OPB350L250 spot TT/Optek agent 3.2mm tubular bubble photoelectric switch

Description :

TT Electronics/Optek Agent Shenzhen Huitong Innovation Technology Co., Ltd

Mr. Ping: 15323706628

In many industrial, medical, and daily application scenarios, monitoring the flow of liquids is a key link to ensure smooth and safe processes. The OPB350 series tube liquid sensor launched by TT Electronics brings efficient and reliable solutions to the field of liquid monitoring with its excellent performance and flexible design.

1、 Product Overview

The OPB350 series liquid sensor is designed for use with transparent tubes with outer diameters of 1/16 inch (1.6 mm), 1/8 inch (3.2 mm), 3/16 inch (4.8 mm), and 1/4 inch (6.3 mm). When the liquid passes through these transparent tubes, the sensor can determine the presence or absence of the liquid based on the change in transparency of the liquid and the current change of the phototransistor, thereby achieving accurate monitoring of the liquid flow state.

2、 Product Features

（1） Multiple pipe diameter adaptability

The OPB350 series is compatible with transparent tubes of various outer diameters, covering a common diameter range from 1/16 inch to 1/4 inch, and can meet the liquid monitoring needs of different application scenarios. Whether it is small infusion tubes or slightly thicker liquid delivery tubes, they can be accurately monitored.

（2） Flexible installation method

This series offers two main installation methods. The OPB350L series adopts a pin design that can be directly installed on a printed circuit board (PCB), making it easy to integrate with electronic devices and achieve compact system design. The OPB350W series is equipped with 26 AWG wires and supports remote installation, providing users with greater flexibility, especially suitable for situations where space is limited or monitoring is required at specific locations.

（3） High sensitivity and high reliability

The product uses highly sensitive phototransistors that can quickly respond to changes in liquid transparency. Meanwhile, its sturdy shell design enhances its ability to suppress ambient light, effectively avoiding external light interference and ensuring the accuracy of monitoring results. In addition, this series of sensors also has good anti-interference ability and stability, and can operate stably in various complex industrial environments.

（4） Rich output states

The OPB350 series can output multiple status signals, such as "liquid present", "no liquid present", and "no tube present", providing users with more comprehensive monitoring information. Users can choose the appropriate output method according to their actual needs, which facilitates integration with various control systems.

3、 Application scenarios

The OPB350 series tube liquid sensor is widely used in multiple fields:

（1） Medical field

In medical equipment such as infusion pumps, hemodialysis machines, etc., this sensor can monitor the flow of liquid in real time, ensure accurate delivery of liquid, and ensure the safety of patient treatment. For example, during the infusion process, it is possible to detect in a timely manner whether the liquid has dripped completely, avoiding risks such as air embolism caused by empty liquid droplets.

（2） Industrial sector

In industrial production, the transportation and monitoring of various liquids are crucial. Whether it is the transportation of liquid raw materials in the petroleum and chemical industries, or the filling of liquids in the food and beverage industry, this sensor can provide reliable monitoring solutions to ensure the smooth progress of the production process, improve production efficiency and product quality.

（3） Office equipment field

In office equipment such as printers, copiers, etc., this sensor can be used to monitor the usage of liquids such as ink and toner, and promptly remind users to replenish consumables to avoid equipment failures caused by insufficient consumables.

4、 Electrical specifications

（1） Absolute maximum rated value (TA=25 ° C, unless otherwise specified)

• Storage temperature: -40 ° C to+100 ° C
• Working temperature: -40 ° C to+85 ° C
• Pin soldering temperature: 260 ° C (soldering with an electric soldering iron for 5 seconds at a distance of 1/16 inch from the housing)

（2） LED parameters

• Positive DC current: 50 mA
• Peak forward current (2 μ s pulse width, 0.1% duty cycle): 1 A
• Reverse DC voltage: 2 V
• Power consumption: 100 mW

（3） Output phototransistor parameters

• Collector emitter voltage: 24 V or 30 V
• Collector DC current: 50 mA
• Power consumption: 100 mW

5、 Product model

• OPB350L062: PCB installation, suitable for 1/16 inch pipe diameter
• OPB350W062Z: Wired component with installation buckle, suitable for 1/16 inch pipe diameter
• OPB350L125: PCB installation, suitable for 1/8 inch pipe diameter
• OPB350C125Z (discontinued): Wired component with installation buckle and Molex connector 50-57-9404, suitable for 1/8 inch pipe diameter
• OPB350W125Z: Wired component with installation buckle, suitable for 1/8 inch pipe diameter
• OPB350L187: PCB installation, suitable for 3/16 inch pipe diameter
• OPB350W187Z: Wired component with installation buckle, suitable for 3/16 inch pipe diameter
• OPB350L250: PCB installation, suitable for 1/4 inch pipe diameter
• OPB350W250Z: Wired component with installation buckle, suitable for 1/4 inch pipe diameter

6、 Installation and use

1. Choose the appropriate model: Based on the actual pipe diameter and installation requirements in the application, select the corresponding OPB350 series model.
2. Installing sensors:

• For PCB installation models (such as OPB350L series), solder or install the sensor directly onto the printed circuit board, ensuring that the pins are aligned with the PCB pads.
• For wired components (such as OPB350W series), connect the sensor wires to the control circuit and fix the sensor position as needed.

1. Connecting the pipeline: Insert the transparent tube into the detection area of the sensor to ensure proper alignment between the pipeline and the sensor, avoiding light leakage.
2. Debugging and Calibration: Based on actual application requirements, the current changes of phototransistors are recorded by testing the states of different liquids (such as clean water, colored liquids, etc.), in order to determine typical current values under different states for accurate judgment during subsequent monitoring.

The OPB350 series tube liquid sensor provides an efficient and convenient solution for liquid monitoring with its flexible adaptability, high sensitivity, and reliability. It is suitable for various liquid monitoring scenarios and is the ideal choice for your liquid monitoring applications.

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