Portable Flammable Gas Detector with MultiMode Sensing Key benefits Reliable detection of flammable gas using multiple sensor principles to match different field requirements and gas types. Fast response and recovery for timely alerts: T90 response in 20 seconds or less, recovery within 30 seconds. Long runtime and remote sampling: 10000 mAh rechargeable polymer battery with builtin pump and sampling distance greater than 10 meters. Rugged and intrinsically safe design for demanding environments: IP66 rated, dustproof, rain and splash resistant, explosionproof and shockproof. Large ondevice data capacity and clear readout: 3.5inch definition color screen (320 x 240) and storage for 100,000 records. Prevents user errors and keeps measurements accurate: automatic zero tracking, multilevel calibration, and selective or full data recovery that detects and blocks incorrect concentration calibrations. Main functions and performance Detection target: flammable gas (EX). Detection principles supported: electrochemistry, catalytic combustion, infrared, thermal conductivity, PID photoion, and precision infrared. Detection ranges: Catalytic combustion: 0 to 100% LEL Infrared: 0 to 100% LEL Infrared (volume): 0 to 100% Vol precision infrared: 0 to 100% Vol Display: 3.5inch large definition color screen, 320 x 240 resolution. Three display modes are available and historical record graphs can be viewed. Measurement performance: detection accuracy within plus/minus 2 percent full scale, linearity within 2 percent, repeatability within 2 percent, overall uncertainty within plus/minus 2 percent. Response and recovery: T90 less than or equal to 20 seconds, recovery time less than or equal to 30 seconds. Working power supply: DC 3.7 V; builtin 10000 mAh capacity rechargeable polymer battery for extended continuous operation. Working environment: temperature range minus 40 C to plus 70 C; relative humidity up to 99 percent RH. Alarm modes: sound and light alarm, visual alarm, combined sound and light plus visual alarm, close alarm. Data storage and communication: stores up to 100,000 records; USB interface for data transfer. Explosionproof type: intrinsically safe. Protection and durability: IP66 rating, resistant to rain and water splash, dustproof, explosionproof, and shockproof. Sensor life estimates: Electrochemical sensor: 2 to 3 years Catalytic combustion sensor: 3 years Infrared sensor: 5 to 10 years PID photoion sensor: 10,000 hours Units and conversion: selectable units including PPM, mg/m3, Vol%, LEL%, PPHM, ppb, mg/L. Additional features: zero point automatic tracking, multilevel target calibration to improve linearity and accuracy, selectable data recovery options to prevent calibration errors. Physical and accessory details Dimensions: 255 x 210 x 125 mm (L x H x W). Weight: 2.5 kg. Standard accessories included: user manual, certificate, USB charger with data cable, grade aluminum alloy instrument case, 40 cm stainless steel sampling handle with 1 meter hose. Practical application scenarios Confined space entry and inspection: mounted or handheld sampling to detect flammable gas concentrations in tanks, vessels, or utility shafts; long sampling hose and pump allow measurement from safe positions. Industrial routine monitoring and maintenance: use in chemical plants, refineries, and gas processing areas to verify gas concentrations, log events, and support calibration workflows. Emergency response and leak tracing: fast response and clear alarm modes support onsite leak location and quick decision making during incident assessment. Why choose this detector Multiple interchangeable sensing principles and broad detection ranges cover a wide variety of flammable gas monitoring needs. Robust hardware and intrinsic safety enable reliable operation in hazardous and harsh environments. Comprehensive data management and calibration safeguards reduce the risk of misoperation and help maintain measurement integrity over time.