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Adjustable deadband, flanged chamber and side mount are featured in the heavy duty reliable 225 series. A choice of four operating styles are offered: 1. Single stage adjustable deadband suitable for pump operation; 2. Two stage operation with adjustable lower stage, fixed upper stage for pump and high alarm; 3. Fixed lower stage and adjustable upper stage for pump and low alarm; 4. Fixed upper and lower stage for high and low alarm. Alarm stages can also be used for shutdown. Adjustable level changes are available in increments of 12", 24", 36", and 48".

Leak proof all welded heavy duty carbon steel bodies coupled with snap action or mercury switches provide reliable, long term service for compatible liquids. The use of an external magnet reduces the possibility of magnetic particle build-up inside the armature tube and subsequent loss of operation as may occur with the internal magnet repulsion design. A variety of snap action or mercury switches in SPST, SPDT, DPDT or DPST configurations will satisfy most electrical requirements. These switch assemblies are contained in NEMA-1 general purpose, NEMA-4X weatherproof, NEMA-7- 9 groups B, C, D, E, F, G, explosion-proof or explosion-proof – vapor proof enclosures.

產(chǎn)品介紹：光電式液位限位開(kāi)關(guān)用于測(cè)量液位的極限位置，幾乎不受折射系數(shù)、顏色、密度、介電常數(shù)和電導(dǎo)率等物理性質(zhì)的影響。此外，該限位開(kāi)關(guān)還可用于小體積內(nèi)的液位測(cè)量。此開(kāi)關(guān)有一個(gè)紅外線(xiàn) LED 和一個(gè)光電晶體管組成，其中 LED 的光線(xiàn)被導(dǎo)向到棱鏡。只要棱鏡的傳感器尖端處于氣相中，光線(xiàn)就會(huì)在棱鏡中反射至接收器。如果容器中的液位上升并浸濕玻璃尖端的大約 2/3，進(jìn)入液體的紅外光束則會(huì)中斷，只有少部分到達(dá)接收器。該差值通過(guò)電子元件計(jì)算，并會(huì)相應(yīng)觸發(fā)開(kāi)關(guān)操作。OLS 型光電液位開(kāi)關(guān)也提供防爆型號(hào)（0 區(qū)和 1 區(qū)）。如果結(jié)合 OSA-S 轉(zhuǎn)換放大器，該傳感器還可用作溢流控制裝置。該款產(chǎn)品堅(jiān)固耐用，專(zhuān)為惡劣工作環(huán)境而設(shè)計(jì)。連接到開(kāi)關(guān)放大器的電纜不需要任何屏蔽措施，因此可使用普通而經(jīng)濟(jì)的電纜走線(xiàn)。連接轉(zhuǎn)換放大器的線(xiàn)纜無(wú)需任何屏蔽，連接簡(jiǎn)便，成本低。OSA-S 型轉(zhuǎn)換放大器使用本安信號(hào)電路。對(duì)于 19" 插卡型號(hào)，除更改警報(bào)方向的開(kāi)關(guān)和用于時(shí)間延遲的電位計(jì)外，所有工作元件都可從正面取放。如果結(jié)合附加盒使用，可通過(guò)透明外蓋看到切換狀態(tài)。應(yīng)用化工工業(yè)、石化工業(yè)、天然氣和海上平臺(tái)應(yīng)用船舶和機(jī)械制造、制冷設(shè)備發(fā)電設(shè)備、發(fā)電廠生產(chǎn)用水和飲用水處理廢水和環(huán)境工程功能特性溫度范圍：-269 ... +400℃溫度范圍：真空至50 MPa特殊型號(hào)：適用于高壓和分離層測(cè)量防爆型信號(hào)通過(guò)單獨(dú)的 OSA-S 型號(hào)轉(zhuǎn)換放大器進(jìn)行處理

Inexpensive yet rugged construction in a welded chamber control. The 291 series is specifically designed for single stage operation where pressure does not exceed 350 psig (24 bar) at 100°F (38°C) or 300 psig (21 bar) at 600°F (315°C) available with a variety of hermetically sealed snap switch or mercury switch circuits protected by a general purpose, weatherproof or explosion-proof enclosure and will accommodate specific gravities down to 0.60.

產(chǎn)品介紹：OLS-C01 型光電 OEM 液位開(kāi)關(guān)用于監(jiān)控液位，其由紅外 LED 和光線(xiàn)接收器組成。LED光線(xiàn)直接進(jìn)入到光電傳感器前端的棱鏡里，所以只要傳感器前端不浸入到液體中，光線(xiàn)就會(huì)在棱鏡中經(jīng)過(guò)反射傳到感光接收器上所以當(dāng)液位上升浸沒(méi)了光電傳感器的前尖端時(shí)，光束就會(huì)被切斷，感光元件就捕捉不到或者只能捕捉到微弱的光線(xiàn)，這時(shí)光電開(kāi)關(guān)就會(huì)被觸發(fā)產(chǎn)生開(kāi)關(guān)動(dòng)作。開(kāi)關(guān)的狀態(tài)可以直接在光電傳感器（黃色LED）上觀察到。應(yīng)用機(jī)床液壓系統(tǒng)設(shè)備生產(chǎn)和機(jī)械制造泵技術(shù)液體應(yīng)用場(chǎng)合，例如油、水、蒸餾水、水介質(zhì)功能特性緊湊型設(shè)計(jì)，無(wú)移動(dòng)元件安裝位置可調(diào)精度 ±0.5 mm開(kāi)關(guān)狀態(tài)可視選擇電子元件：PUR及PVC線(xiàn)纜或M8接頭

產(chǎn)品介紹：OEM型光電液位開(kāi)關(guān)OLS-C05用于監(jiān)測(cè)液位，其光電傳感器由紅外LED和光線(xiàn)接收器組成。LED光線(xiàn)直接進(jìn)入到光電傳感器前端的棱鏡里，所以只要傳感器前端不浸入到液體中，光線(xiàn)就會(huì)在棱鏡中經(jīng)過(guò)反射傳到感光接收器上。所以當(dāng)液位上升浸沒(méi)至光電傳感器的尖端時(shí)，光束就會(huì)被切斷，感光元件就捕捉不到或者只能捕捉到微弱的光線(xiàn)，這時(shí)光電開(kāi)關(guān)就會(huì)被觸發(fā)產(chǎn)生開(kāi)關(guān)動(dòng)作。開(kāi)關(guān)的狀態(tài)可以直接在光電傳感器（紅色LED）上觀察到。OLS-C05型號(hào)液位開(kāi)關(guān)專(zhuān)用于**溫度達(dá)+170℃的液體中。應(yīng)用機(jī)床液壓系統(tǒng)設(shè)備生產(chǎn)和機(jī)械制造水技術(shù)液體應(yīng)用場(chǎng)合，如油、水、蒸餾水、水介質(zhì)功能特性可以在高達(dá)+170℃的高溫下使用安裝位置可調(diào)精度：±2 mm開(kāi)關(guān)點(diǎn)狀態(tài)可視可選電氣連接：PUR和PVC電纜、M12航空接頭或EN 175301-803 A赫斯曼接頭

產(chǎn)品介紹：OLS-5200光電液位開(kāi)關(guān)適用于造船業(yè)中的液位監(jiān)控。光電傳感器由紅外LED和光接收器組成。從 LED 發(fā)出的光線(xiàn)直接射入傳感器頂端的棱鏡中。只要傳感器頂端不被液體浸沒(méi)，光線(xiàn)就會(huì)經(jīng)棱鏡反射到接收器中。如果液體在容器中升高逐漸淹沒(méi)頂端，光束就會(huì)被液體阻擋， 接收器將無(wú)法接收或僅接收到微弱的光線(xiàn)，此時(shí)開(kāi)關(guān)點(diǎn)切換會(huì)被觸發(fā)。OLS-5200型光電傳感器專(zhuān)為海上應(yīng)用場(chǎng)合而設(shè)計(jì)，因此該產(chǎn)品極為抗震，耐沖擊。應(yīng)用造船業(yè)發(fā)動(dòng)機(jī)技術(shù)液壓動(dòng)力單元適用于液體介質(zhì)，如油、水、蒸餾水、及水性介質(zhì)功能特性抗震，耐沖擊可靠性高可操作范圍：130 °C 和 2.5 MPa 認(rèn)證符合 DNV GL

Time proven magnetic head leak proof construction combines with a heavy duty welded chamber to provide excellent reliability for control of compatible liquids. Operating pressures of 1250 psig (86 bar) at 650°F (345°C) and 750 psig (52 bar) at 750°F (400°C) are standard. The use of an external magnet reduces the possibility of magnetic particle build up inside the armature tube and subsequent loss of operation as may occur with the internal magnet repulsion design. The controls feature carbon steel bodies and stainless steel internal trim. Process mounting configurations include either side/bottom combination 1" NPT/socket weld hubs, side/bottom flanges or side/side flanges. A variety of hermetically sealed snap action or mercury switches are available in SPST, SPDT, or DPDT action for single or two stage operation. Mercury or Gold alloy snap action contacts are suitable for low current DC applications. A full range of switch enclosures are offered. Many chamber, enclosure and switch combinations are UL approved.