SO2 Gas Transmitter, RS485 Output Signal
The series of 485 main line gas detection alarm system adopts non-standard agreement or MOdBUS protocol for data collection and transmission. This fixed so2 gas detector alarm can detect gas concentraion in the spot and transfer gas signal to a control panel,when gas concentration exceed a preset alarm level,the panel will make alarm. It is with relay output to connected with an alarm light or fans,valves.
|Product name||fixed so2 gas detector|
|Size||144 mm * 190 mm * 74 mm|
|Sensor types||etectrochemistry type|
|Working pattern||continuous work|
|Output signal||485 digital signal|
|Output||four wire (two power cord, two signal lines)|
|Temperature range||- 20 ℃ ~ 50 ℃|
|Humidity||15% ~ 90% RH (No condensation)|
|Explosion-proof||Exd II CT6|
|Connection mode||four wire connection mode|
|Transmission cables||a four core shielded cable|
|Transmission distance||＜ 1000 m|
So2 gas detector alarm Product Features:
1 ) Imported sensors,has a good sensitivity and repeatability;
2 ) Simple menu operation,complete functions and high reliability;
3 ) Uses the bus wire system, having strong anti-jamming capability, convenient layout;
4 ) Provides an controlling external device (exhaust fan, solenoid valve, etc.) of the switch output;
5 ) Detects gas concentration with natural diffusion mode;
6 ) Adopts aluminum shell material with high strength, heat resistance and corrosion resistance.
Detect gas paramteres:
What's the differences among 2/3/4 wires connection?
In a 2 wire transmitter, one wire is the power source (+) and other one is the return Power (-) + Signal (mA).
In a 3 wire transmitter, two wires are used as a power supply (+) and (-) and the third one is used as Signal (mA).
In a 4 wire traansmitter, two wires are used for power supply and the other two wires are used for Signal (mA).