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Shandong Snow Electronics Co., Ltd
Snow natural gas leak alarm
NegotiableUpdate on 05/06
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Overview
Snow Natural Gas Leakage Alarm: Combustible Gas Detector Natural gas leakage alarm can be widely used in industries such as petroleum, chemical, metallurgical, gas transmission and distribution, coal mining, fire protection, power, refrigeration, environmental protection, and service industries. It is also used in environments for gas production, transportation, storage, filling, and use, and is an ideal monitoring instrument to ensure property and personal safety.
Product Details
Snow natural gas leak alarmworking principle
The detector is mainly composed of sensors, integrated circuits, operational amplification circuits, analog voltage to standard current conversion, etc. The sensor converts the gas concentration into an analog electrical signal, which is then converted into a 4-20mA standard signal or RS485 signal and switch signal output through an integrated operational amplifier circuit and simulated voltage, and uploaded to the gas alarm controller or DCS system.
Snow natural gas leak alarmMain technical indicators
1. Detection principle: catalytic combustion type, electrochemical type
2. Gas detection, measurement range, alarm points: see label
3. Indication error: ± 5% F · S
4. Response time: less than 30 seconds
5. Power supply: DC24V
6. Power consumption: 1.2W
7. Environment: Combustible gas temperature: -40 ℃ -70 ℃ Toxic gas -20-50 ℃ Humidity: ≤ 95% RH
8. Atmospheric pressure: 86KPa -106KPa
9. Insulation resistance: ≥ 100M Ω in normal environment
When the humidity is 94% RH, ≥ 1M Ω
10. Working mode: continuous
11. Explosion proof method: Explosion proof type
12. Sampling method: diffusion
13. Explosion proof grade: ExdIICT6
14. Sensor lifespan: 3 years for catalytic combustion and 2 years for electrochemical combustion
15. Signal output: 4-20mA or switch quantity
16. Three wire system (split line) transmission distance:
Transmission distance<300m (three core shielded wire diameter ≥ 0.5mm2)
Transmission distance ≥ 300m (three core shielded wire diameter ≥ 1.5mm2)<1000m
17. The transmission distance of RS485 bus shall not exceed 1200 meters (two core shielded twisted pair cable, wire diameter ≥ 0.75mm2)
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