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86個結果

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.

產品介紹:光電式液位限位開關用于測量液位的極限位置,幾乎不受折射系數、顏色、密度、介電常數和電導率等物理性質的影響。此外,該限位開關還可用于小體積內的液位測量。此開關有一個紅外線 LED 和一個光電晶體管組成,其中 LED 的光線被導向到棱鏡。只要棱鏡的傳感器尖端處于氣相中,光線就會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,進入液體的紅外光束則會中斷,只有少部分到達接收器。該差值通過電子元件計算,并會相應觸發開關操作。OLS 型光電液位開關也提供防爆型號(0 區和 1 區)。如果結合 OSA-S 轉換放大器,該傳感器還可用作溢流控制裝置。該款產品堅固耐用,專為惡劣工作環境而設計。連接到開關放大器的電纜不需要任何屏蔽措施,因此可使用普通而經濟的電纜走線。連接轉換放大器的線纜無需任何屏蔽,連接簡便,成本低。OSA-S 型轉換放大器使用本安信號電路。對于 19" 插卡型號,除更改警報方向的開關和用于時間延遲的電位計外,所有工作元件都可從正面取放。如果結合附加盒使用,可通過透明外蓋看到切換狀態。應用化工工業、石化工業、天然氣和海上平臺應用船舶和機械制造、制冷設備發電設備、發電廠生產用水和飲用水處理廢水和環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:適用于高壓和分離層測量防爆型信號通過單獨的 OSA-S 型號轉換放大器進行處理

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.

產品介紹:OLS-C01 型光電 OEM 液位開關用于監控液位,其由紅外 LED 和光線接收器組成。LED光線直接進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,光線就會在棱鏡中經過反射傳到感光接收器上所以當液位上升浸沒了光電傳感器的前尖端時,光束就會被切斷,感光元件就捕捉不到或者只能捕捉到微弱的光線,這時光電開關就會被觸發產生開關動作。開關的狀態可以直接在光電傳感器(黃色LED)上觀察到。應用機床液壓系統設備生產和機械制造泵技術液體應用場合,例如油、水、蒸餾水、水介質功能特性緊湊型設計,無移動元件安裝位置可調精度 ±0.5 mm開關狀態可視選擇電子元件:PUR及PVC線纜或M8接頭

產品介紹:OEM型光電液位開關OLS-C05用于監測液位,其光電傳感器由紅外LED和光線接收器組成。LED光線直接進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,光線就會在棱鏡中經過反射傳到感光接收器上。所以當液位上升浸沒至光電傳感器的尖端時,光束就會被切斷,感光元件就捕捉不到或者只能捕捉到微弱的光線,這時光電開關就會被觸發產生開關動作。開關的狀態可以直接在光電傳感器(紅色LED)上觀察到。OLS-C05型號液位開關專用于**溫度達+170℃的液體中。應用機床液壓系統設備生產和機械制造水技術液體應用場合,如油、水、蒸餾水、水介質功能特性可以在高達+170℃的高溫下使用安裝位置可調精度:±2 mm開關點狀態可視可選電氣連接:PUR和PVC電纜、M12航空接頭或EN 175301-803 A赫斯曼接頭

產品介紹:OLS-5200光電液位開關適用于造船業中的液位監控。光電傳感器由紅外LED和光接收器組成。從 LED 發出的光線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,光線就會經棱鏡反射到接收器中。如果液體在容器中升高逐漸淹沒頂端,光束就會被液體阻擋, 接收器將無法接收或僅接收到微弱的光線,此時開關點切換會被觸發。OLS-5200型光電傳感器專為海上應用場合而設計,因此該產品極為抗震,耐沖擊。應用造船業發動機技術液壓動力單元適用于液體介質,如油、水、蒸餾水、及水性介質功能特性抗震,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.

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