Quest Controls BACnet T-Stat Instrukcja Obsługi Pobierz pdf (Strona 317)

100

101

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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