COMET Logger U3120 - Compact thermometer - hygrometer

Model: CO_U3120
Manufactured by: COMET System
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U3120 - Compact thermometer - hygrometer
This model is designed to measure temperature, relative humidity and dew-point temperature by internal sensor, no additional probes or sensors can be connected. It is characterized by a simple and compact design and a relatively long response to a temperature and humidity jump, compare to model with external probes. The sensors are located under the grid on the front of the unit and are protected with Teflon foil. Foil permits water vapour but prevents water from permeating the liquid state. The device is suitable for measuring in places where there is no rapid change in temperature or relative humidity, and there is no condensation of water vapours. If water vapour condensation occurs inside the datalogger, then the resulting water will remain there and may damage its electronics. The device is placed directly in the measured space. The battery in the device cannot be charged. It is recommended to calibrate this device in the laboratory with the unscrewed bottom lid of the box to allow the air to flow from the back of the electronics. When air flow in the range of 0.5 - 1 m/s perform reading after about 4 hours. The closed device reaches a difference of approximately 2 %RH when inserted in the humidity chamber, then dramatically slows down. Precise reading takes many times longer time than with the open rear lid.
Technical data
  • Measured value Temperature, Relative humidity, Counted values (dew point…)
  • Measuring range -20 to +60 °C
  • Accuracy ±0.4 °C
  • Resolution 0.1 °C
  • Measuring range 0 to 100 % RH
  • Accuracy ± 1.8 % RH
  • Resolution 0.1% RH
  • Measuring range -90 to +60 °C
  • Accuracy ±1.5 °C at ambient temperature T <25 °C and RH >30 %
  • Resolution 0.1 °C
  • Operating temperature -20 to +60 °C
  • Channels internal temperature and humidity sensor
  • Memory 500,000 values in noncyclic logging mode; 350,000 values in cyclic record mode
  • Recording interval adjustable from 1 s to 24 h
  • Display and alarm refresh adjustable 1 s, 10 s, 1 min
  • Recording mode noncyclic - data logging stops after filling the memory
  • cyclic - after filling memory oldest data is overwritten by new
  • Real time clock year, leap year, month, day, hour, minute, second
  • Power Lithium battery 3.6 V; size AA
  • Protection class IP67
  • Dimensions 61 x 93 x 32 mm
  • Weight (including batteries) approx. 120 g
  • Warranty 3 years

Temperature data logger COMET Uxxxx – Catalog Temperature data logger COMET Uxxxx – User‘s Guide

This product was added to our catalog on Thursday 06 December, 2018.
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