1. Introduction


To give the best performance, KROHNE flowmeters must be installed in a correct way. Important instructions should be taken into consideration, like the inlet and outlet length, pipe to be completely filled, direction of the flow, etc. Depending on the measuring principle of each device, the guidelines will differ. In this article we will explain the installation instructions for electromagnetic flow meters.


The article cover the following topics:


  • Recommended installation positions for electromagnetic flow meters.
  • Installation guidelines for the WATERFLUX (special electromagnetic flow meter).


 

2. Recommended installation positions

  1. An inlet section of at least 5 DN and outlet of at least 3DN is required.
  2. In case of T inlet in front of the device the distance will be doubled to 10 DN.
  3. Control valves must always be installed behind an electromagnetic flowmeter to prevent the sensor to run empty. NcaigIC9uAoGniHAid-kq2RYKRAW3_8MQg.png
  4. With electromagnetic flowmeters, it is important that the measuring tube is always completely full. For this reason, the measuring device should never be installed in an upper pipe elbow or a descending pipe line but preferably in front of risers or bent pipelines and elbows. This guarantees a completely full pipeline.
  5. Do not install electromagnetic flowmeters directly in front of a free outlet as this does not assure that the pipe will be filled across the entire pipe cross-section. 
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  6. External influences such as magnetic sources and vibrations should always be avoided.

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Note

The inlet and outlet sections are measured from the middle of the measuring device, unlike measuring devices with other measuring principles which are measured from the flange.

3. WATERFLUX 3000
The waterflux is a special electromagnetic flowmeter for drinking water that can be installed without inlet and outlet sections.
  • For diameter (25:300) no inlet or outlet required (also the accuracy may decrease depending on the flow rate).



  •  In case of T section before the sensor. 


Note

The WATERFLUX doesn’t need inlet and outlet run but the sensor still need to be full; draining or partial filling of the flow sensor must be avoided.

  • Always mount the sensor vertically and not horizontally.