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
# General
Product type: Type Y/Z Rapid Exchange purge and pressurisation system
Brand: Pepperl+Fuchs
Series: Bebco EPS 3000 (3003, 3004)
Reference standards: NEC (NFPA 70), NFPA 496, ISA 12.4
Protective gas: instrument air or inert gas
Max enclosure volume: 3003 90 ft³ (2.54 m³); 3004 250 ft³
Required vent: EPV-3 (3003), EPV-4 (3004)
Safe pressure: 0.25" wc (6.35 mm)
Leakage compensation flow: 0.1–3.5 SCFH (2.8–99 l/h)
3003 exchange time: 1 min per 3.0 ft³ (4 exchanges), 1 min per 2.4 ft³ (5 exchanges)
Mounting: VML, VMR, HMT, HMB, VPM, HPM, WM, CK (CK LPS only)
# Certifications
Type Y: Class I, Division 1 to Division 2
Type Z: Class I, Division 2 to non-hazardous
Approvals: FM, cULus
Groups: A, B, C, D (LPS, WPSA); C, D (WPS)
# Electrical
WPS pressure switch contacts: 120 V AC, 15 A
WPSA pressure switch contacts: 120/220 V AC; 24 V DC, 10 A; 125 V DC, 50 mA
WPSA supply: 120 V AC standard; 24 V DC, 220 V AC, 240 V AC on request
Pressure switch conduit entry: 1/2" FPT
# Mechanical
Supply pressure: 80–120 psi (5.5–8.3 bar)
3003 purge flow: 12 SCFM / 720 SCFH (regulator set to min. 60 psi)
3003 ports: system supply 1/4" FPT, enclosure supply 1/2" FPT, reference 1/4" tube
Ambient temperature: -29 to 49 °C
Materials: anodised aluminium manifold, 316 stainless steel valves and fittings, 316 stainless steel face plate
3003 mass: 4.5 kg (LPS), 6.8 kg (WPS)
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