Operation range: -40° to 70°C (-40° to 158°F) in air; maximum sustained temperature of 50°C (122°F) in water
Accuracy:
-
±0.21°C from 0° to 50°C
±0.38°F from 32° to 122°F
Resolution:
-
0.02°C at 25°C
0.04°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
Real-time clock:
-
± 1 minute per month 0° to 50°C
32° to 122°F
Battery: 2/3 AA, 3.6 Volt Lithium, non-replaceable
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:
-
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:
-
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 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
Environmental Rating: IP68
What’s in the box
- HOBO U22-001 Water Temp Pro V2
- Communications window protective cap
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