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Measurement ranges:
+ CO2: 400–2000 ppm
+ Temperature: 0...50 °C
Accuracy:
+ CO2: ±40 ppm + 3 % of reading, typical; DC model: 75 ppm or 10 % of reading (whichever is greater)
+ Temperature: <0.5 °C
+ Total error band includes accuracy, hysteresis and temperature effect over 5...50 °C and 10–90 % rH
Measurement elements: Temperature sensor: Pt1000 / Integrated (models with rH-measurement), Non Dispersive Infrared (NDIR) CO2 sensor, thermoset polymer capacitive sensing element for humidity
Measuring units: ppm, °C, % rH
Calibration: Automatic self-calibration, ABC LogicTM or continuous comparison (DC)
Supply voltage: 24 VDC/VAC ±10 %
Output signal 1: 0/2…10 V or 4…20 mA (linear to CO2) (2–10 V output: display required)
Optional output signal 2: 0/2…10 V or 4…20 mA (linear to rH) (2–10 V output: display required)
Output signal 3: 0/2…10 V or 4…20 mA (linear to Temp) (2–10 V output: display required)
Optional relay output: Potential free SPDT 250 VAC, 6 A / 30 VDC, 6 A with adjustable switching point and hysteresis
Operating temperature: 0...50°C
Protection standard: IP20
With display & relay
