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Dwyer 防爆差壓開(kāi)關(guān) AT11900系列

Dwyer 防爆差壓開(kāi)關(guān) AT11900系列產(chǎn)品詳情

Dwyer 防爆差壓開(kāi)關(guān) AT11900系列

Series AT11910 ATEX/IECEx Approved 1910 Differential Pressure Switch

Our most popular Differential Pressure Switch is now available in a flame-proof ATEX/IECEx approved package in theSeries AT11910 . This pressure switch combines advanced design and precision construction to make these switches able to perform many of the tasks of larger, costlier units. For air and non-combustible compatible gases, the AT11910 Series switches have set points from 0.07 to 20 in w.c. (1.8 to 508 mm). Set point adjustment is easy with range screw located inside the switch enclosure. Series AT11910 ATEX/IECEx enclosures are available in aluminum enclosures and ideal for low pressure, hazardous area applications.

Important notes for installation:
• Cables must be fitted through 1/2" NPT cable glａnd or ATEX/IECEx conduit (not supplied with instrument). • Make sure after cabling to close tight cover and cable gland, in order to keep IP66 rating (IP65 with option OPV, overpressure relief valve). • Open cover only after de-energizing instrument.

Service:Air and non-combustible, compatible gases.

Wetted Materials:Consult factory.

Temperature Limits:-30 to 180°F (-34 to 82.2°C); (Note:
Product temperature limits differ from case).

Pressure Limits:45 in w.c. (11.2 kPa) continuous, 10 psig (68.95 kPa) surge.

Switch Type:SPDT.

Repeatability:±3% FS.

Electrical Rating:15 A @ 120 to 480 VAC, 60 Hz. Resistive 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC, 60 Hz. Derate to 10 A for operation at high cycle rates.

Mounting Orientation:Diaphragm in vertical position.

Set Point Adjustment:Screw type on pressure switch inside the Exd enclosure accessible by hole with plug on housing. Setpoint regulation must be done with instrument de-energized. Follow instructions and safety warning to open cover.

Enclosure Rating:IP66. IP65 with option OPV, overpressure relief valve.

Housing Material:Aluminum.

Finishing:Texture epoxy coat RAL7038.

Pressure Connections:1/8" NPT female brass (SS optional). In presence of acetylene it is necessary to use SS.

Electrical Connections:Two 1/2" FNPT. Cable glａnd not included.

Weight:7.49 lb (3.4 kg).

ATEX Certificate:BVI 14ATEX0072.

Agency Approvals:ATEX Compliant CE 1370 Ex II 2G Ex d IIC T6 Gb / II 2D Ex tb IIIC T85°C Db, -60°C=Tamb=+60°C IECEx Compliant: Ex d IIC T6 Gb / Ex tb IIIC T85°C Db

Model Chart

EXAMPLE	AT11910	00	A	B	1	X	T2		Series AT11910-00-AB1XT2, Pressure Switch with Conduit ATEX/IECEx Enclosure, range 0.07-0.15" w.c., aluminum housing, blind top cover, 1/8" npt female brass pressure port, standard plug without overpressure relief valve, stainless steel tag
SERIES	AT11910								Pressure Switch with Conduit Atex Enclosure
RANGE		00 0 1 5 10 20							0.07 - 0.15" w.c. 0.15 - 0.55" w.c. 0.4 - 1.6" w.c. 1.4 - 5.5" w.c. 3.0 - 11.0' w.c. 4.0 - 20.0" w.c.
HOUSING MATERIAL			A						Aluminum
COVER				B					Blind Top Cover
PRESSURE CONNECTION					1 2				1/8" npt female Brass Pressure Port 1/8" npt female Stainless Steel Port
OVERPRESSURE PLUG						X OPV			Standard without Overpressure Relief Valve Overpressure Relief Valve material same as ports
TAG							T2		Stainless Steel Tag
OPTIONS								G	Gold Contacts

關(guān)鍵詞：差壓開(kāi)關(guān) ERP

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