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    Phosphine (PH3) Gas Sensor, 0-20ppm

    $198.99
    Phosphine (PH3) gas sensor for sale with a good price, has resolution of 0.1ppm, detecting range of 0-20ppm. Digital output signal, principles of electrochemical three-electrode technology. Tolerance ≤±3%, repeatability ≤±1%. Standard MODBUS communication protocol, compatible with infrared, electrochemical, catalytic, semiconductor and other sensors. Widely used in the production of various portable and fixed gas detection equipment, as well as all kinds of occasions and equipment that require gas detection.
    SKU: ATO-GS-PH3
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    PH3 gas sensor with 0-20ppm detecting range. Precision is ±5%FS, resolution is 0.1ppm. Can be operated with electric heat unplugging, factory accurate calibration, the use of no need to re-calibrate. It can be used for phosphine detector, industrial site phosphine gas detection, intelligent municipal phosphine detection, electric power phosphine detection.

    Module Features

    • Supports electric hotplugging and unplugging for seamless operation.
    • Comes factory-calibrated with high accuracy, eliminating the need for recalibration before use.
    • Provides both simultaneous digital (UART) and analog outputs for enhanced usability.
    • Utilizes the standard MODBUS communication protocol for easy integration.
    • Compatible with various sensors, including infrared, electrochemical, catalytic, semiconductor, and others.

    Specification

    Model ATO-K-5S-PH3-20PPM
    Detecting Gas PH3
    Detecting Range 0-20ppm
    Working Voltage DC 5V±0.5V
    Power Consumption ≤1W
    Working Temperature -20℃~50℃
    Humidity 15%~95%RH (no condensation)
    Working Pressure 86~106Kpa
    Adoption Method Natural diffusion
    Detection Unit ppm
    Resolution 0.1ppm
    Technical Principle Electrochemical three electrodes
    Tolerance ≤±3%
    Repeatability ≤±1%
    Response Time ≤60s
    Communication Format UART baud rate 9600, data bit: 8; stop bit: 1; check bit: none
    Communication Protocol Modbus-RTU communication protocol
    Analog Output 0~3V
    Warm-up Time 30s (user adjustable)
    Lifetime 2 years
    Weight 10g


    Structure

    NH3 gas sensor structure

    Note: Tolerance range ±0.25mm

    Working Principle

    Gas sensor module functional block diagram

    The signal of the gas sensor is amplified and filtered, and then the microprocessor performs theoretical calculations on the signal and outputs a digital signal. For different sensors, the filtering and amplifying circuits are also different.

    Application

    PH3  gas sensor application

    Tips: Sensor Shows Constant Zero or Maximum Reading

    Possible Causes

    • Sensor saturation
    • Faulty sensor or circuit
    • Blocked sensor

    Solutions

    • Check for the presence of high concentrations of gas that might saturate the sensor, and ventilate the area if necessary.
    • Inspect the sensor and associated circuitry for faults.
    • Ensure the sensor is not blocked by any physical obstruction.
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