CO2-M/A Air Quality Transducer for CO2, humidity, temperature in room housing, 0-10 V

Description
Depending on the device version, the multi-sensor measuring device records the measured variables CO2 (0-2000/5000/10000 ppm), air quality VOC (low/med/high), relative humidity (0-100% RH) and temperature (0...+50°C). The transmitter converts the measured values into a standardized, analog output signal 0-10 V. As an option, the measuring device has a backlit display or LED traffic light and potential-free changeover contact. The CO2 concentration is visualized via the LED traffic light (green/yellow/red). The version with a backlit LCD display shows the measured values and min/max values of CO2, VOC, relative humidity and temperature. The switching function of the changeover contact can be defined to one of the measured variables using a DIP switch and the switching threshold can be set using a potentiometer. The CO2 concentration is measured using a non-dispersive infrared sensor (NDIR). There are 3 different CO2 scales 0-2000 ppm, 0-5000 ppm, 0-10000 ppm to choose from. The air quality is measured by a VOC sensor and detects the pollution of the ambient air by volatile organic substances such as breathing air, cigarette smoke, body vapours, material emissions, etc. The device has the setting options "low", "medium" or "high" for VOC sensitivity ". The humidity and temperature are measured by a digital sensor, which guarantees a highly accurate and long-term stable measurement result. 16 scalings are available as temperature output. The humidity output signal can be determined from the four measured variables% r.h., g / m³, g / kg and dew point temperature. The measuring device carries out an automatic calibration for CO2 and VOC at regular intervals, which ensures long-term stable measurement. This can be deactivated if necessary or performed manually on the device at any time. In addition, the measuring device has a heating function for sensor protection in the high humidity range of 95 ... 99% r.h. If the relative humidity exceeds the threshold value set ex-works for a certain period of time the heating function is activated. The sensor is heated for a limited time, thus dried and protected from condensation. During the heating and subsequent temperature compensation phase, the output signal is kept stable at the last measured value before the protective function was activated. The modern room housing has a quick-release fastener, extra-large ventilation slots, thermal decoupling and much more. The multi-sensor measuring device is ideally suited for use in workplaces, schools, living rooms, medical facilities.

Technical data