HOBO U23 Pro v2 External Temperature/Relative Humidity

Data Loggers

HOBO U23 Pro v2 External Temperature/Relative Humidity

  • Vendor:Onset

Availability: Available Item
$406.00
Qty Price
Buy 1 $406.00 ea
Buy 10 $385.70 ea

HOBO data loggers requires HOBOware software (USB interface cable included w/CD purchase) and a communications device. 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 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.

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

In what environment does this data logger operate?

This data logger operates in an outdoor environment.

What measurements does this data logger support?

The U23-002A data logger supports the following measurements: Relative Humidity and Temperature

Temperature Sensor
Operation range internal sensors: -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: ±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F); see Plot A
Resolution: 0.02°C at 25°C (0.04°F at 77°F); see Plot A
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Response Time (typical to 90%)
U23-001A internal sensor: 40 minutes in air moving 1 m/sec
U23-002A external temperature sensor: 5 minutes 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): < 0.1°C (0.18°F) per year
Relative Humidity Sensor (U23-001, U23-002 only)
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. See Plot B for full range.
Resolution: 0.03%
Response Time (typical to 90%)
U23-001A: 40 minute in air moving 1 m/sec with protective cap
U23-002A: 5 minutes 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
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.)
U23-00: 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 (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
U23-001A: 57 g (1.5 oz)
U23-002A: 118 g (3.1 oz)
U23-003: 102 g (2.7 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