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  5. U23 Pro V2 Temperature Relative Humidity Data Logger

Weatherproof temperature and relative humidity data logger with built-in sensors for outdoor or condensing environments, forests, crop fields, green houses, museums, food storage and processing facilities

Weatherproof housing for use in outdoor or condensing environments, high accuracy, replaceable relative humidity sensor, Optic USB interface for fast and reliable data download

HOBO U23 Pro V2 weatherproof data logger with built-in temperature and relative humidity sensor is commonly used for monitoring temperature and humidity level in green houses, crop fields and nursery; for studying environmental conditions in forests, wetlands, and other natural habitats. For assessing indoor air quality (IAQ), preserving artifacts by maintaining optimal humidity levels, evaluating heating, ventilation, and air conditioning systems of HVAC system.

HOBO Pro V2 U23 001A

HOBO U23-001A Pro v2 is a weatherproof data logger with built-in temperature and relative humidity sensors. Weatherproof housing for use in outdoor or condensing environments. It's internal relative humidity sensor provides superior durability in humid environments.

HOBO U23-002A Pro v2 External Temperature/Relative Humidity Data Logger with external RH sensor is also available for tight spaces.

IMPORTANT INFORMATION
Requires HOBOware software and either an Optic USB Base Station or HOBO Waterproof Shuttle (U-DTW-1). HOBOware Pro is required when using the HOBO U-DTW-1 Waterproof Shuttle.

 

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)

The country of origin for this product is the United States.

Specifications
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%)		 U23-001A 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
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 minutes in air moving 1 m/sec with protective cap
U23-002A: 15 seconds in air moving 1 m/sec
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 (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); 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
CE Compliant The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).
 
Availability: Subject to prior order
Unit Price: Tk. 25,000 per unit (only data logger, without Optic USB interface for data download)
 

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