Description:

The OPB350 series liquid sensor is designed to work with 1/16” [1.6mm] 1/8” [3.2mm], 3/16” [4.8 mm] and 1/4” [6.3 mm] outside diameter clear tubes. When output reference circuitry is added, multiple output states such as “fluid present,” “no fluid present” and “no tube present” can be recognized.

Clear liquid present causes the phototransistor to sink the maximum current, while dark liquid present causes it to sink the minimum current. As bubbles pass through the tube, the signal will vary between the “l(fā)iquid present” and “no liquid” states. If no tube is present, the phototransistor sinks current between the dark fluid and clear fluid states. The customer will have to identify the typical current values for each situation. The ratio between the different states allows acknowledgement of different conditions.

The OPB350L series have leads that are designed to mount directly to PCBoards. The OPB350W series with 26 AWG wires are remote mountable. The OCB350 series provides a full solution with automatic calibration capability and a preset trip level.

The OCB350 series is configured to optimize the design effort needed to use a fluid sensor with the addition of self calibration circuitry. The OCB350 series are easy to use requiring only an optical device and power supply. Four lights are provided on the board that acknowledge when the device is calibrated (Green LED), that the device could not be calibrated (Red LED) and when the analog output has reached the logical trip higher than the calibration point (Blue LED) or lower than the calibration point (Green LED). The internal phototransistor load resistance can be set for three different values (~2.5K, ~9.6K or ~27K Ohms). A Reset/Clear pin is provided for remote signaling to calibrate of the system.

The OCB350 series comes with an OPB350L_ _ _Z, PCBoard, interface cable (OCB100-MC24) and all the necessary electronics required for sensing either transmissive or opaque fluids. See “Theory of Operation” for detailed information. For a custom PCBoard design for your unique challenge, contact your OPTEK representative.

Features:

• Can identify if liquid is present in clear tubes that have an outside diameter of 1/16” [1.6mm], 1/8" [3.2mm], 3/16" [4.8 mm] or 1/4" [6.3 mm]

• Opaque plastic housing enhances ambient light rejection

• Printed circuit board mounting or 24” (610 mm) 26 AWG wires

Applications:

• Non-contact fluid sensing

• IV fluid

• Oils and other petroleum products

• Colored fluids

• Toner fluids

• Water

OPB350L125氣泡液位傳感器說明：
OPB350系列液體傳感器設(shè)計(jì)用于1/16英寸[1.6mm]1/8英寸[3.2mm]、3/16英寸[4.8mm]和1/4英寸[6.3mm]外徑的透明管。當(dāng)添加輸出參考電路時(shí)，可以識(shí)別多種輸出狀態(tài)，例如“有流體”、“無(wú)流體”和“無(wú)管存在”。
透明液體的存在使光電晶體管吸收最大電流，而深色液體的存在使光電晶體管吸收最小電流。當(dāng)氣泡通過管道時(shí)，信號(hào)將在“有液體”和“無(wú)液體”狀態(tài)之間變化。如果沒有管存在，光電晶體管在暗流體和透明流體狀態(tài)之間吸收電流。客戶必須確定每種情況下的典型電流值。不同狀態(tài)之間的比率允許確認(rèn)不同的條件。
OPB350L系列具有設(shè)計(jì)用于直接安裝到PCB板的引線。OPB350W系列具有26根AWG導(dǎo)線，可遠(yuǎn)程安裝。OCB350系列提供具有自動(dòng)校準(zhǔn)功能和預(yù)設(shè)跳閘水平的完整解決方案。
OCB350系列配置為優(yōu)化使用流體傳感器所需的設(shè)計(jì)工作，并添加自校準(zhǔn)電路。OCB350系列易于使用，只需要光學(xué)設(shè)備和電源。電路板上提供了四個(gè)指示燈，用于確認(rèn)設(shè)備何時(shí)校準(zhǔn)（綠色LED）、設(shè)備何時(shí)無(wú)法校準(zhǔn)（紅色LED）、模擬輸出何時(shí)達(dá)到高于校準(zhǔn)點(diǎn)（藍(lán)色LED）或低于校準(zhǔn)點(diǎn)（綠色LED）的邏輯跳閘。內(nèi)部光電晶體管負(fù)載電阻可設(shè)置為三個(gè)不同的值（~2.5K、~9.6K或~27K歐姆）。復(fù)位/清除引腳用于遠(yuǎn)程信號(hào)，以校準(zhǔn)系統(tǒng)。
OCB350系列配有OPB350L___Z、PCB板、接口電纜（OCB100-MC24）以及傳感透射或不透明液體所需的所有必要電子設(shè)備。有關(guān)詳細(xì)信息，請(qǐng)參閱“操作理論”。
OPB350L125氣泡液位傳感器特征：
•能夠識(shí)別外徑為1/16英寸[1.6mm]、1/8英寸[3.2mm]、3/16英寸[4.8mm]或1/4英寸[6.3mm]的透明管中是否存在液體
•不透明塑料外殼增強(qiáng)了環(huán)境光抑制能力
•印刷電路板安裝或24英寸（610毫米）26 AWG電線
應(yīng)用：
•非接觸式流體傳感
•靜脈輸液
•石油和其他石油產(chǎn)品
•有色液體
•碳粉液
•水