This is the SCD4X produced and developed by SENSIRION, a next-generation of a Carbon Dioxide (CO2) Sensor . This sensor is based on photoacoustic NDIR ( Nondispersive Infrared ) sensing principle that offers high accuracy. In other words, this sensor
This is the SFM3000 a Mass Flow Meter develop by SENSIRION. This can measure a bidirectional flow of air and other non-aggressive gases at rate up to 200slm superb accuracy and extremely high speed output at 14 bit/ 2kHz rate.
This the Telaire T6713 / T67XX a Carbon Dioxide CO2 sensor for indoor air quality, energy saving application, control of ventilation, environmental purpose, farming, and clinical instrumentation. The T67XX is already factory calibrated sensor than can measure the concentration level