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- The instrument can be equipped with carbon monoxide, hydrogen sulfide, combustible gas and oxygen sensors in order to meet users’ different demands; 
 
- LED display;
 
- Simple and convenient three-wire connection;
 
- The instrument adopts fault-tolerant design in order to avoid damages to the instrument due to wrong wire connections; 
 
- The cast aluminum and stainless steel case is sturdy, durable and corrosion resistant, and the Protection Classification can be up to IP66.
 
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 Part No. 
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 90006000-A1 
 | 
 
| 
 Gas Detected 
 | 
 Combustible gas LEL 
 | 
 
| 
 Sampling Method 
 | 
 Diffusion 
 | 
 
| 
 Gas Sensor 
 | 
 Catalytic 
 | 
 
| 
 Measure Range 
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 0~100%LEL 
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| 
 Resolution 
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 1%LEL 
 | 
 
| 
 Response Time 
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 Less than 30 seconds 
 | 
 
| 
 Power Supply  
 | 
 (15~30)VDC, 80mA 
 | 
 
| 
 Electric Interface 
 | 
 M20 
 | 
 
| 
 Display 
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 4-digit LED display 
 | 
 
| 
 Alarm Method 
 | 
 LED graphic alarms 
 | 
 
| 
 Signal Output 
 | 
 Analog signal: (4~20)mA, load resistance of 500 ohms 
 | 
 
| 
 Wiring Method 
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 Three-wire: power, GND, signal 
 | 
 
| 
 Protection Classification 
 | 
 IP66 
 | 
 
| 
 Environment Temperature 
 | 
 -20℃~50℃ 
 | 
 
| 
 Environment Humidity 
 | 
 15%~95% relative humidity (standard) 
 | 
 
| 
 Explosion-Proof 
 | 
 Ex d IIC T6  
 | 
 
| 
 Size 
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 165mm×120mm×110mm(L×W×H) 
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| 
 Weight 
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 1.6kg  
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 Materials of the cases 
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 Cast aluminum and stainless steel 
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              A combustible gas is one which ignites to burn, deflagrate or detonate when mixed with air and an ignition source.  
Combustion is a fairly simple chemical reaction in which Oxygen is combined rapidly with another substance resulting in the release of energy. This energy appears mainly as heat – sometimes in the form of flames.  
The process of combustion can be represented by the well known  
fire triangle. 
Three factors are always needed to cause combustion: 
1.  A source of ignition 
2.  Oxygen 
3.  Fuel in the form of a gas or vapour 
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