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Hobo U22-001 – Onset

Water temperature data logger, offload data via the BASE-U-4 optic USB base station or the U-DTW-1 waterproof shuttle

The Hobo Water Temp Pro v2 is durable with 12-bit resolution. Complete with a precision sensor for ±0,2°C accuracy, this logger measures temperatures between -40°C and 70°C in air and up to 50°C in water. Its waterproof, streamlined case allows for extended deployment in fresh or salt water. Moreover, the Water Temp Pro v2’s optical USB interface makes it possible to offload data even while the logger is wet or underwater. A solar radiation shield is required to obtain accurate air temperature measurements in sunlight (RS1 Solar Radiation Shield, assembly required: or M-RSA pre-assembled Solar Radiation Shield).

This data logger is ideal for research-grade measurements at an affordable price. It is waterproof to 120 meters and you can readout the data in less than 30 seconds via fast the Optic USB interface. This is an extra article which is required for data readout.
This data logger is compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis.
This data logger operates in outdoor and water environments, the data logger supports the following measurements: temperature and water temperature.

Technical specifications

Operation range: -40° to 70°C in air: maximum sustained temperature of 50°C in water

Accuracy: ±0.21°C from 0° to 50°C

Battery: 2/3 AA, 3,6 Volt Lithium, factory-replaceable only

Battery life (typical use): 6 years with 1 minute or greater logging interval

Waterproof: to 120 meters

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.

CheckOptional with calibration

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