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Mercoid 浮筒液位開關(guān) 205系列

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產(chǎn)品簡介

Mercoid浮筒液位開關(guān)205系列使用壽命長，運(yùn)行可靠是205系列的固有特點(diǎn)

產(chǎn)品介紹

Mercoid 浮筒液位開關(guān) 205系列 使用壽命長，運(yùn)行可靠是205系列的固有特點(diǎn)。重型焊接碳鋼室提供了一個操作高達(dá)1250 psi (86 bar)和工藝溫度高達(dá)650°F(343°C)、400°F(205°C)的電氣頭總成控制。外部磁鐵的使用減少了磁粒子在電樞管內(nèi)積聚的可能性，以及隨后的操作損失，因?yàn)榭赡軙l(fā)生與內(nèi)部磁鐵斥力設(shè)計。結(jié)構(gòu)的選擇提供了適用于低比重(0.75)的設(shè)備。電氣要求是通過使用密封的快速動作或水銀開關(guān)在各種行動，包括SPST, SPDT, DPDT和DPST安排。可選電路可用于低電流/電壓直流; 大電流直流; 或高溫應(yīng)用。檢查當(dāng)前圖表中您的應(yīng)用的開關(guān)。標(biāo)準(zhǔn)工藝連接是組合1“NPT和1"承插焊接輪轂。可選擇法蘭連接

C1-75:Minimum specific gravity 0.75. Process pressure 1250 psig (86 bar) @ 100°F (38°C), 650°F (343°C).*

Temperature Limit:Ambient Temperature: 212° F (100°C); Process Temperature: up to 650°F (343°C).

*Heat fins (HF) and/or high temperature switches should be considered for process temperatures above 500°F (260°C).

Switch Type:Snap action or mercury. See charts A and B.

Electrical Rating:See charts A and B.

Wiring Connections:G, WT or E enclosure, terminal block. EV enclosure 18" (460 mm) leads.

Process Connections:Combination 1" NPT/socket weld hubs or flanges. See chart C.

Enclosures:G, painted steel and aluminum; WT, painted steel, aluminum and neoprene; E, aluminum; EV, aluminum and neoprene.

Weight:205, 40 lb (18 kg); 207, 50 lb (22.7 kg); 208, 57 lb (25.8 kg).

Agency Approval:UL.

Suggested Specifications
Liquid level control shall be 205 (207) (208) Series with combination 1" NPT/socket weld hubs (flanged) process connections. Chamber shall be welded suitable for operation at 1250 psig (86 bar) at 100°F (38°C), 650°F (343°C) at a minimum specific gravity of 0.75. Circuits shall be (hermetically sealed) snap action (mercury) switch (SPST) (SPDT), (DPDT). Enclosure shall be general purpose (weatherproof) (explosion-proof) (explosion-proof - vapor-proof). Switch mechanism shall be gravity return and shall be activated by a stainless steel float.

Model Chart

EXAMPLE	205	WT	7810	10	C1	75		205-WT-7810-10-C1-75 Liquid Level Control, welded carbon steel chamber, weatherproof enclosure, SPDT snap switch, fixed deadband, automatic reset, side/bottom process connections, combination 1" NPT/socket weld hubs, minimum specific gravity 0.75, operating pressure 1250 psig (86 bar) at 650ºF (343ºC).
CONNECTION	205							Liquid level control
ENCLOSURE		G						General purpose, NEMA 1
		WT						Weatherproof, NEMA 3R, 4, 4X (Not CSA)
		E						Explosion-proof, NEMA 7, 9, Class I Groups B, C, D, Class II Groups E, F, G (CSA approved Groups C, D, E, F, G only)
		EV						Explosion-proof, vapor proof, NEMA 7, 9, Class I Groups B, C, D, Class II Groups E, F, G (CSA approved Groups C, D, E, F, G only)
CIRCUITS (for electrical circuits, See charts A & B below)			48XX					Single stage, mercury switch, see chart A.
			48XX	XX				Two stage, mercury switch, see chart A.
			78XX					Single stage, snap switch, see chart B.
			78XX	XX				Two stage, snap switch, see chart B.
			78XXHM					Hermetically sealed snap switch, see chart B.
			98XX					Single stage, high capacity DC snap switch, see chart B.
			98XX	XX				Two stage, high capacity DC snap switch, see chart B.
			10XX					Single stage, high temperature snap switch, see chart B.
			10XX	XX				Two stage, high temperature snap switch, see chart B.
CHAMBER MATERIAL								Refer to chart C below for pressure/temperature ratings
					C1			Carbon steel body
					HFC1			Heat fins carbon steel body
MINIMUM SPECIFIC GRAVITY						75		0.75 specific gravity
OPTIONS							R	Manual reset for single stage
							R1	Manual reset for lower stage of 2-stage controls
							R2	Manual reset for upper stage of 2-stage controls
							R3	Manual reset for both stages of 2-stage controls
							STW	SS tag wired
							01	Breather only (E-Housing only)
							02	Drain only (E-Housing only)
							12	Breather and drain (E-Housing only)
							23720	Fungus proofing special 23720