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HOBO U12 Temp/RH/2
2 External Data Logger
(Part # U12-013)
Thank you for purchasing a HOBO data logger. With proper care, it will give you years of accurate and reliable measurements.
The HOBO U12 Temperature/Relative Humidity/2 External Data Logger is a four-channel logger with 12-bit resolution and can record up to 43,000
measurements or events. The two external channels accept a variety of sensors, including temperature and split-core AC current sensors as well as 4-
20 mA and voltage input cables (sold separately). The logger uses a direct USB interface for launching and data readout by a computer.
An Onset software starter kit is required for logger operation. Visit www.onsetcomp.com for compatible software.
Inside this package:
• HOBO U12 Temp/RH/
2 External Data Logger
• Mounting kit with magnet, hook and loop tape, tie-wrap mount, tie wrap, and two screws.
Specifications
Measurement range
Accuracy
Resolution
Drift
Time accuracy
Response time in airflow of 1 m/s (2.2 mph)
Operating temperature
Battery life
Memory
Weight
Dimensions
© 2008 Onset Computer Corporation
Part #: MAN-U12-013, Doc #: 7662-C
Temperature: -20° to 70°C (-4° to 158°F)
RH: 5% to 95% RH
External input channels (see sensor manual): 0 to 2.5 DC Volts
Temperature: ± 0.35°C from 0° to 50°C (± 0.63°F from 32° to 122°F), see Plot A
RH: +/- 2.5% from 10% to 90% RH (typical), to a maximum of +/- 3.5%. See Plot B.
External input channels (see sensor manual): ± 2 mV ± 2.5% of absolute reading
Temperature: 0.03°C at 25°C (0.05°F at 77°F), see Plot A
RH: 0.03% RH
Temperature: 0.1°C/year (0.2°F/year)
RH: <1% per year typical; RH hysteresis 1%
± 1 minute per month at 25°C (77°F), see Plot C
Temperature: 6 minutes, typical to 90%
RH: 1 minute, typical to 90%
Logging: -20° to 70°C (-4° to 158°F)
Launch/readout: 0° to 50°C (32° to 122°F), per USB specification
1 year typical use
64K bytes (43,000 12-bit measurements)
46 g (1.6 oz)
58 x 74 x 22 mm (2.3 x 2.9 x 0.9 inches)
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).
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Related Manuals for Hobo U12
Summary of Contents for Hobo U12
- Page 1 Thank you for purchasing a HOBO data logger. With proper care, it will give you years of accurate and reliable measurements. The HOBO U12 Temperature/Relative Humidity/2 External Data Logger is a four-channel logger with 12-bit resolution and can record up to 43,000 measurements or events.
- Page 2 HOBO U12 Temp/RH/2 External Data Logger Connecting the logger The U-Family logger requires an Onset-supplied USB interface cable to connect to the computer. If possible, avoid connecting at temperatures below 0°C (32°F) or above 50°C (122°F). 1. Plug the large end of the USB interface cable into a USB port on the computer.
- Page 3 HOBO U12 Temp/RH/2 External Data Logger Protecting the logger The logger can be permanently damaged by corrosion if it gets wet. Protect it from condensation. If it gets wet, remove the battery immediately and dry the circuit board with a hair dryer before reinstalling the battery. Do not let the board get too hot. You should be able to comfortably hold the board in your hand while drying.
- Page 4 Dispose of the battery according to local regulations for lithium batteries. © 2008 Onset Computer Corporation. All rights reserved. Part #: MAN-U12-013, Doc #: 7662-C 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.
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