C06-0800-000

CRIR E1 Commercial Carbon Dioxide (CO2) Sensor, 400 ppm to 2000 ppm, up to 5000 ppm Extended Range DESCRIPTION VALUE TO CUSTOMERS The CRIR E1 Commercial Carbon Dioxide (CO 2) sensor is a single channel, • Small size non-dispersive infrared (NDIR) sensor. • Maintenance free for normal indoor applications Within the CRIR E1 is a sensing chamber • Enhanced long term stability with an infrared source at one end and • Higher accuracy: ±50 ppm ±5% of a detector fitted with an optical filter reading at the other end. The source emits • Consistency and repeatability radiation at wavelengths which include • Easy integration the absorption band of CO 2 . The filter FEATURES blocks wavelengths which are not POTENTIAL APPLICATIONS sensitive to the presence of CO 2 , thereby • HVAC, demand controlled ventilation increasing selectivity and sensitivity. • Indoor air quality (IAQ) measurement • Automatic Baseline Correction As the light passes through the sensing • Air purification systems • Temperature compensation chamber, a fraction is absorbed if CO 2 • Smart /IoT (Internet of Things) systems • UART digital interface is present. The difference between the light emitted by the source and received by the detector can then be converted to a CO 2 concentration reading. The Automatic Baseline Correction (ABC) function can automatically calibrate the sensor’s lowest reading over a pre-configured interval to 400 ppm CO 2 . This enhances long term stability and may eliminate the need for calibration. • Single channel, non-dispersive infrared technology COMMERCIAL CARBON DIOXIDE SENSOR, 400 PPM TO 2000 PPM CRIR E1 TABLE 1. SPECIFICATIONS CHARACTERISTIC PARAMETER Target gas carbon dioxide (CO2) Operating principle non-dispersive infrared (NDIR) Standard range 400 ppm to 2000 ppm, up to 5000 ppm extended range 1, 2 Measurement interval 4s Accuracy ±50 ppm ±5% of reading Typical response time (T90) 97% Operating voltage 4.5 V to 5.5 V unprotected against surges and reverse connection Power consumption 300 mA peak, 30 mA average Alarm output, open collector 1000 ppm/800 ppm normal state is conducting max 100 mA. Transistor open at CO2 high or at sensor failure (see Figure 1). Serial communication5 UART, Modbus protocol Operating temperature range 0°C to 50°C Storage temperature range -40°C to 70°C Operating humidity 0 %RH to 90 %RH non-condensed Expected operating life 10 years Maintenance maintenance-free for normal indoor applications 3 6 Weight