HOBO® Water Temp Pro v2 (U22-001) Manual
10366-E MAN-U22-001
The HOBO Water Temp Pro v2 logger is designed with a durable, streamlined, UV-stable case
for extended deployments measuring temperature in fresh or salt water. The small size of
the logger allows it to be easily mounted and/or hidden in the field. It is waterproof up to
120 m (400 feet) and rugged enough to withstand years of use, even in stream conditions. It
has enough memory to record over 42,000 12-bit temperature measurements.
The logger uses an optical USB communications interface for launching and reading out the
logger. The optical interface allows the logger to be offloaded without compromising the
integrity of the seals. The USB compatibility allows for easy setup and fast downloads.
Specifications
Temperature Sensor
Operation Range
-40° to 70°C (-40° to 158°F) in air; maximum sustained temperature of
50°C (122°F) in water
Accuracy
0.2°C over 0° to 50°C (0.36°F over 32° to 122°F), see Plot A
Resolution
0.02°C at 25°C (0.04°F at 77°F), see Plot A
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
Logger
Real-time Clock
± 1 minute per month 0° to 50°C (32° 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 (1.5 oz)
Dimensions
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 (Fresh Water)
+13 g (0.5 oz.) in fresh water at 25°C (77°F); +17 g (0.6 oz.) with
optional boot
Waterproof
To 120 m (400 ft.)
Shock/Drop
1.5 m (5 ft.) drop at 0°C to 70°C (32°F to 150°F)
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 the 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.
NIST Certificate
Available for additional charge
The CE Marking identifies this product as complying with all relevant
directives in the European Union (EU).
HOBO Water Temp Pro v2
U22-001
Required Items:
•
Coupler (COUPLER-C) and
USB Optic Base Station
(BASE-U-4)
or
HOBO Waterproof Shuttle
(U-DTW-1)
•
HOBOware
®
Accessories:
•
Protective boot; black
(BOOT-BLK) or white
(BOOT-WHT)
