U23-002 Ext.Temperature/RH Data Logger (weatherproof)

Description

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

IMPORTANT: Requires Hoboware software and a base unit or waterproof data-shuttle.
NOTE: Hoboware software is now available as a free download that will suffice for most applications. The PRO Version is available for extra analysis tools and use with a Data Shuttle. For the differences between the FREE and PRO versions, please refer to the BHW-Lite (Hoboware Free DVD & USB Cable) entry in the Recommended Products section (below). The download link is also available on the BHW-LITE Page.
Please order a BASE Station (USB-Optic Interface) via the Recommendated Products area below if required.

Features

• Weatherproof housing for use in outdoor or condensing environments
• High accuracy
• Replaceable RH 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

Specifications

Temperature Sensor

• Operation range:
  Internal sensors: -40° to 70°C
  U23-002 external temperature sensor: -40 to +70°C
• Accuracy: 0.2°C over 0° to 50°C
• Resolution: 0.02°C at 25°C
• 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 1m/sec
• Stability (drift): < 0.1°C per year

Relative Humidity Sensor

• Operation range: 0-100% RH, -40° to 70°C
  Exposure to conditions below -20°C or above 95% RH may temporarily increase the maximum RH sensor error by an additional 1%
• Accuracy: ±2.5% from 10 to 90% typical, to a maximum of ±3.5%.
• Resolution: 0.03%
• Response time (typical to 90%): 40 minute in air moving 1 m/sec with protective cap
  U23-002: 10 minutes in air moving 1m/sec with protective cap
• Stability (drift): < 1% per year typical; hysteresis 1%

Logger

• Operation range -40° to 70°C
• Real-time clock ± 1 minute per month 0° to 50°C
• 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: 1off 184cm (6') PVC cable; sensor diameter 1cm
• 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: 118 g
• Dimensions: Housing measures 10.2 x 3.8 cm

Technical

U23 Series Weatherproof Data Loggers