Zone 0
Explosive gas atmosphere present continuously or for long periods
Zone 1
Explosive gas atmosphere likely to occur in normal operation
Zone 2
Explosive gas atmosphere unlikely to occur and, if it does, only for a short period
Zone 20
Explosive dust atmosphere present continuously or for long periods
Zone 21
Explosive dust atmosphere likely to occur in normal operation
Zone 22
Explosive dust atmosphere unlikely to occur and, if it does, only for a short period
Class I Division 1
Area where flammable gases or vapours are present under normal operating conditions
Class I Division 2
Area where flammable gases or vapours are present only under abnormal conditions
# Certifications
Compliance: IEC TS 60079-32-1, NFPA 77
# Performance
Monitored channels: 8
Monitoring circuit: Intrinsically safe
Monitored resistance: ≤ 10 Ohm (± 10%)
Relay outputs: 8 channel contacts, 2 group contacts, 1 fault contact (volt-free)
Contact rating: 240 V AC 5 A 500 VA max; 30 V DC 2 A 60 VA max
# Electrical
Power supply unit (Zone 2/21) – Power supply: 110 or 240 V AC, 50-60 Hz, 200 mA
Power supply unit – Rated power: 10 W
# Mechanical
Monitoring unit (Zone 0/20) – Material: AISI 304 stainless steel
Monitoring unit – Cable entries: 3 x M20, 1 x M25
Power supply unit – Material: Carbon-loaded GRP or AISI 304 stainless steel
Power supply unit – Cable entries: 12 x M20
8-way junction box: 10 x M20, 1 x M25 (GRP or stainless steel)
4-way junction box: 6 x M20, 1 x M25 (GRP or stainless steel)
Remote indicator station (Zone 0/20): GRP or stainless steel, 1 x M20
# Environmental
Monitoring unit – Ingress protection: IP66
Ambient temperature: -40 °C / +60 °C
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