Datasheet CDS201

v1.1 / Modification rights reserved | 5

Technical Data

Measurands

Relative Humidity (RH)

Measuring range

0...100 %RH, non-condensing

Accuracy1)

incl. hysteresis, non-linearity and repeatability

0...80 %RH

>80...100 %RH

±(2.8 + 0.003 * mv) %RH

mv = measured value

±4.1 %RH

Temperature dependency of electronics, typ.

0.008 % RH / °C (0.004 %RH / °F)

Factory calibration uncertainty2)

@ 23 °C (73 °F)

0...90 %RH

90...100 %RH

±(0.7 + 0.003 * mv) %RH

mv = measured value

±1 %RH

1) Defined against E+E calibration reference at 23 °C (73 °F). With supply voltage 24 V DC, 0.2 m/s (39. 4 ft/min) medium flow and load resistor 250 Ω for

version with current output.

2) Defined with an enhancement factor k=2, corresponding to a confidence level of 95 %.

CO2

Measurement principle

Dual wavelength non-dispersive infrared technology (NDIR)

Measuring range

0...2 000 / 5 000 ppm

Accuracy1)

0...2 000 ppm

0...5 000 ppm

< ±(60 ppm +2 % of measured value)

< ±(60 ppm +3 % of measured value)

Temperature dependency, typ.

±(1 + CO2 concentration [ppm] / 1 000) ppm/°C

±(1 + CO2 concentration [ppm] / 1 800) ppm/°F

Residual pressure dependency

in the range of -20...45 °C (-4...113 °F),

related to 1 013 mbar

0.14 % of measured value/mbar

Long-term stability

under normal operating conditions in a typical

building automation environment

<20 ppm / year

Response time t63, typ.

<180 s

1) @ 20 °C (68 °F), with supply voltage 24 V DC, 0.2 m/s (39.4 ft/min) circulation and load resistor 250 Ω for version with current output.

Temperature (T)

Measuring range

-30...+60 °C (-22...+140 °F)

Accuracy1)

0- 10 V, RS485

4 - 20 mA

±0.35 °C (±0.63 °F)

±0.7 °C (±1.26 °F)

Temperature dependency of electronics, typ.

0.006 K/K

Factory calibration uncertainty2)

@ 23 °C (73 °F)

±0.1 °C (±0.18 °F)

1) Defined @ 23 °C (73 °F) against E+E calibration reference. With supply voltage 24 V DC, 0.2 m/s (39. 4 ft/min) medium flow and load resistor 250 Ω for

version with current output.

2) Defined with an enhancement factor k=2, corresponding to a confidence level of 95 %.

Calculated Physical Quantity

from

up to

unit

Dew point temperature

Td

-30

(-22)

60

(140)

°C (°F)