Onset U20L Specifications
HOBO® U20L Series Water Level Loggers
A new standard for price/performance
HOBO U20L Series Water Level loggers set a new
standard for price/performance for accurate water level
and temperature monitoring. The loggers combine 0.1%
measurement accuracy, a polypropylene housing for use
in both fresh and salt water, and a non-vented design for
convenient and hassle-free deployment.
Supported Measurements: Water Level, Barometric Pressure,
Pressure (Absolute), Temperature
Key Advantages:
• Self-contained, non-vented design enables easy deployment
• Ideal for use in both fresh and saltwater environments
• Durable ceramic pressure sensor
• Ideal for use in wells, streams, lakes, wetlands and tidal areas
Minimum System Requirements:
Software
Base Station
1
Coupler
2
1
HOBO Base Station or HOBO Waterproof Shuttle required. See page 39 for more details.
2
Coupler included with HOBO Base Station or HOBO Waterproof Shuttle.
For complete information and accessories, please visit: www.onsetcomp.com
Part number U20L-04 U20L-01 U20L-02
HOBO Water Level Specications
Range
Factory Calibrated
Range (0° to 40°C;
32° to 104°F)
Water Level Accuracy
(Typical Error)
Resolution 0.14 cm (0.005 ft) water 0.21 cm (0.007 ft) water 0.41 cm (0.013 ft) water
Burst Pressure
Temperature Specications (all models)
Range -20° to 50°C (-4° to 122°F)
Accuracy ± 0.37° @ 20°C (± 0.67° @ 68°F) ± 0.44° from 0° to 50°C (± 0.79° from 32° to 122°F)
Resolution (10 bit) 0.1° @ 20°C (0.18° @ 68°F)
Response time 10 minutes (to 90% in water)
Dimensions 3.18 cm diameter x 15.24 cm (1.25 x 6.0 in) hole in mounting bail 6.3 mm (0.25 in)
CE compliant Yes
0-4 m (0-13 ft)
0 to 145 kPa (0 to 21 psia)
69 to 145 kPa
(10 to 21 psia)
± 0.4 cm (0.013 ft)
(± 0.1% FS)
310 kPa (45 psia)
18 m (60 ft) depth
0-9 m (0-30 ft)
0 to 207 kPa (0 to 30 psia)
69 to 207 kPa
(10-30 psia)
± 1.0 cm (0.03 ft)
(± 0.1% FS)
310 kPa (45 psia)
18 m (60 ft) depth
0-30.6 m (0-100 ft)
0 to 400 kPa (0 to 58 psia)
69 to 400 kPa
(10 to 58 psia)
± 3.0 cm (0.1 ft)
(± 0.1% FS)
500 kPa (72.5 psia)
40.8 m (134 ft) depth
Contact Us
Sales (8am to 5pm ET, Monday through Friday)
Email sales@onsetcomp.com
Call 1-508-759-9500
In U.S. toll free 1-800-564-4377
Fax 1-508-759-9100
Technical Support (8am to 8pm ET, Monday through Friday)
Contact Product Support onsetcomp.com/support/contact
Call 1-508-759-9500
In U.S. toll free 1-877-564-4377
Onset Computer Corporation
470 MacArthur Boulevard
Bourne, MA 02532
Copyright© 2016 Onset Computer Corporation. All rights reserved. Onset, HOBO are registered trademarks of Onset Computer Corporation.
Patented technology (U.S. Patent 6,826,664) MKT1153-0229
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