CO2 sensor detection transmitter 4-20mA/RS485 for Gas Environmental Monitoring

NBL-W-CO2 carbon dioxide sensor adopts imported sensor chip, which is used to detect the concentration of CO2 in various environments, and has the characteristics of high precision and good stability. 

The signal transmitter adopts advanced integrated circuit modules, which can output voltage, current and other signals according to the different needs of users. The instrument is small in size, easy to install, and reliable in performance; it adopts proprietary line, which has good linearity, strong load capacity, long transmission distance and strong anti-interference ability. This product can be widely used in the detection of carbon dioxide concentration in office buildings, public places, greenhouses, production plants and other places.

technical parameter：                     

Range: 0～5000ppm

Accuracy: ±(50ppm+3% reading)

Resolution: 1ppm

Power supply mode: 

□ DC 12V-24V

□ Other

Output form: 

□ Current: 4～20mA

□ RS485

□ Other

Instrument cable length: 

□ Standard: 2.5 meters

□Other

Load resistance: Current type: RL≤250Ω

Working temperature: -10℃～50℃

Relative humidity: 0～100%

Product weight: 140g

Product power consumption: 0.2W

Calculation formula：

Current type (4～20mA output):

C=(I-4)/16 × 5000

(C is the measured carbon dioxide concentration value (ppm), I is the output current (mA))

Carbon dioxide sensors are widely used in many fields such as industry, agriculture, environmental protection, and aerospace.

Vegetables need carbon dioxide concentration generally 1000~1500ppm, therefore, carbon dioxide deficit in plastic greenhouses is quite serious, which becomes an important factor affecting the yield of vegetables in plastic greenhouses.

Installing CO2 sensors in plastic greenhouses can ensure timely alarms in case of CO2 deficit concentration, so that gas fertilizer can be used. Ensure early release and high quality and yield of vegetables, edible mushrooms, flowers, Chinese herbs, etc .