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HOBO® U12 Deep Ocean Temperature
Logger (U12-015-03) Manual
HOBO U12 Deep Ocean
Temperature Logger
U12-015-03
Included Items:
• O-ring replacement kit
(U12-015-03-ORING-KIT),
which includes 4 blue
O-rings, 4 orange backup
rings, and silicone-based
O-ring lube
Required Items:
• HOBOware® Pro 3.2 or
later (go to
www.onsetcomp.com/
hoboware-free-download)
• USB Cable
14767-C MAN-U12-015-03
The HOBO U12 Deep Ocean Temperature Logger is a single-channel
temperature logger with 12-bit resolution that can record up to 43,000
measurements. With its robust titanium housing, this logger is designed to
withstand the rigors of saltwater deployment. It has a depth rating to 11,000
meters and a temperature range from -40° to 125°C, making it the ideal logger
to handle the ocean extremes of depth and temperature.
Specifications
Measurement Range
Accuracy
Resolution
Drift
Response Time in Water
Time Accuracy
Operating Environment
Operating Temperature
Battery Life
Memory
Construction
Weight
Size
Depth Rating
Vibration Rating
Environmental Rating
NIST Certificate
1.8
Accuracy
1.6
Resolution
1.4
1.2
1
0.8
0.6
0.4
0.2
0
-40
-20
0
20
40
60
Tem perature (°C)
Plot A
-40° to 125°C (-40° to 257°F)
±0.22°C at 25°C (±0.4°F at 77°F), see Plot A
0.025°C at 25°C (0.045°F at 77°F), see Plot A
0.05°C/year + 0.1°C/1000 hrs above 100°C (0.09°F + 0.02°F/1000 hrs
above 212°F)
< 4 minutes, typical to 90%
±2 minute per month at 25°C (77°F), see Plot B
Air, water, steam, 0 to 100% RH
Logging: -40° to 125°C (-40° to 257°F)
Launch/Readout: 0° to 50°C (32° to 122°F), per USB specification
3 years typical use, factory replaceable
64K bytes (43,000 12-bit measurements)
Titanium with O-ring seals and backup rings
105 g (3.7 oz)
114 x 20.6 mm diameter (4.5 x 0.81 in. diameter)
11,000 m (36,080 ft)
Navy spec: NAVMAT P-9492
IP68
Available for additional charge; temperature range -30° to 120°C
(-22° to 248°F)
The CE Marking identifies this product as complying with all relevant
directives in the European Union (EU).
200
100
0
-100
-200
-300
-400
80
100
120
-40
-20
8.6
4.3
0.0
-4.3
-8.6
-13.0
-17.3
0
20
40
60
80
100
120
Temperature (°C)
Plot B
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Summary of Contents for Hobo U12
- Page 1 HOBO® U12 Deep Ocean Temperature Logger (U12-015-03) Manual The HOBO U12 Deep Ocean Temperature Logger is a single-channel temperature logger with 12-bit resolution that can record up to 43,000 measurements. With its robust titanium housing, this logger is designed to withstand the rigors of saltwater deployment.
- Page 2 HOBO U12 Deep Ocean Temperature Logger Manual Connecting the Logger To launch or read out the logger, use the USB cable supplied with HOBOware to connect to the computer. 1. Remove the titanium end-cap from the logger by turning it counter-clockwise. If the cap is difficult to turn, place the stem of a small screwdriver through the hole in the end-cap for better leverage.
- Page 3 End-cap with the correct order of O-rings and backup rings Assembled end-cap © 2011–2018 Onset Computer Corporation. All rights reserved. Onset, HOBO, and HOBOware are trademarks or registered trademarks of Onset Computer Corporation. All other trademarks are the property of their respective companies.
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