HOBO U23 Pro v2 Temperature/Relative Humidity Data Logger

SKU: U23-001

Overview

The HOBO Pro v2 Temperature/Relative Humidity data logger is a weatherproof data logger with built-in temperature and relative humidity sensors. The Relative Humidity sensor provides superior durability in humid environments and is user-replaceable.

Highlighted Features

  • Weatherproof 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
  • Compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis (HOBOware Pro is required when using the U-DTW-1 Waterproof shuttle)

In what environment does this data logger operate?

This data logger operates in an outdoor environment.

What measurements does this data logger support?

The U23-001 data logger supports the following measurements: Relative Humidity and Temperature

Temperature Sensor

Operation range internal sensors :
-40° to 70°C (-40° to 158°F)

Accuracy :
±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F)

Resolution :
0.02°C at 25°C (0.04°F at 77°F)
Response Time (typical to 90%) - temperature

40 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%

Accuracy :
±2.5% from 10% to 90% RH (typical), to a maximum of ±3.5% including hysteresis at 25°C (77°F); below 10% and above 90% ±5% typical

Resolution :
0.05%
Response Time (typical to 90%) - RH

40 minute in air moving 1 m/sec with protective cap

Stability (drift ): < 1% per year typical
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

ASA styrene polymer RH sensor cap; modified hydrophobic polyethersulfone membrane
Cables

No cables
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)
Weight

57 g (1.5 oz)
Dimensions

Housing measures 10.2 × 3.8 cm (4.0 × 1.5 in.)
NIST Certification

Temperature certificate available for additional charge

HOBO U23-001 Data Sheet

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HOBO U23 Pro v2 Data Sheet

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HOBO U23 Pro v2 Quick Start Guide

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HOBO U23 Pro v2 Manual

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