YJJ TLS4 CH4 0–1% VOL Laser Methane Sensor Based on TDLAS Principle for Petrochemical Industry

Product Description:

YJJ TLS4 CH4 0–1% VOL Laser Methane Sensor Based on TDLAS Principle for Petrochemical Industry

Features:

Model: TLS4 CH4 (MST / Weisheng / Huai'an, 4-series standard package)

Type: TDLAS tunable laser absorption spectroscopy, high precision, long lifespan, no calibration required methane sensor.

I. Core Parameters (25℃, standard conditions)

Detected gas: Methane CH4 (1653.7nm laser)

Range: 0–1% VOL (10,000 ppm), 0–5% VOL, 0–100% VOL (optional)

Accuracy: 0–1% VOL: ±0.03% VOL; 1%–100% VOL: ±5% of true value

Resolution: 0.01% VOL

Response time T90: ≤ 20 s

Preheating time: < 10 s

Operating voltage: 3.0–5.5 VDC (typical 3.3V/5V)

Operating current: < 100 mA (average)

Output signal: TTL serial port (3.3V) + analog output 0.4–2V dual output

Operating temperature: -5℃ ~ +55℃ (custom - 40℃ ~ +70℃)

Humidity: 0%–95%RH (no condensation)

Protection level: IP65 (304 stainless steel housing)

Life: > 5 years (in air, without calibration)

Interference resistance: Responds only to methane, unaffected by CO, H2S, water vapor, dust

II. Key Features (Compared with catalytic / NDIR)

Unique selectivity: No cross-sensitivity, stable in complex environments (chemical / kitchen)

Long lifespan: 5 years +, 2–3 times longer than catalytic sensors (1–2 years)

No calibration required: Factory calibration, long-term drift < 1%/ year, low maintenance cost

Intrinsically safe: Laser principle, no risk of catalytic combustion, preferred for explosion-proof scenarios

Standard packaging: 4-pin size (φ20×16mm), direct replacement for catalytic / NDIR sensors

III. Typical Applications (High-precision methane detection)

Gas safety (domestic / commercial)

Kitchen / hotel: Methane (gas) leakage warning, explosion prevention

Municipal pipelines: Underground pipe galleries / valve wells 0–100% LEL leakage monitoring

Boiler rooms / gas equipment: Ignition failure leakage alarm

Petrochemicals

Drilling platforms / gathering stations: Methane leakage detection (explosion-proof area)

Refining and chemical plants: Process pipelines / storage tanks **High concentration CH4 (0–100% VOL)** monitoring

Wastewater treatment: Methane (CH4/CO2) concentration monitoring

Energy / power

Coalbed methane / shale gas: 0–100% VOL methane concentration analysis

Biogas generation: CH4 online monitoring in gas storage tanks / gas pipelines

Battery rooms: Prevent methane accumulation explosion

Industrial explosion-proof equipment

Replacement for catalytic sensors: For MSA, Hon, etc. portable / fixed detection instruments

Coal mines / mines: Underground methane (gas) detection (intrinsic safety type)

Specifications: