CF1 Series CO2 measurement transducers

New product
More info

The CF1 series is the latest development in quality performance CO2 measurement transducers with integrated humidity and temperature measurement. The unit has the proven Hygromer® IN1 sensor, and an unrivaled performance. Its elegant design fits in perfectly in offices, schools, public buildings, etc. With the Rotronic SW21/HW4 software, altering the scaling is a simple matter, and the measurement transducer can be adjusted and calibrated in the humidity and CO2 ranges.


  • Measures CO2, relative humidity, and temperature
  • Hygromer® IN-1 humidity sensor
  • Adjustable at 35 %RH or 80 %RH
  • Scalable analog voltage or current outputs
  • Single-relay output
  • Small size
  • Compatible with HW4 software
  • Three programmable LEDs
ParametersHumidity / temperature and CO2
DimensionsType R: 131 x 86 x32 (H,W,D) mm
Type S: 120 x 86 x 32 (H,W,D) mm
WeightType R: approx.115 g / Type S: approx.135 g
Range of applicationElectronics: 0 .. 50 °C Measuring range probe dependent 0 .. 100 %RH, non-condensing
Accuracy at 23 ±5 °C<3 % RH (10..90 %RH) / ± 0.3, ± 1 K type S with display
0 .. 2000 ppm: ± 40 ppm ± 3 % of measured value
0 .. 5000 ppm: ± 10 % of measured value
Measurement principleInfrared (NDIR)
Measurement ranges0..2000 ppm or 0..5000 ppm
Adjustment points0, 400 ppm and 35, 80 %RH
Pressure dependency+1.6 % reading per kPa
Power supply / Power consumption12..28 VAC / 15..40 VDC
86.5 mA
Long-term stability< 1.5 %RH per year
Humidity sensorROTRONIC HYGROMER® IN-1
Standard temperature scale0...50 °C or 0...100 °F
Temperature sensorThermistor
Response timeRH: 30s (63 % of a rise 35 .. 80 %RH) without filter / T: 4 s / CO2: <3 min diffusion time
Analog outputs3 analog outputs (1 for each parameter) The mA and V output is not exchangeable. It is always fixed as mA or V. CF132 is the current output, CF135 is the voltage output
Analog output signal (standard)4 .. 20 mA / 0..1 V / 10 V exchangeable via SW21/HW4 software
Enclosure materialABS
IP protection ratingIP30
Load per analog outputV signal: ≥1kΩ / V; mA signal: ≤500 Ω
Load per analog outputV signal: ≥1kΩ / V; mA signal: ≤500 Ω
RelayExchangeable via software for each parameter
max. switching voltage: 30 VDC / 125 VAC
max. switching load: 1A at 30 VDC / 0.5A at 125 VAC
min. switching load: 0.01 mA at 10 mV DC
RoHs conformityYes
CE / EMC conform2014/30/EU / EN61000-6-1 / EN61000-6-2 / EN61000-6-3 / EN61000-6-4

Contact Us

“Industrial Technical Services is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels”.


Please fill details below and one of our representative will contact you shortly. 

30 other products in the same category: