Product Introduction
DefinitionHandheld explosion-proof battery-powered detector that detects real-time concentrations of combustible, toxic, oxygen,VOC and other gas concentrations; exceeding limits triggersSound and light + Vibration alarmused for on-site inspection, hot work, and confined space operations for personnel protection, and is a mandatory safety detection device.
Sampling methodSKA/NE-501
- Diffusion typeGas naturally flows into the sensor; small size, good battery life, worn on the waist for carry-on use;Not suitable for pre-detection in closed spaces such as tanks, wells, and pipelines。
- Pump suction typeBuilt-in air pump, hose + Probe for long-distance air sampling;First choice for confined spacespersonnel sample in advance from outside, higher safety.
Product Categories
- Single gas detectorSingle sensor, measures only 1 types of gases (H₂S、CO、O₂、NH₃、Cl₂), low cost.
- Composite multi-gas detector
- Four-in-one (market mainstream)：LEL Combustible,O₂Oxygen,CO Carbon monoxide,H₂S Hydrogen sulfide, standard for municipal sewage, chemical, and confined spaces.
- Five / Six-in-one: addsSO₂、NO、NO₂、PID (VOC)、CO₂and other sensors, customized combinations on demand.
- Special model：PID Detector (VOC / Benzene series),NDIR Infrared (CO₂and methane, anti-poisoning), phosphine, phosgene dedicated detectors.
Sensor principle
- Electrochemical：O₂、CO、H₂S、SO₂、NH₃、Cl₂；ppm grade, lifespan1–3 years, cross-interference exists.
- Catalytic combustion：LEL Combustible gas; measures lower explosive limit, easily poisoned and disabled by silicon and sulfur substances.
- NDIR Infrared：CO₂and methane; long lifespan, anti-poisoning,Cannot detect hydrogen。
- PID 光离子：VOCand benzene;ppb High sensitivity, UV lamp will attenuate.
National standard alarm thresholds (commonly used)
- O₂Oxygen: low alarm19.5% VOL, high alarm23.5% VOL
- H₂S Hydrogen sulfide: low alarm10ppm, high alarm20ppm
- CO Carbon monoxide: low alarm25ppm, high alarm50ppm
- LEL Combustible gas: low alarm10% LEL, high alarm25% LEL
also supports TWA time-weighted average, STEL short-term exposure limit alarm (occupational hygiene)
Key indicators & Certification
- Explosion-proof:Ex Intrinsically safe type (essential for industrial hazardous areas,GB3836）
- Protection:IP65/IP67 Waterproof and dustproof
- Response time T90: diffusion≤30s, pump suction≤45s
- Functions: data storage, Bluetooth upload, backlight display, fall alarm (high-end models)
- Verification: based on JJG，6–12 Calibrate once every month
Applicable industries
Petrochemical, gas, municipal sewage, mining, firefighting, metallurgy, coating, pharmaceuticals, power, ship cabins, storage tanks, underground maintenance.
Key points for use and maintenance
- Before use: check appearance, ensure inlet is not blocked, power-on self-test of sound, light and vibration, confirm battery level.
- Confined space operations:Pump suction performs multi-point detection from top to bottomconfirm safety before entering.
- Maintenance: regular zero calibration + Standard gas calibration; sensors must be replaced when expired.
Taboos:Do not disassemble or charge in explosive environments; keep away from high-concentration silicone and strongly corrosive gases to prevent sensor
Main Application Areas
- Confined Space Entry — Pre-entry gas testing in tanks, wells, and pipelines to ensure safe working conditions.
- Hot Work Permit — Monitoring flammable vapors during welding, cutting, and other hot work operations.
- Industrial Inspection — Routine safety checks in chemical plants, refineries, and manufacturing facilities.
- Emergency Response — Rapid detection of toxic or combustible gas leaks during incident response.
- Environmental Monitoring — Ambient air quality assessment for ethanol and other VOC emissions.
Keywords：portable ethanol detector, C2H5OH gas detector, ethanol gas monitor, portable gas detector, industrial gas detector, ethanol vapor detector, handheld gas detector, gas leak detector
