The digital CO2 probe EE871 covers a wide measuring range up
to 10000ppm. The probe has a diameter of only 18.5 mm and a protection class of IP65. These features make the CO2
probe EE871 an ideal solution for handheld devices, data loggers or demanding HVAC applications. The communication protocol
to the sensor is with the E+E E2 protocol which is similar to I2C.
The digital interface of the CO2 sensor allows for easy retrieval and processing of measurement values and a
unique configuration and adaptation to the application. Through the adjustable measuring interval, the average power consumption
can be reduced to less than 60µA, which makes the CO2 probe EE871 also the perfect solution for battery-powered devices.
The measuring principle of the CO2 probe EE871 is based on infrared technology (NDIR). The patented E + E auto-calibration
does not require a regular supply of fresh air which makes the CO2 probe maintenance free. Aging effects are compensated
by the auto-calibration easily. Against contamination the CO2 sensor is protected with a replaceable PTFE filter.
Excellent long term stability is guaranteed.