HOBO U23 Pro v2 Temperature/Relative Humidity Data Logger

Data Loggers

HOBO U23 Pro v2 Temperature/Relative Humidity Data Logger

  • Vendor:Onset

Availability: Available Item
$249.00
Qty Price
Buy 1 $249.00 ea
Buy 10 $236.55 ea

HOBO data loggers require HOBOware software and a USB cable. (Note: A USB cable is included w/HOBOware Pro CD or USB software purchase). HOBOware Pro is required when using the U-DTW-1 Waterproof shuttle. See compatible items below or build your kit above.

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 U23-001A internal sensor: -40 to 70°C (-40 to 158°F)
U23-002A external temperature sensor: -40 to 70°C (-40 to 158°F)
U23-003 and U23-004 external sensors: -40 to 100°C (-40 to 212°F), with tip and cable immersion in fresh water up to 50°C (122°F) for one year
Accuracy: U23-001A and U23-002A: ±0.25°C from -40 to 0°C (±0.45 from -40 to 32°F), ±0.2°C from 0 to 70°C (±0.36 from 32 to 158°F)
U23-003 and U23-004: ±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F); see Plot A
Resolution: U23-001A and U23-002A: 0.04°C (0.072°F)
U23-003 and U23-004: 0.02°C at 25°C (0.04°F at 77°F); see Plot A
Response Time (typical to 90%)
U23-001 internal sensor: 10 minutes in air moving 1 m/sec
U23-002A external temperature sensor: 3 minutes, 45 seconds in air moving 1 m/sec
U23-003 and U23-004 external sensors: 3 minutes in air moving 1 m/sec; 30 seconds in stirred water
Stability (drift): U23-001A and U23-002A: <0.01°C (0.018°F) per year
U23-003 and U23-004: <0.1°C (0.18°F) per year
Relative Humidity Sensor (U23-001A, U23-002A only)
Operation range : 0 to 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%)
U23-001A: 40 minute in air moving 1 m/sec with protective cap
U23-002A: 15 seconds in air moving 1 m/sec
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); U23-001A,
U23-002A only: ASA styrene polymer RH sensor cap; modified hydrophobic polyethersulfone membrane
Cables
U23-001A: No cables
U23-002A: One 184 cm (6 ft.) PVC cable; sensor diameter 1 cm (0.38 in.)
U23-003: Two 184 cm (6 ft.) PVC cables; sensor diameter 0.5 cm (0.20 in.)
U23-004: One 184 cm (6 ft.) PVC cable; sensor diameter 0.5 cm (0.20 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
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
U23-001A: 57 g (1.5 oz)
U23-002A: 118 g (3.1 oz)
U23-003: 138 g (3.7 oz)
Dimensions: Housing measures 10.2 — 3.8 cm (4.0 — 1.5 in.)
NIST certificate: Temperature certificate available for additional charge
CE: The CE Marking identifies this product as complying with all relevant directives in the European Union (EU)
SOFTWARE
Graphing & Analysis
  • BHW-PRO-CD HOBOware Pro CD or USB Drive (USB Cable Included) Software
  • BHW-PRO-DLD HOBOware Pro - Mac/Win (Download Only) Software
COMMUNICATIONS
Data Offload - Base Stations - Shuttles - Couplers MAINTENANCE
Batteries
  • HP-B Replacement battery for U23 data loggers (sold individually)
Desiccants Replacement Parts ACCESSORIES
Carrying Case Compliance Certificates
  • COMPLIANCE CERT Compliance Certification
Data Offload - Base Stations - Shuttles - Couplers
  • COUPLER2-E Replacement Coupler for HOBO Pro v2 Replacement
NIST Setup & Certifications
  • NIST-RH Initial Purchase RH NIST Calibration Service Certification
  • NIST-SETUP Setup Charge for NIST Traceable Certification
  • NIST-TEMP-POINT NIST Temperature point Certification
Protective Covers and Boots
  • HUM-RHCAP2 Replacement RH caps - 5 pack Replacement
Solar Radiation Shields
  • M-RSA Solar Radiation Shield
  • RS1 Solar Radiation Shield
UV Protection Caps
  • U23-CAP 5 UV Protection Caps for U23 Series Data Loggers Replacement