High-Sensitivity Detection – Accurately detects refrigerant & combustible gas leaks (R134a, LPG, methane, etc.)
Flexible Probe Design – Easily reaches tight spaces in AC systems and pipelines
Triple Alarm System – Sound, LED light & vibration alerts for instant leak identification
Portable & Rechargeable – Built-in lithium battery with long working time for field use
Ideal for HVAC & Auto AC – Perfect for technicians handling refrigeration and gas systems

Bosean BH90E Gas Leak Detector is a professional-grade, portable gas leak detector characterized by its flexible gooseneck probe. While often used for combustible gases like Methane and Propane, its high-sensitivity semiconductor sensor makes it an effective tool for identifying leaks in pipelines, valves, and storage tanks across industrial and residential settings.
Flexible Gooseneck Design: The adjustable 360° probe allows you to reach into tight, confined spaces, behind appliances, or deep into engine bays where fixed sensors cannot go.
Triple Alarm System: When a leak is detected, the device triggers an audible buzzer (85dB), visual LED flashing, and haptic vibration, ensuring you notice the alert even in noisy environments.
High-Resolution Display: Features an STN LCD screen that provides real-time concentration readings, battery status, and time.
Rugged Construction: The housing is made of high-strength engineering plastics and anti-slip rubber, rated IP65 for water and dust resistance.
Adjustable Thresholds: Users can manually set "Low" and "High" alarm points (defaulted at 500ppm and 2000ppm) to suit specific safety protocols.
| Feature | Detail |
| Detection Range | 0–10,000 ppm (μmol/mol) |
| Sensor Type | Imported FIGARO Semiconductor |
| Response Time | < 30seconds |
| Warm-up Time | 60 seconds |
| Power Supply | 3.7V 1800mAh Rechargeable Lithium Battery |
| Battery Life | 8 hours of continuous use |
| Explosion-proof Grade | Exib IIB T3 Gb |
The BH-90E is designed to detect a wide array of combustible and volatile gases, including:
Natural Gas (Methane/CH4)
LPG (Propane and Butane)
Coal Gas / Artificial Gas
Refrigerant Residues (Note: While highly sensitive to many gases, specifically calibrated "halogen" detectors are usually preferred for pure Freon; the BH-90E is the "all-rounder" for flammable vapors).
Fast and reliable leak detection for professional use
Durable design suitable for field and workshop environments
Easy-to-use interface with clear LCD display
Multi-gas compatibility increases versatility
Cost-effective alternative to high-end leak detectors
1 × Bosean BH-90E Leak Detector
Flexible probe sensor
USB charging cable
Carrying case
User manual