HOBO
®
U12 4-External Channel
Outdoor/Industrial Data Logger
(Part # U12-008)
© 2010 Onset Computer Corporation. Onset and HOBO are registered trademarks of Onset Computer Corporation. Other products and brand names
may be trademarks or registered trademarks of their respective owners.
Part #: MAN-U12008, Doc #: 13132-C
Inside this package:
•
HOBO U12 4-External Channel Outdoor/Industrial Data
Logger
•
Desiccant pack
•
Mounting/spare parts kit: Allen screws, dome plug and O-
ring, O-ring lubricant, four mounting screws, and four flat
washers.
Thank you for purchasing a HOBO data logger. With proper
care, it will give you years of accurate and reliable
measurements.
The HOBO U12 4-External Channel Outdoor/Industrial data
logger has a 12-bit resolution and can record up to 43,000
measurements or events. The four external channels accept a
wide range of Onset and third-party sensors/transducers with
a 0-2.5 VDC output, including external temperature, AC
current, pressure, air velocity, and kW sensors. Specifications
for Onset sensors can be found at www.onsetcomp.com or by
contacting your Onset Authorized Dealer. For 0-5 VDC, 0-10
VDC, or 4-20mA output, use optional Onset Part No.
CABLE-ADAP5, CABLE-ADAP10, or CABLE-4-20mA
respectively.
The logger uses a direct USB interface for launching and data
readout by a computer.
Onset software is required for logger
operation. Visit www.onsetcomp.com for details.
Specifications
Measurement
range
External input channels (see sensor manual): 0 to 2.5 VDC
(with CABLE-ADAP5) and 0 to 10 VDC (with
CABLE-ADAP10)
Accuracy
(logger only)
± 2 mV ± 2.5% of absolute reading
± 2 mV ± 1% of reading for logger-powered sensors
Resolution 0.6mV
Time accuracy
± 1 minute per month at 25°C (77°F), see Plot A.
Operating range
-20 to 70°C (-4° to 158°F)
Weatherproof case tested to NEMA 6 standard
Operating
temperature
Logging: -20° to 70°C (-4° to 158°F)
Launch/readout: 0° to 50°C (32° to 122°F), per USB
specification.
Battery life
1 year typical use (see The Battery on page 4 for details)
Memory
64K bytes (43,000 12-bit measurements)
Weight
200 g (7 oz)
Dimensions
140 x 137 x 32 mm (5.5 x 5.38 x 1.25 inches)
The CE Marking identifies this product as complying with
all relevant directives in the European Union (EU).
Plot A
Accessories
•
Replacement Parts Kit (Part # H8X4-BK)
• Replacement Desiccant (Part # DESIC-
PACK)
• U-Bolt (Part # U-BOLT-KIT)
