ShenzhenYijiajie Electronic Co., Ltd.
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability | 2200 |
| Delivery Time | 5-8 days |
| Packaging Details | Box pack |
| Gas detection | Methane CH4 |
| Range | 0-1% VOL |
| Accuracy | 0-1% VOL |
| Resolution | 0.01% VOL |
| Response time T90 | ≤ 20 s |
| Preheating time | < 10 s |
| Operating voltage | 3.0–5.5 VDC |
| Operating current | Operating current |
| Brand Name | YJJ |
| Model Number | TLS4 CH4 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram | Supply Ability | 2200 |
| Delivery Time | 5-8 days | Packaging Details | Box pack |
| Gas detection | Methane CH4 | Range | 0-1% VOL |
| Accuracy | 0-1% VOL | Resolution | 0.01% VOL |
| Response time T90 | ≤ 20 s | Preheating time | < 10 s |
| Operating voltage | 3.0–5.5 VDC | Operating current | Operating current |
| Brand Name | YJJ | Model Number | TLS4 CH4 |
| Place of Origin | CHINA | ||
| High Light | TDLAS methane sensor for petrochemical ，laser gas sensor 0-1% VOL ，YJJ TLS4 CH4 methane detector | ||
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:
| Maximum overrun range: | 0-10000ppm |
| Signal output: | 0.1 0.02mA |
| Response time (T90) | < 15s |
| Load resistance | 100 Ω |
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2006
Total Annual:
900000-1000000
Employee Number:
50~80
Ecer Certification：
Verified Supplier
Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph... Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph...
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