Azbil MagneW Plus+ NNK140/941, User Manual

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Azbil Corporation
24
MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector
6 : Inspection
Inspect the following parts.
6-1 : Flowmeter in general
(a) Check to see if the detector and the converter are mounted as specified.
…. See “Considerations on installation” on page 17. “Examples of
installation” on page 20 and “Considerations on wiring” on page 22.
“Wiring” on page 22 in this manual.
(b) Check to see if the detector and the converter are connected correctly.
…. See “Considerations on wiring” on page 22. in this manual.
6-2 : Detector
(a) Are all the bolts tightened?
…. Make sure that all the bolts are tightened.
(b) Is the detector grounded?
…. Refer to the instructions related to the ground terminal in “Grounding
terminal” on page 17.
(c) Are the dummy detector and the detector installed at the same height?
…. If detectors with elbow flanges are used, stop the flow and fill the elbow
flanges with liquid and make sure that no fluid comes out from either of the
detectors. If they are not installed at the same height, adjust it using the
water level adjusting arm. (See “Figure 14 Water level adjustment”.)
(d) Is the detector or the dummy detector size large enough for the maximum
flow rate?
… See “Detector size selection graph” on page 2 for checking this.
(e) Are oily suspended substances stuck to the inner wall?
…. Wipe with a cloth
Water level
error*
Elbow flange
When the two are not the same height.
(Fluid overflows from one.)
When the two are the same height.
* Correct the error using the water level adjusting arm by referring to 3-(4)
“Instructions relating to the Elbow Flange”.
Figure 14 Water level adjustment