1950G系列 防爆型微差壓開(kāi)關(guān)-德威爾Dwyer
1950G系列 防爆型微差壓開(kāi)關(guān)具有德威爾1950系列差壓開(kāi)關(guān)的所有*好性能，還可用于天然氣的監(jiān)測(cè)。它可以用于室外安裝，并達(dá)到UL的防爆認(rèn)證：Class I, Groups A, B, C, & D; Class II, Groups E, F, & G and Class III atmospheres, Directive 94/9/EC，還具備(ATEX) Compliant for CE ATEX II 2G Exd IIB+H T6, CSA & FM approved for Class I, Div. 1, Groups B, C, D; Class II, Div. 1, Groups E, F, G and Class III atmospheres IECEx Ex d IIB+H T6。它尺寸小，重量相當(dāng)于常規(guī)防爆開(kāi)關(guān)的一半。
打開(kāi)鋁制外殼的前蓋板，很容易進(jìn)行和單刀雙擲繼電器，電源進(jìn)行接線。 需要24 VDC, 120 或240 VAC電源，電路連接。開(kāi)蓋時(shí)，螺釘始終留在蓋上，不會(huì)現(xiàn)場(chǎng)丟失。無(wú)需打開(kāi)外殼就可以調(diào)整設(shè)定點(diǎn)。
Service: Air and compatible combustible gases.
Wetted Materials: Consult factory.
Temperature Limits: 0 to 140°F (-17 to 60°C). Note: Set point drift may occur with ambient temperature changes.
Pressure Limits: 45" w.c. (11.2 kPa) continuous; 10 psig (68.95 kPa) surge.
Enclosure Rating: NEMA 3 (IP54), NEMA 7 and 9.
Switch Type: 1 Form C relay (SPDT).
Electrical Rating: 10 A, 120/240 VAC, 28 VDC. Resistive 50 mA, 125 VDC.
Power Requirements: 24 VDC ±10%. 120 or 240 VAC ±10% optional.
Electrical Connections: Internal terminal block.
Process Connections: 1/8" female NPT.
Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations.
Set Point Adjustment: Screw type on top of housing.
Weight: 2 lbs 15.7 oz (1.35 kg).
Agency Approvals: ATEX, CE, CSA, FM, IECEx, UL.
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