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Temperature and humidity data logger LOG20 31.1052


  • Made in Germany
  • For monitoring temperature and humidity
  • Memory for 20.000 measured values
  • MAX/MIN/AVG function
  • UBS interface - Windows software optional
  • With ISO certificate; reference points: 23°C, 50% rH

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Product specification

The LOG20 allows you to accurately monitor and record temperature and humidity levels. This allows you to record important climate data over longer periods of time, whether during transport of delicate products, in cold stores, server rooms or for prescribed test protocols. The cause of damp or mould damage in living spaces can also be determined on the basis of recorded climate values.
The logger can record up to 20,000 measured values for 2 measured quantities, the storage interval is freely adjustable from 30 seconds to 24 hours. Via a USB interface, the logger can also be read out and programmed to your PC. The required "DE-GRAPH" software and the USB cable for this are available separately (Item No. 31.1041) or as a set with the logger (Item No. 31.1053).
The device has a maximum and lowest value as well as an AVG function.
If certain limit values are go over or under the range set, you will be informed with a visual alarm.
The device is entirely made in Germany.


  • Large Display, easy handling
  • MAX/MIN/AVG function
  • Visual HI/LO/Alarm
  • Memory for 20.000 measured values at 2 Parameters
  • Configurable logging interval from 30 seconds to 24 hours
  • USB Interface
  • Temperature: accuracy: ±0.5°C at -20…+50°C, otherwise ±0.7°C
  • Humidity: resolution 0.1 % rF, accuracy ±3 % rH
  • Made in Germany

TFA Quality mark:

  • With certificate
  • Made in Germany
  • EN 12830 conform

Product information for download:

Technical data

Delivery contents Data logger, ISO certificate, battery, instruction manual
Measuring range humidity 0...99%
Measuring range temperature -30...+60°C (-22...+140°F)
Material Plastic
Power consumption Battery
Assembling Free-standing or with holder
Batteries included yes
Batteries 1 x CR2032
Dimensions (L) 60 x (B) 21 x (H) 89 mm
Weight 57 g

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