ShenzhenYijiajie Electronic Co., Ltd.
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability | 2200 |
| Delivery Time | 5 days |
| Packaging Details | Canned |
| Range | 0-100% LEL |
| Maximum Overload | 100% LEL |
| Response Time T90 | < 30 seconds |
| Resolution | 1% LEL |
| Linearity | ≤ ±5%FS |
| Operating Voltage | 3.00±0.02 VDC (typical 3.0V) |
| Operating Current | 95±15 mA |
| Operating Temperature | -30℃- +50℃ |
| Brand Name | YJJ |
| Model Number | 4LEL-3.0V 090-R000-000 |
| 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 days | Packaging Details | Canned |
| Range | 0-100% LEL | Maximum Overload | 100% LEL |
| Response Time T90 | < 30 seconds | Resolution | 1% LEL |
| Linearity | ≤ ±5%FS | Operating Voltage | 3.00±0.02 VDC (typical 3.0V) |
| Operating Current | 95±15 mA | Operating Temperature | -30℃- +50℃ |
| Brand Name | YJJ | Model Number | 4LEL-3.0V 090-R000-000 |
| Place of Origin | CHINA | ||
| High Light | flammable gas LEL sensor ，catalytic combustion gas sensor ，YJJ 4LEL-3.0V gas sensor | ||
Product Description:
YJJ 4LEL-3.0V 090-R000-000 Catalytic Combustion Flammable Gas LEL Sensor
Features:
I. Core Parameters (Quick Overview)
Range: 0–100% LEL (Lower Explosive Limit)
Maximum Overload: 100% LEL
Sensitivity (20℃, CH₄): 22±7 mV/%CH₄
Response Time T90: < 30 seconds
Resolution: 1% LEL
Linearity: ≤ ±5%FS
Operating Voltage: 3.00±0.02 VDC (typical 3.0V)
Operating Current: 95±15 mA
Operating Temperature: −30℃ ~ +50℃
Humidity: ≤ 98% RH (25℃, no condensation)
Pressure: 86–116 kPa
Life Span: > 2 years in air; 12 months in storage
Anti-Toxicity: Non-toxic (H₂S ≤ 6ppm)
Shell: 316L Stainless Steel, Φ24.2×26.8mm
Interface: 4-pin (compatible with 4R + LEL position)
Warranty: 18 months
II. Parameter Meanings (Why This Configuration)
0–100% LEL: Covers from 0 (safe) to 100% (explosive danger), with 20% LEL (low alarm) and 50% LEL (high alarm) as the common alarm levels.
3.0V/95mA: Standard 4 series power supply, directly replacing - C03-0801-000 (Whittle LEL), no need to modify the circuit.
−30 to +50℃: Suitable for wide temperature scenarios such as outdoors, boiler rooms, and underground mines.
Catalytic Combustion Principle: Sensitive to most combustible gases, with good linearity and low cost; however, it will be inaccurate in low oxygen (< 8% O₂) conditions and will be poisoned and fail at high concentrations of H₂S.
III. Main Applications (Industry Scenarios)
1) Industrial Safety (Core)
Gas / Petrochemical: Monitoring of combustible gas leakage in natural gas pipelines, LNG stations, refineries, heating furnaces / torches.
Coal Mines / Underground: Methane (methane) detection to prevent methane explosions.
Metallurgy / Coking: Leakage alarm for coke oven gas, blast furnace gas.
Enclosed Spaces: Before entering ships, storage tanks, sewers, reaction vessels, etc., detect the presence of combustible gases.
2) Commercial and Daily Life
Commercial Kitchens / Hotels: Gas (natural gas / liquefied gas) leakage alarm.
Boiler Rooms / Gas Meter Rooms: Monitoring of gas equipment leakage.
Underground Pipe Lanes / Cable Tunnels: Early warning of gas accumulation.
Specifications:
| Overload | 0~4% LEL |
| Response time | 25 s |
| Size | 20 x 16.5 |
| Sulfur dioxide detection range | 0-50ppm |
| Sensitivity | 450-750 na/PPM |
| Response time | T90 < 30 seconds |
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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