HOBO Pendant® U22-001 Water Temperature Data Logger
The HOBO Water Temp Pro v2 is a durable data logger with 12-bit resolution, complete with a precision sensor for ±0.2 °C accuracy. Its waterproof, streamlined case allows for extended deployment in both fresh and saltwater.
HOBO Water Temp Pro v2 Data Logger U22
The introductory video shows the various functions of the water temperature logger, including the waterproof depth, the temperature accuracy in degrees Celsius and the statistics storage. You will also receive other interesting information about the battery, optical communication for data transfer underwater and compatibility with the HOBOware Pro software.
Highlights
The HOBO data logger U22 is suitable for a variety of indoor, outdoor and underwater applications, in both fresh and saltwater.
Please note: An interface is required for configuration and reporting
- Research-grade measurements at an affordable price
- Waterproof to 120 meters (5000 feet)
- Data download in less than 30 seconds via the Optic USB interface
Literature
HOBOware
Der Datenlogger HOBO Pendant® U22-001 unterstützt die kostenfreie Grafik- und Analysesoftware HOBOware. HOBOware ermöglicht Ihnen die einfache Anzeige und Analyse Ihrer aufgezeichneten Messdaten per Mausklick. Sie können den Datenlogger einfach per Kabel an Ihren Computer anschließen.
Features and Technical Specifications
Water temperature data logger U22-001
| Monitoring Parameters | Temperature and water temperature |
| Time accuracy | ±1 Minute per month at 0 °C to +50 °C (+32 °F to 122 °F) |
| Battery | 2/3 AA, 3.6 Volt Lithium, factory-replaceable ONLY |
| Battery life (typical use) | 6 years with 1 minute or greater logging interval |
| Memory (non-volatile) | 64K bytes memory (approx. 42,000 12-bit temperature measurements) |
| Weight | 42 g |
| Size | 3.0 cm (1.19 in.) maximum diameter, 11.4 cm (4.5 in.) length; mounting hole 6.3 mm (0.25 inches) diameter |
| Wetted Materials | Polypropylene case, EPDM® o-rings, stainless steel retaining ring |
| Buoyancy (freshwater) | +13 g (0.5 oz.) in freshwater at +25 °C (+77 °F); +17 g (0.6 oz.) with optional boot |
| Waterproof | up to 120 m (5000 feet) |
| Shock/drop | 1.5 m (5 ft) drop between 0 °C and +70 °C (-4 °F to +68 °F) |
| Log 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. |
| Launch modes | Immediate start and delayed start |
| 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. |
| Protection class: | IP 68 |
| NIST Certificate | Available for an additional fee |
| For more detailed product specifications, please read the User’s Guide | |
Temperature sensor
| Operating Range | 40 °C to +70 °C (-4 °F to +158 °F) in air, maximum sustained temperature of +50 °C (+122 °F) in water |
| Accuracy | ±0.21 °C from 0 °C to +50 °C (±0.38 °F from +32 °F to +122 °F) |
| Resolution | 0.02 °C at 25 °C (0.036 °F at +77 °F) |
| Response time (90%) | 5 minutes in water; 12 minutes in air moving 2 m/sec (typical) |
| Stability (drift) | <0.1 °C (0.18 F) per year |
BASE-U-4 - Universal Optic Base Station
The Universal Optic USB Base Station and couplers are used to offload data from any HOBO® data logger with an Optic USB interface. The splash-resistant Optic USB Base Station connects to your computer via USB, while connecting to the data logger via an appropriate coupler.
Literature and videos
HOBO Waterproof Shuttle - U-DTW-1
The HOBO Waterproof Shuttle provides convenient readout and relaunching of underwater and outdoor HOBO data loggers with an Optic USB interface, and is waterproof to 20 m. The HOBO Waterproof Shuttle can also be used as a base station.
Note 1: Couplers are included for compatibility with our U-series loggers with optical communication, including the UA Pendants, U20 water level, U22 Water Temp Pro, UTBI TidbiT, U23 Pro Temp/RH, U24 Conductivity and U26 DO data loggers.
Note 2: HOBOware Pro is required when using the U-DTW-1 Waterproof shuttle.