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HOBO U23 Pro v2 External Temperature Data Logger - U23-004

The HOBO Pro v2 Temperature/External Temperature data logger is a weatherproof data logger with an external soil/water temperature sensor on a 6-foot cable useful for situations where just one temperature probe is required. An internal temperature sensor is also included.
Part Number: U23-004
$253.00 ex GST
[$278.30 inc GST]

The HOBO Pro v2 Temperature/External Temperature data logger is a weatherproof data logger with an external soil/water temperature sensor on a 6-foot cable useful for situations where just one temperature probe is required. An internal temperature sensor is also included.

Features:

  • Pro v2 sensor mount in solar radiation shieldWeatherproof housing for use in outdoor or condensing environments
  • High accuracy
  • Small-diameter external sensor versions for measurements in tight spaces
  • Optic USB interface for fast and reliable download

Environment:
The U23-004 Data Logger is for use in Outdoorenvironments

Measurements:
The U23-004 Data Logger supports the following measurements:

Temperature
 
 
 
The HOBO U23 Loggers require a Base Station BASE-U-4 and HOBOware Software or Shuttle U-DTW-1 and HOBOware-Pro to operate.

The HOBO Pro v2 Temperature/External Temperature data logger is a weatherproof data logger with an external soil/water temperature sensor on a 6-foot cable useful for situations where just one temperature probe is required. An internal temperature sensor is also included.

Features:

  • Pro v2 sensor mount in solar radiation shieldWeatherproof housing for use in outdoor or condensing environments
  • High accuracy
  • Small-diameter external sensor versions for measurements in tight spaces
  • Optic USB interface for fast and reliable download

Environment:
The U23-004 Data Logger is for use in Outdoorenvironments

Measurements:
The U23-004 Data Logger supports the following measurements:

Temperature
 
 
 
The HOBO U23 Loggers require a Base Station BASE-U-4 and HOBOware Software or Shuttle U-DTW-1 and HOBOware-Pro to operate.

HOBO Temperature and Relative Humidity Data Logger U23 Pro v2

Learn the features of this outdoor temperature and relative humidity logger, perfect for condensing environments. Product specs such as robust case, built-in temperature and relative humidity sensor, temperature range and accuracy, and relative humidity range and accuracy are discussed. Battery details, optic USB data offload, and compatibility with HOBOware Pro software are also covered.

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)
U23-003 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

Plot A and Plot BResponse time
(typical to 90%)
U23-001 Internal sensor: 40 minutes in air moving 1 m/sec
U23-002 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%. See Plot B for full range.

Resolution: 0.03%

Response time
(typical to 90%)
U23-001: 40 minute in air moving 1 m/sec with protective cap
U23-002: 5 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:
U23-001: No cables
U23-002: 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 (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:
U23-001: 57 g (1.5 oz)
U23-002: 118 g (3.1 oz)
U23-003: 138 g (3.7 oz)
U23-004: 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

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

HOBOware Software

IMPORTANT: This HOBO data logger requires HOBOware software and a communications cable (see related products below)
HOBOware Software is a FREE download


or Learn more about HOBOware and HOBOware-Pro features

 

Note: This logger also operates with the advanced HOBOware-Pro Software

 


 

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