Azbil NWA300, Руководство пользователя

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3
1-2. Notes on the Explosion-proof NWA
Overview
The NWA explosion-proof model is certified to comply with Japan’s Industrial Safety and
Health Laws, and can thus be used in dangerous locations. For proper use, the following
guidelines must be followed.
Pressure-Resistant, Explosion-proof Structure
The pressure-resistant and explosion-proof structure is totally sealed, which contains possible
internal explosions, and prevents ignition of external explosive gases.
Selection of Mounting Location
When selecting a mounting location for the NWA, observe the following conditions:
– Dangerous locations in which the NWA can be safely installed are defined as follows:
Gases classed as requiring explosion-
proof instruments Atmospheres with a flashpoint of 85C or
higher
The NWA analog meter can be installed in Type 1 or 2 locations; it cannot be installed in
Type 0 locations .