurate measurement results.

  • Check the system pipe to ensure that there is a long straight run before the flow meter (upstream). The run must be at least 15 times the diameter of the present pipe.

Separate Mounting Installation

  • Set up the pipe section vertically or horizontally. Make sure the pressure channels are pointing upward, downward or to the side, as indicated.

  • Connect the pipe section adapter to the pipe section. Select a suitable place to assemble the control unit. This location should be easily accessible for maintenance.

  • Attach the control unit adapter to the control unit. Assemble the control unit adapter onto a wall, a pipe or a sturdy object.

  • Make sure the hoses are of the same length. This prevents uneven pressure distribution in the two channels.

  • Connect and tighten the positive and negative ends of both hoses to the positive and negative sections of the control unit adapter and the pipe section adapter respectively.

Tips & Warnings

  • Before installation commences, disconnect the electrical power.
  • Make sure the system is not pressurized.
  • Plastic hoses should not be used for temperatures over 90 degrees or pressures higher than 10 bar. If the temperature exceeds this amount, then copper or stainless steel tubing should be used.

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