Bosean Multi 4 in 1 Gas Detector O2 H2S LEL CO gas detector Multi Gas Meter BH-4A

Gas Customization and Bulk Purchase, Please contact: ada@bosean.com Features： Sensor: High quality electrochemical sensors. Oxygen (O2), Carbon Monoxide (CO), Hydrogen Sulfide (H2S) and Combustibles (LEL). Comes FACTORY CALIBRATED. Turn ON and GO. Detect: Detection error better than ≤±5% F.S. and response time: T<30s. Zero and span calibration options. Alarms: Adjustable audio, visual, and vibration alarms alert when preset levels are reached. Alarm digital time stamp and logging. Strong: Robust design made of high strength ABS and Anti-slip grip rubber. Waterproof, dust-proof and explosion-proof exceeding Explosion-proof grade：Exib IIb T3 GB Specification： Gas type: Oxygen/carbon monoxide/hydrothion/combustible gas( O2/CO/H2S/LEL) Gas measurement range: O2: 0~30%vol, CO: 0~999umo/mol(ppm), H2S:0~100 umo/mol(ppm), EX (combustible ):0~100%LEL Resolution:0.1%vol/1umo/mol(ppm)/1% LELLow/High alarm/Alarm setting: Yes 3 Alarm methods : Sound Alarm, Light flashing,