Quest Controls BACnet T-Stat Manual de servicio Pagina 317

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Use in Hazardous Environments 317
Classification Meeting CENELEC and IEC
WAGO-I/O-SYSTEM 750
BACnet/IP Controller
Explosive areas resulting from gases, fumes or mist:
Zone 0 areas are subject to an explosive atmosphere
(> 1000 h /year) continuously or for extended periods.
Zone 1 areas can expect the occasional occurrence of an explosive
atmosphere (> 10 h 1000 h /year).
Zone 2 areas can expect the rare or short-term occurrence of an explosive
atmosphere (> 0 h 10 h /year).
Explosive areas subject to air-borne dust:
Zone 20 areas are subject to an explosive atmosphere
(> 1000 h /year) continuously or for extended periods.
Zone 21 areas can expect the occasional occurrence of an explosive
atmosphere (> 10 h 1000 h /year).
Zone 22 areas can expect the rare or short-term occurrence of an explosive
atmosphere (> 0 h 10 h /year).
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