חיישן Co2   עם יציאה 4-20mA

 Product Overview
The transmitter is widely used in agricultural greenhouses, flower cultivation and other occasions hat require CO2 and temperature and humidity monitoring. The input power supply in the sensor, the sensor probe, and the signal output are completely isolated. It is safe and reliable, beautiful in appearance and easy to install.
2 Features
This product uses a high-sensitivity gas detection probe with stable signal and high accuracy. It has the characteristics of wide measuring range, good linearity, easy to use, easy to install, and long transmission distance.
3 Main Parameters
Power supply: 10~30V DC (0~10V type can only supply 24V)
Power consumption: 0.3W (24VDC)
 - CO2 measurement range: 400~5000ppm
 - CO2 measurement range: 0~2000ppm
CO2 accuracy: ±(40ppm+ 3%F·S) (25℃) Stability: <2%F·S
Non-linearity: <1%F·S Data update time: 2s
System warm-up time: 2min (available), 10min (maximum accuracy)
Average current: <85mA
Temperature influence: self-contained temperature compensation
Output signal: 4~20mA, 0~5V, 0~10V
Working environment: -10~+50℃, 0-80%RH (non-condensing)
Response time: generally less than 90S at 90% step change
Overall size: 110×85×44mm

 Example
The range is 0~5000ppm, 4~20mA output, when the output signal is 12mA, calculate the current CO2 concentration value. The span of this CO2 range is 5000ppm, expressed by a 16mA current signal, 5000ppm/16mA=312.5ppm/mA, that is, the current 1mA represents the CO2 concentration change 321.5ppm, the measured value is 12mA-4mA=8mA, 8mA*312.5ppm/mA=2500ppm , The current CO2 concentration is 2500ppm

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