CL11 Indoor Air Quality Data Logger

CL11 Indoor Air Quality Data Logger 

More details

New product
More info

The CL11 desktop display unit is the latest development of an inexpensive multimeter that simultaneously measures and records CO2, humidity and temperature. Equipped with the ROTRONIC HYGROMER® IN-1 humidity sensor, this instrument offers unbeatable value for money. Using the ROTRONIC software package SW2.x, it can be easily set to record as required and data can then be downloaded, saved and analyzed.


  • Measures and logs CO2, relative humidity and temperature
  • Calculates the dew point
  • Hygromer® IN-1 humidity sensor
  • 40,000 data point memory for CO2, humidity and temperature values
  • Maximum, minimum and average value display
  • Adjustable audible and visual CO2 alarm
  • Display with backlight
  • Optional external temperature probe
  • Includes software for configuration and data download
Dimensions157 x 120 x 45 mm
WeightApprox. 200g
Range of application0…50 °C / 0…100 %RH, non-condensing
Accuracy at 23 ±5 °C±30 ppm ±5 % of the measured value, <2.5 %RH (10...90 %RH), ±0.3 °K
Measuring range0...5'000ppm; 0...100%RH; -20...60°C
Measurement principleNon dispersive infrared (NDIR) with automatic baseline correction (ABC)
Adjustment pointsAutomatic calibration, manual calibration at 400 ppm and 35, 80 %RH
Pressure dependency+1.6 % reading per kPa
Null drift<10 ppm/year
Power supply / Power consumptionVia AC1214 AC adapter (included in the delivery package)
Current consumption50 mA
Measured value memory40,000 values with time stamp, automatic recording (%RH / °C / CO2 / external temperature probe)
Warm-up time<1 min.
Long-term sensor stability< 1.5 %RH per year
Humidity sensorROTRONIC HYGROMER® IN-1
Temperature sensorThermistor
Response time<10 sec @ 30 cc/min. flow, <3 min diffusion time
Response time t 63<30 s, without filter
Parameters shownCO2, relative humidity and temperature
Alarm indicatorsAdjustable for CO2 measurement
Real time clock w.backup batteryYes
SoftwareROTRONIC SW21 free of charge, HW4 subject to charge
IP protection ratingIP30
MaintenanceNo maintenance (standard indoor application)

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: