Azbil MagneW Plus+ NNK140/941, Руководство пользователя

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Azbil Corporation
MagneW PLUS+ Electromagnetic Flowmeter Open channel Flowmeter Detector
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4 : Installation
4-1 : Considerations on installation
Before the installation of a open channel type electromagnetic flowmeter, observe
the following considerations.
•
If you are asking a subcontractor to install a flowmeter, you are advised to check
the procedure of installation work in writing in advance.
• Protect the ends of the dedicated cables attached to the body from water by
wrapping them with tape.
• When locating a flowmeter on a gate, assign one worker to the upstream side
of the gate and another to the downstream side. Suspend the flowmeter with a
chain block and lock its body with bolts with the specified tightening torque. Make
sure that the electrode is situated horizontally.
• Ground the flowmeter with the grounding terminal. (The placement of the
grounding terminal is shown in Figure 11.)
• After mounting a detector, make sure that neither the body, nor the cables are
damaged.
• The gate board on which the elbow flange–type detector and dummy detectors
are installed must bear the weight of the detectors and of the water that flows
through them. Therefore, use a board that is strong enough and that will not
warp. If the gate board warps, leakage will occur between the board and the
detectors, and measurement will be incorrect.
• When removing and reinstalling the submersible electromagnetic flowmeter from
the gate board for replacement, recalibration, or other purposes, check that the
board is not deformed and that there is no rust or foreign matter on the sealant
between the board and the detector.
Grounding terminal
Figure 11 Grounding terminal