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 “liquid 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气泡液位传感器说明：
OPB350系列液体传感器设计用于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]外径的透明管。当添加输出参考电路时，可以识别多种输出状态，例如“有流体”、“无流体”和“无管存在”。
透明液体的存在使光电晶体管吸收最大电流，而深色液体的存在使光电晶体管吸收最小电流。当气泡通过管道时，信号将在“有液体”和“无液体”状态之间变化。如果没有管存在，光电晶体管在暗流体和透明流体状态之间吸收电流。客户必须确定每种情况下的典型电流值。不同状态之间的比率允许确认不同的条件。
OPB350L系列具有设计用于直接安装到PCB板的引线。OPB350W系列具有26根AWG导线，可远程安装。OCB350系列提供具有自动校准功能和预设跳闸水平的完整解决方案。
OCB350系列配置为优化使用流体传感器所需的设计工作，并添加自校准电路。OCB350系列易于使用，只需要光学设备和电源。电路板上提供了四个指示灯，用于确认设备何时校准（绿色LED）、设备何时无法校准（红色LED）、模拟输出何时达到高于校准点（蓝色LED）或低于校准点（绿色LED）的逻辑跳闸。内部光电晶体管负载电阻可设置为三个不同的值（~2.5K、~9.6K或~27K欧姆）。复位/清除引脚用于远程信号，以校准系统。
OCB350系列配有OPB350L___Z、PCB板、接口电缆（OCB100-MC24）以及传感透射或不透明液体所需的所有必要电子设备。有关详细信息，请参阅“操作理论”。
OPB350L125气泡液位传感器特征：
•能够识别外径为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体
•不透明塑料外壳增强了环境光抑制能力
•印刷电路板安装或24英寸（610毫米）26 AWG电线
应用：
•非接触式流体传感
•静脉输液
•石油和其他石油产品
•有色液体
•碳粉液
•水