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HOBO U23 Pro v2 External Temperature/Relative Humidity Data Logger - U23-002

 
 
 

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The HOBO Pro v2 External Temperature/Relative Humidity Data Logger is a weatherproof data logger with an external Temperature and Relative Humidity sensor on a 6-foot cable for fast sensor response and deployment in tight spaces. The Relative Humidity sensor features fast response and superior durability in humid environments, and is user-replaceable.

Features:

  • Pro v2 sensor mount in solar radiation shieldWeatherproof housing for use in outdoor or condensing environments
  • High accuracy
  • Replaceable Relative Humidity sensor 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
Environment:
The U23-002 Data Logger is for use in Outdoor environments
Measurements:
The U23-002 Data Logger supports the following measurements : Relative Humidity, Temperature
SPECIFICATIONS

Temperature Sensor
Operation range:
Internal sensors: -40° to 70°C (-40° to 158°F)
U23-002 external temperature sensor: -40° to 70°C (-40° to 158°F)

U23-002 Plot A Accuracy: 0.2°C over 0° to 50°C (0.36°F over 32° to 122°F); see Plot A

Resolution: 0.02°C at 25°C (0.04°F at 77°F); see Plot A

Response time: (typical to 90%)
Internal sensors: 40 minutes in air moving 1 m/sec
U23-002 external temperature sensor: 5 minutes in air moving 1 m/sec

Stability (drift): < 0.1°C (0.18°F) per year


Relative Humidity Sensor
Operation range: 0-100% RH, -40° to 70°C (-40° to 158°F)
Exposure to conditions below -20°C (-4°F) or above 95% RH may temporarily increase the maximum RH sensor error by an additional 1%

U23-00x Plot BAccuracy: ±2.5% from 10 to 90% typical, to a maximum of ±3.5%. See Plot B

Resolution: 0.03%

Response time (typical to 90%):
U23-002: 10 minutes in air moving 1 m/sec with protective cap

Stability (drift): < 1% per year typical; hysteresis 1%


Logger
Operation range -40° to 70°C (-40° to 158°F)
Real-time clock ± 1 minute per month 0° to 50°C (32° to 122°F)
Battery 1/2 AA, 3.6 Volt lithium, user-replaceable (part # HP-B)

Battery life (typical use): 3 years with 1 minute or greater logging interval

Memory (non-volatile): 64K bytes memory (approx. 21,000 temperature and RH measurements)

Materials All models:
ASA styrene polymer housing and mounting clamp; polypropylene protective cap; Buna-N o-ring(s)
U23-001, U23-002 only: ASA styrene polymer RH sensor cap; modified hydrophobic polyethersulfone membrane

Cables:
U23-002: One 184 cm (6 ft.) PVC cable; sensor diameter 1 cm (0.38 in.)

Environmental rating: Electronics housing is NEMA 6P equivalent (tolerant of brief submergence)
Units with RH sensors are NEMA 4 equivalent (splash-resistant)

Launch modes: Immediate start; delayed start

Logging interval: Fixed-rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations; logging intervals from 1 second to 18 hours (refer to HOBOware software manual)

Offload modes: Offload while logging; stop and offload

Battery indication: Battery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile.

Weight:
U23-002: 118 g (3.1 oz)

Dimensions: Housing measures 10.2 × 3.8 cm (4.0 × 1.5 in.)

NIST certificate Temperature certificate available for additional charge

The CE Marking identifies this product as complying with the relevant directives in the European Union (EU).