1, the electromagnetic flowmeter
should be installed on the full of measured medium pipeline.
2, general situation of measurement, the upstream straight pipe length should not be less than 3 d, downstream straight pipe length is not less than 2 d;
Requires precise measurement occasions, straight pipe length should not be less than 10 d, upstream downstream straight pipe length not less than 3 d.
3, plug-in electromagnetic flowmeter in horizontal and inclined pipe installation, the probe should be installed in the pipeline axis plane and 45 & deg;
Range, as shown in figure 3.
Figure 3 the installation of the electromagnetic flowmeter sensor in horizontal pipe runs 4, plug-in electromagnetic flowmeter probe center line should be perpendicular to the center line of the pipeline.
5, when the current is not grounded, electromagnetic flowmeter should be from the process piping insulation, its power and output signal isolation transformer should be adopted, as shown in figure 4.
The electrical connection in the figure 4 is not grounded fluid when be grounding current, electromagnetic flowmeter table body and process piping should be well connected and grounding, as shown in figure 5.
The electrical connection in the figure 5 ground fluid
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