HOBO Pro v2 U23 Temperature & RH Dataloggers

The Pro family data loggers are designed for years of reliable use in harsh outdoor or condensing environments.

The Temp/RH sensor provides fast response and superior durability in humid conditions, with small-diameter external sensors available for installation in tight spaces or building ducts.


Features

  • Weatherproof housing for use in outdoor or condensing environments
  • High accuracy temperature and RH sensors
  • Replaceable RH sensor (RH sensor models only) provides fast response and superior recovery from condensing conditions
  • Small-diameter external sensor versions for measurements in tight spaces
  • Optic USB interface for fast and reliable download


Models Available

  • U23-001 Internal Temperature & RH
  • U23-002 External Temperature & RH
  • U23-003 2 x External Temperature Sensors
  • U23-004 1 x Internal Temperature & 1 x External Temperature


General Specifications

  • Memory: 42,000 measurements
  • Sampling Rate: 1 second to 18 hours Fixed rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations.
  • Time accuracy: 1 minute/month at 25 °C
  • Battery life: 3 years (typical); user-replaceable 1/2 AA 3.6 Volt lithium battery
  • Dimensions: Housing measures 10.2 x 3.8 cm


Sensor Specifications

 

Internal Temperature

  • Measurement range: -40 to 70°C
  • Accuracy: ±0.2 °C over 0 to 50°C
  • Resolution (12-bit): 0.02°C at 25°C
  • Response time: 40 minutes (to 90% in airflow of 1 m/sec)
  • Use with RS1 radiation screen for outdoor installations (see below)

 

External Temperature

  • Measurement range: U23-002: -40 to 70°C; U23-003 & -004: -40 to 100°C; sensor tip and cable immersion in fresh water up to 50°C for one year
  • Accuracy: ±0.2°C over 0 to 50°C
  • Resolution (12-bit): 0.02°C at 25°C
  • Response time: U23-002: 5 minutes (to 90% in airflow of 1 m/sec); U23-003 & -004: 3 minutes (to 90% in airflow of 1 m/sec), 30 seconds (to 90% in water)
  • External Sensor Diameter: .5 cm 
  • External Sensor Cable Length: 1.8 m
  • Use with RS3 radiation screen for outdoor installations (see below)

 

Relative Humidity

  • Measurement range: 0 to 100% RH
  • Accuracy: ±2.5% from 10 to 90%
  • Resolution (12-bit): 0.03% RH
  • Response time: U23-001: 10 minute typical (to 90% in airflow of 1 m/sec; RH change only);
  • U23-002: 4 minutes typical (to 90% in airflow of 1 m/sec; RH change only)
  • External Sensor Diameter: 1.0 cm 
  • External Sensor Cable Length: 1.8 m


Required Software

HOBOware Software and an Optic USB Base Station* with Coupler, are required to operate the HOBO Pendant loggers. The Optic USB Base Station includes an Optic Base Station and Coupler. *The HOBO Waterproof Shuttle can also be used as a base station.

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HOBO Pro V2 brochure


File Size 273KB   Filename onset_hobo_u23_pro_v2_data_loggers.pdf   Download

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