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    Picture of Ultrasonic Oxygen Flow Sensor, 0-15L/min, 21-95.6% Picture of Ultrasonic Oxygen Flow Sensor, 0-15L/min, 21-95.6% Picture of Ultrasonic Oxygen Flow Sensor, 0-15L/min, 21-95.6% Picture of Ultrasonic Oxygen Flow Sensor, 0-15L/min, 21-95.6%

    Ultrasonic Oxygen Flow Sensor, 0-15L/min, 21-95.6%

    1 review(s) | Add your review
    SKU: SUCH-O2S-F2000
    $49.87
    ● Detect: Oxygen (O2) ● Concentration: 21-95.6% ● Flow: 0 to 15 L/min ● Serial port UART/9600 bps
    This product has a minimum quantity of 2
    🚚 Free shipping
    🕒 Delivery date: 6-12 days
    🔁 30-day Returns
    Overview

    High-sensitivity and high-resolution oxygen flow sensor for sale, with a concentration range of 21% to 95.6% and a flow detection range of 0 to 15 L/min. It provides real-time output of precise oxygen concentration and flow data. Supports a wide voltage input range of DC 5V to 12V with low power consumption as low as 200mW. Widely used in systems such as ventilators, oxygen generators, and laboratory instruments.

    Feature

    • As an economical oxygen concentration sensor available in the SUCH Sensor Online Store, this sensor utilizes ultrasonic propagation principles to achieve precise measurement of oxygen concentration, flow rate, and temperature, instantly outputting measurement values.
    • Its oxygen concentration detection range is exceptionally broad (0%–100%), making it particularly suitable for monitoring oxygen levels between 21% and 95.6% in oxygen generators. It is an ideal choice for oxygen generator OEMs.
    • The oxygen flow sensor features full-range temperature compensation, low cost, high reliability, ease of use, strong anti-interference capability, and eliminates the need for periodic calibration.
    • Compared to traditional electrochemical sensors, this ultrasonic oxygen sensor offers significantly extended service life. Throughout its entire lifecycle, it automatically calibrates without requiring maintenance, delivering exceptional convenience to users.

    Dimension (unit: mm)

    Oxygen flow sensor dimension

    Detail

    Oxygen flow sensor detail

    Interface Wiring Method

    Oxygen flow sensor interface wiring method

    The oxygen flow sensor utilizes serial port communication, with the interface shown in the diagram. The power supply voltage input port in the diagram is for production use only and should not be accessed by users. The digital signal output port in the diagram is used by users for power-on data transmission and reception.

    Power Supply Voltage Input Interface (4P 2.0mm Terminal)
    Connector Number Function
    A1 Power Ground
    A2 /
    A3 /
    A4 Power Input DC 5~12V
    Digital Signal Output Interface (4P 2.0mm Terminal)
    Connector Number Function
    B1 Power Ground
    B2 Serial Port Transmit
    B3 Serial Port Receive
    B4 Power Input DC 5~12V
    Specs
    Concentration Detection Range 21% to 95.6%
    Concentration Resolution 0.001
    Concentration Detection Accuracy ±1.5% of full scale
    Flow Detection Range 0 to 15 L/min
    Flow Resolution 0.1 L/min
    Flow Detection Accuracy ±0.2 L/min
    Detection Cycle 500 ms
    Preheat Time <10 s
    Communication Method Serial port UART/9600 bps
    Communication Level TTL 2.5 V to 3.5 V, typical 3.3 V
    Operating Temperature 5 to 55°C
    Storage Temperature -5°C to 60°C
    Operating Voltage DC 5V to 12V (±0.25V)
    Operating Current ≤40mA
    Operating Power ≤200mW
    Dimensions 50*24*13.6mm
    Sensor Weight 10.3 ±1g
    Housing Material PBT plastic material
    Service Life >6 years
    Application
    Oxygen flow sensor of medical oxygen concentrator

    Medical Oxygen Concentrator

    Oxygen flow sensor of mining

    Mining

    Oxygen flow sensor of food storage

    Food Storage

    FAQ
    ❯

    To achieve optimal accuracy and performance of the oxygen sensor, please observe the following guidelines during operation:

    1. The gas being tested must be free of water and dust.
    2. Do not touch the circuit board while it is energized.
    3. Wear an anti-static wrist strap when installing the sensor to prevent static electricity from damaging components.
    4. When installing the sensor, ensure gas inlet and outlet pipes align with the direction indicated by the arrows on the sensor.
    ❯

    High-performance oxygen flow sensors, renowned for their exceptional reliability and precision, are widely used in medical, industrial, chemical, mining, and food sectors. They play a critical role in oxygen concentration and flow detection equipment across vital applications such as medical oxygen generators, industrial oxygen production systems, mining operations, and food storage and processing.

    ❯

    The oxygen flow sensor employs standard serial communication with a baud rate of 9600 bps.

    The communication format is: STDO D1 D2 D3 D4 D5 D6 D7 SP, featuring 1 start bit, 8 data bits, and 1 stop bit with no parity bit.

    The transmission mode employed is automatic transmission. The oxygen sensor automatically enters this mode upon power-up (transmitting once every 500ms). Example: When the concentration is 50%, flow rate is 10L/h, and temperature is 21.0°C, the sensor transmits the following data frame.

    Data frame: 0x16 0x09 0x01 0x01 0xf4 0x00 0x64 0x00 0xd2 0x00 0x00 0xb5

    1 review(s)
    5.0 1
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    Elliot Granger | 10/15/2026 9:18 AM
    Oxygen flow sensor was fairly easy to set up
    The sensor is compact, so it was easier to fit into the space I had inside the equipment. I double-checked the inlet and outlet direction before running the first test. Getting the UART data into my test program took a bit of trial and error, but I got it sorted out. I’m now able to read the measurements directly instead of checking them separately.
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