Hobo U12-008 Manual

4-external channel outdoor/industrial data logger

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HOBO
U12 4-External Channel
®
Outdoor/Industrial Data Logger
(Part # U12-008)
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
External input channels (see sensor manual): 0 to 2.5 VDC
range
(with CABLE-ADAP5) and 0 to 10 VDC (with
CABLE-ADAP10)
Accuracy
± 2 mV ± 2.5% of absolute reading
(logger only)
± 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
Logging: -20° to 70°C (-4° to 158°F)
temperature
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).
© 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
Plot A
Accessories
Replacement Parts Kit (Part # H8X4-BK)
• Replacement Desiccant (Part # DESIC-
PACK)
• U-Bolt (Part # U-BOLT-KIT)

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Summary of Contents for Hobo U12-008

  • Page 1 European Union (EU). • U-Bolt (Part # U-BOLT-KIT) © 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.
  • Page 2 HOBO U12 4-External Channel Outdoor/Industrial Data Logger ® 4-20mA Input Cable computer. Special precautions may be necessary if any of your voltage or current source common lines are not tied to earth This cable (part number CABLE-4-20mA) measures current ground. Input isolators may be needed in industrial environments from 0 to 20.1 mA.
  • Page 3 HOBO U12 4-External Channel Outdoor/Industrial Data Logger ® 7. Make sure the desiccant cartridges are fresh. (If you are Launching the Logger using the logger for the first time, remove the two desiccant Be sure to plug the external sensors into the logger before cartridges from the foil pouch and install them in the cavity launching.
  • Page 4 HOBO U12 4-External Channel Outdoor/Industrial Data Logger ® protected from moisture and other environmental factors that U-bolt clamps (part # U-BOLT-KIT) are preferred for mounting could damage it. To mark an event, press the button for at least to a 1" pipe (1.3" outside diameter), as shown.

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