New
Data Recorder (Data Logger) HOBO thermo-hygrometer for measurement of temperature and relative humidity in the open.
Availability date:
Environment of Use | Outdoor |
Number of Channels | 2: Temp + Rel. Humidity |
ADC Bits | 12 bit |
Precision | ±0.2°C |
Resolution | 0.2°C |
With Display | No |
IP Classification | Submersible |
Communications | Optic |
Battery Life | 1 year + |
Memory Capacity | 21,000 Temperature and RH measurements |
The Sensor measures: | Temp./Rel. Humidity |
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.
COMMUNICATIONS:
- 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)
This data logger operates in an outdoor environment.
The U23-001 data logger supports the following measurements: Relative Humidity and Temperature.
What's in the box?
- HOBO U23-001 Pro v2 Temp/RH Data Logger
- Clamp and mounting screws
- UV protective cap
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 |
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU). |
The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available.
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