Dwyer德威尔 V4-2-U/V4-SS-2-U/V4-2-U-NH/V4 防爆流量开关

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Service:Gases or liquids compatible with wetted materials.Wetted Materials:Vane: 316 SS; Body: Brass or 316 SS standard; Magnet Keeper: 430 SS standard, 316 SS optional; Options: Other materials also available, consult factory (e.g. PVC, Hastelloy, Nickel, Monel, Titanium).Temperature Limit:-4 to 275°F (-20 to 135°C) standard, MT high temperature option 400°F (205°C) [MT option not UL, CSA, ATEX or IECEx] ATEX and IECEx options, ambient temperature -4 to 163°F (-20 to 73°C); Process temperature -4 to 163°F (-20 to 73°C).Pressure Limit:Brass body 1000 psig (69 bar), 316 SS body 2000 psig (138 bar), optional 5000 psig (345 bar) available with 316 SS body and SPDT switch only.Enclosure Rating:Weatherproof and Explosion-proof. **Listed with UL and CSA for Class I, Groups C and D; Class II, Groups E, F, and G. ATEX CE 0344 EX II 2 G Ex d IIB T6 Gb -20°C≤Tamb≤73°C. -20°C≤Process Temp≤73°C. EC-Type Certificate No.: KEMA 03 ATEX 2383. ATEX Standards: EN60079-0: 2009; EN60079-1: 2007.
IECEx Certified: For Ex d IIB T6 Gb – 20°C≤Tamb≤73°C. -20°C≤Process Temp≤73°C. IECEx Certificate of Conformity: IECEx DEK 11.0071. IECEx Standards: IEC 60079-0: 2007; IEC 60079-1: 2007. Zone I. Also FM approved.Switch Type:SPDT snap switch standard, DPDT snap switch optional.Electrical Rating:UL, FM, ATEX and IECEx models 10 A @ 125/250 VAC. CSA models: 5 A @ 125/250 VAC; 5 A res., 3 A ind. @ 30 VDC . MV option: 1 A @125 VAC; 1 A res., .5 A ind. @ 30 VDC. MT option: 5 A @ 125/250 VAC. [MT and MV option not UL, CSA, FM or ATEX or IECEx].Electrical Connections:UL and CSA models: 16 AWG, 6″ (152 mm) long. ATEX and IECEx unit: Terminal block.Conduit Connection:3/4″ female NPT or 19.05 mm standard or M25 with -BSPT option.Process Connection:1-1/2″ male NPT or 1-1/2″ male BSPT or 38.10 mm.Mounting Orientation:Within 5° of vertical for proper operation. Units for horizontal installation (vertical pipe with up flow) available.Set Point Adjustment:For universal vane: five vane combinations.Weight:4 lb 8 oz (1.9 kg).Agency Approvals:ATEX, CE, CSA, FM, IECEx, UL**.**No housing option (-NH) has no approvals