RS485 4 to20 ma gas detector co sensor 0-10v carbon monoxide sensor
Product Description
Our Carbon monoxide detector uses electrochemical technology to measure CO concentration, and the reaction is rapid and sensitive. The transmitter is widely used in air quality testing, smart home and other occasions where CO detection is required. Analog signal output, 4-20mA, 0-10V, 0-5V optional. The equipment is 10-30V wide-voltage power supply, and the enclosure has a high degree of protection, which can adapt to various harsh conditions on site.
RS485 OUTPUT
ANALOG OUTPUT
Power supply
10-30VDC
Power supply
10-30VDC
Power consumption
0.18W
Power consumption
0.18W
Measure range
0~2000ppm
Measure range
0~1000ppm
Accuracy
±10%FS
Accuracy
±10%FS
Operating temperature
-20℃~+50℃
Operating temperature
-20℃~+50℃
Operating humidity
15%RH~90%RH
Operating humidity
15%RH~90%RH
Data update time
2s
Data update time
2s
Stability
＜10%
Stability
＜10%
Resolution
0.1ppm
Resolution
0.5ppm
Output signal
RS485
Output signal
4~20mA/0~5V/0~10V
Details Images
■The high-sensitivity gas detection probe has stable signal and can accurately measure the PPM CO concentration with high accuracy.
■Wide measuring range, default 0-1000ppm.
■4-20mA, 0-10V, 0-5V multiple analog signal outputs are available.
■The product adopts a wall-mounted waterproof shell, which is easy to install and has a high degree of protection.
Electrical Wiring
Line color
Description
power
brown
Power supply(10 ~ 30V DC)
black
Power supply negative
Communication
yellow
485-A
blue
485-B
Range 10V-30V of wide voltage is available in power input, the A wire and B wire can not be connected contrary when connecting to 485 signal, and the address among several devices on the total wire can not be conflicted.
Line color
Description
power
brown
Power supply (10~30V DC)
black
Negative power supply
output
blue
Positive CO signal
green
CO signal negative
NOTE: Two types wire methods
1.Four-wire connection diagram
2.Three-wire connection diagram
Calculation Method
Analog Calculation method
1.Current output signal conversion calculation
For example, the range is 0~1000ppm, 4~20mA output, when the output signal is 12mA, the current CO concentration value is calculated. The CO range span is 1000ppm and is expressed by a 16mA current signal.
1000ppm/16mA=62.5ppm/mA, that is, the current 1mA represents a CO concentration change of 62.5ppm, and the measured value is 12mA-4mA=8mA, 8mA*62.5ppm/mA=500ppm. The current CO concentration is 500 ppm.
- Voltage type output signal conversion calculation
For example, the range is 0~1000ppm, 0-10V output, when the output signal is 5V, the current CO concentration value is calculated. The span of this CO range is 1000ppm, expressed by a 10V voltage signal, 1000ppm/10V=100ppm/V, that is, the voltage 1V represents a change in CO concentration of 100ppm, the measured value is 5V-0V=5V, 5V*100ppm/V=500ppm
