Azbil MagneW Two-wire PLUS+ MTG15A, Руководство пользователя

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4-2
4-1. Confirmation before start
Introduction
Before you start up the instrument, confirm the following items. Numbers in parentheses
indicate the chapter to which to refer.
(1) Confirm that the electromagnetic flowmeter is installed correctly in the pipes (Chapter 3.
Electrical wiring).
(2) Confirm that the electrical wiring is correct (Chapter 3. Electrical wiring).
(3) If communication is required, confirm that the communication equipment is wired
correctly (Volume on Communication).
(4) Fill the electromagnetic flowmeter's detector with a fluid and do zero adjustment in a
static state (Chapter 5. Operation using the data setting device).
(5) Confirm that there is no leakage at the joint of the electromagnetic flowmeter's detector
(Chapter 3. Electrical wiring).
(6) Confirm that the electromagnetic flowmeter's detector is filled with water and there are
no stagnant bubbles.
(7) Turn on power and warm up for 30 minutes.
(8) Confirm whether the settings of the data sheet inserted in the converter have been
attained. If there is need to change settings to meet your usage, change them using the
data setter or the like.
(9) For the accurate flow measurement, verify the zero point value in each excitation current
(Manual zero1, manual zero2, and manual zero3) by using manual zero function, if the
normal flow velocity is less than 0.3 m/s (0.98 ft/s).
Note) If the detector is not filled with water or many bubbles have adhered inside, the indication
may not reach zero flow rate. In such cases, make a flow of water once to ensure that the
detector is free of bubbles and filled with water.
With incorrect grounding, the indication of flow rate may fluctuate largely. In such cases,
check the grounding condition.