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免費(fèi)會員·9年Mercoid 浮筒液位開關(guān) 205系列
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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 |
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