Series HLX871
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CO2 Probe for OEM / HVAC Applications The offset CO2 sensor HLX871 features a large measurement range up to 10000ppm and the smallest housing dimensions. The digital E2 interface facilitates a simple querying and processing of the measured values and an individual configuration of the sensing head. The measurement is based on infrared technology (NDIR). The patented auto calibration process makes the HLX871 maintenance-free, aging effects are compensated for and an outstanding longterm stability is also ensured. Calibration data and other important functions such as linearisation or temperature compensation are stored in the electronics in the sensor tube. In combination with the integrated flange coupling, a rapid replaceability of the sensing head is possible without the need for readjusting the end device. Moreover, the low current consumption of the HLX871 is unique! The adjustable measurement interval allows the average current consumption to be reduced to less than 60μA. The perfect solution for battery-operated devices. Typical applications Greenhouses Fruit and vegetable storage Stables Data loggers OEM applications maintenance-free through auto-calibration very low current consumption digital interface highest accuracy outstanding long-term stability adjustable measurement interval Technical data Measured values CO2 Measuring principle Sensor Measurement range Accuracy at 25°C and 1013mbar Response time t90 Temperature dependency Long-term stability Measurement interval 1) non-dispersive infrared technology (NDIR) 2 beam infrared cell 0...2000 / 5000 / 10000ppm 0...2000ppm: < ± (50ppm +2% from the measured value) 0...5000ppm: < ± (50ppm +3% from the measured value) 0...10000ppm: < ± (100ppm +5% from the measured value) < 195s type 2ppm CO2/°C (0...50°C) type 20ppm / a adjustable from 15s to 1h Measurement range Interface max. cable length Supply voltage average current consumption Current peak Housing / Protection class Electrical connection Electromagnetic compatibility Operating temperature and conditions Storage temperature and condition Dimensions Weight 4.75 - 7.5V DC 3.7mA at 15sec. measurement interval 58µA at 1h measurement interval max. 500mA for 0.05s Plastic PC / Housing IP65 Connector M12 x 1 EN61326-1 EN61326-2-3 -40...60°C 0...100% rF (non-condensing) -40...60°C 0...100% rF (non-condensing) 96 x Ø18.5mm approx. 40g 1) Factory setting = 15sec. 2) The average current consumption depends on the measurement interval set

M12x1 flanged mounting with 50mm stranded wire Ordering information MEASUREMENT RANGE 0...2000ppm 0...5000ppm 0...10000ppm PTFE filter Order example HLX871-2C95 Measurement range: 0...2000ppm Type: CO2 Output: digital interface Filter: PTFE filter Accessories HLX87x test board mounting flange Digitron Italia S.r.l. Via ASI Consortile, 7 03013 Ferentino (FR) Italia Tel (+39) 0775 392052 Fax (+39) 0775 223835 www.digitron-italia.com e-mail:info@digitron-italia.it