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รายละเอียดสินค้า:
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| พิสัย: | 0-100% LEL | โอเวอร์โหลดสูงสุด: | แอลอีแอล 100% |
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| เวลาตอบสนอง t90: | <30 วินาที | ปณิธาน: | LEL 1% |
| ความเป็นเชิงเส้น: | ≤ ±5%เอฟเอส | แรงดันไฟฟ้าที่ใช้งาน: | 3.00±0.02 VDC (ทั่วไป 3.0V) |
| การดำเนินงานในปัจจุบัน: | 95±15 มิลลิแอมป์ | อุณหภูมิในการทำงาน: | -30℃- +50℃ |
| เน้น: | flammable gas LEL sensor,catalytic combustion gas sensor,YJJ 4LEL-3.0V gas sensor |
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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 |
ผู้ติดต่อ: Miss. Xu
โทร: 86+13352990255
Thai
