Model:HNAG920-PH3
Detection Target:Phosphine (PH₃) toxic gas
Detection Principle:High-precision electrochemical sensor principle (specialized for phosphine gas detection)
Detection Range:0-5(20)ppm, 0-20(100)ppm, 0-2000(4000)ppm, 0-4000(6000)ppm (4 optional customizable ranges)

Our HNAG920-PH3 is a professional handheld single gas detector dedicated to phosphine (PH3) concentration monitoring, with multiple customizable detection ranges to fit industrial grain fumigation, chemical manufacturing, pesticide workshop and other high-risk toxic gas scenarios.

The front is equipped with a 2.0" 320*240 high-resolution color LCD, 4 groups of LED alarm lights (green for normal operation, red for alarm status), independent operation buttons, built-in buzzer, and a dedicated diffusion sampling sensor zone for stable PH3 gas collection.<
The back side is fitted with a sturdy back clip for waist-mounted on-site operation, an official instrument parameter label, and a water trap filter at the pump inlet to block moisture and extend the service life of the sensor. The whole housing adopts PC + TPU composite material, with excellent shockproof, dustproof and anti-drop performance.


This device supports automatic 180° screen flipping, you can read PH3 concentration data clearly even when holding the detector upside down in narrow confined spaces or special operation positions.

It is compatible with 4G, WiFi, Bluetooth and LORA 4 mainstream transmission modes: you can check real-time and historical PH3 data remotely via mobile phone APP, and print detection reports on-site through a Bluetooth portable printer for compliance archiving.

The concealed Type-C USB charging port brings convenient daily recharging, the large-capacity built-in battery can support long-time continuous monitoring for multiple working shifts outdoors.
We provide 4 optional detection ranges to match diversified PH3 concentration test demands: 1. 0-5(20)ppm: For low-concentration precision residual monitoring in grain fumigation warehouses 2. 0-20(100)ppm: For conventional closed fumigation site routine detection 3. 0-2000(4000)ppm: For medium-concentration industrial workshop emission monitoring 4. 0-4000(6000)ppm: For high-concentration extreme working condition emergency detection

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