Azbil NWA300, Руководство пользователя

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Chapter 2. Installation
Overview
This chapter covers the mounting and the electrical installation procedures for the NWA
meter, which differ according to whether or not the transmitter is provided with an output
terminal for external meters, and to whether one or multiple NWAs are used.
It covers:
– Selection of mounting location
– Mounting procedure
– Wiring procedure
– Notes on wiring the pressure-resistant explosion-proof model
2-1. Before Installation
Mounting Environment
Overview
To assure the long-term performance and reliability of the NWA, select the mounting location
according to the following criteria:
Environmental conditions
– Install the meter in a location with ambient temperatures within -10 to +60 °C and ambient
humidity within 5 to 100 % RH, and which is not subject to rapid temperature or humidity
changes.
– Avoid installing the meter near large-current cables, motors, or transformers that might
cause electromagnetic interference.
– Avoid installing the meter in locations subject to excessive vibration or shock, or locations
where corrosive gas may be present.
– Avoid installing the meter in locations exposed to direct sunlight or inclement weather.
– Perform all wiring (in either dangerous or non-dangerous locations) with reference to the
Appendix “Installation Specifications”.
– When installing the meter in dangerous locations, ensure that wiring work also meets the
requirements of Section 1-2. Notes on the Explosion-proof NWA.