Description
The EE850 is designed for use in building management applications. A multiple point CO2 and temperature factory adjustment procedure leads to excellent CO2 measurement accuracy over the entire temperature working range. The EE850 incorporates a dual wavelength NDIR CO2 sensor, which compensates for ageing effects, is highly insensitive to pollution and offers outstanding long term stability.
Installed into a duct, a small amount of air will flow through the divided probe into the transmitter housing, where the CO2 sensing cell is located, and back into the duct.
The temperature sensor is located inside the probe.
- Measurement principle: dual wavelength non-dispersive infrared technology (NDIR)
- Measuring range: 0 to 2000 / 0 to 5000 / 0 to 10000 ppm
- Accuracy at 25 °C (77 °F) and 1013 mbar (14.7 psi) :
- 0 to 2000 ppm: < ± (50 ppm +2% of measured value)
- 0 to 5000 ppm: < ± (50 ppm +3% of measured value)
- 0 to 10000 ppm: < ± (100 ppm +5% of measured value)
- Response time: T63 < 100 s at 3 m/s (590 ft/min) air speed in the duct
- Calibration interval >5 years
- Sample rate : approx. 15 s
- Temperature Working range: -20 to 60 °C
- Analogue Output: 0 – 5 / 0 – 10 V / 4-20 mA possible
