Onset HOBO U26 Dissolved Oxygen Data Loggers.pdf
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- Attached to
- Rideline Software Update RFP
- Solicitation number
- S-R02706-00004170
- Issued by
- Lane County, Albany City, Oregon
About this file
This is a product specification document for the Onset HOBO U26 Dissolved Oxygen Data Logger, a water quality monitoring instrument manufactured by Onset Computer Corporation. The device is designed for measuring dissolved oxygen concentrations in aquatic environments including lakes, streams, rivers, estuaries, and coastal waters. The HOBO U26 combines optical dissolved oxygen sensor technology with temperature measurement capabilities and is intended for use by aquatic biologists, hydrologists, and research professionals conducting water quality assessments, climate change studies, and ecological and oceanographic research. The logger features a measurement range of 0 to 30 mg/L with accuracy of ±0.2 mg/L up to 8 mg/L and ±0.5 mg/L from 8 to 20 mg/L, operates at temperatures ranging from -5 to 40°C, and accommodates maximum depths of 100 meters. The device has a storage capacity of 21,700 measurement sets with adjustable logging intervals from 1 minute to 18 hours and includes a factory-replaceable 3.6V lithium battery with a three-year operational life at one-minute logging intervals.
The logger requires a HOBO Base Station or HOBO Waterproof Shuttle coupler for data offload through an optical USB interface and utilizes an easy-to-replace dissolved oxygen sensor cap with a six-month lifespan. The device offers software-based drift correction and provides salinity-adjusted dissolved oxygen concentrations and percent saturation calculations when paired with salinity meter readings or barometric pressure data. Technical support and sales are available through Onset Computer Corporation, located in Bourne, Massachusetts, with customer service hours from 8 a.m. to 5 p.m. ET Monday through Friday for sales inquiries and extended support hours from 8 a.m. to 8 p.m. ET. The product is CE compliant and includes patented RDO Basic sensor technology.
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| File | Type | Posted |
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| RideLine Software Update RFP 08.05.22.pdf |
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Text version
Affordable, high performance dissolved oxygen monitoring HOBO® Dissolved Oxygen Logger
*HOBO Base Station or HOBO Waterproof Shuttle required.
1Coupler included with HOBO Base Station or HOBO Waterproof Shuttle.
Key Advantages:
• Affordable, high performance DO monitoring with 0.2 mg/L accuracy
• Optical DO sensor technology for long-lasting calibration, less maintenance
• Software corrects for measurement drift from fouling; provides salinity-adjusted DO concentration and percent saturation (Salinity adjustment requires salinity meter reading or data logger file. Percent saturation requires barometric pressure data file.)
• Optic USB interface for high-speed, reliable data offload
• Easy-to-replace DO sensor cap lasts six months
The HOBO U26 Dissolved Oxygen Logger measures concentrations of dissolved oxygen in lakes, streams, rivers, estuaries, and coastal waters. Used by aquatic biologists, hydrologists, and other research professionals to monitor water quality, the U26 is ideal for climate change and environmental impact studies as well as ecological and oceanographic research.
The HOBO U26 combines the high-accuracy, robust performance of industry-leading RDO® Basic (Rugged Dissolved Oxygen) sensor technology with an easy-to-maintain design, all at a fraction of the cost of other monitoring options.
Supported Measurements: Dissolved Oxygen, Temperature
Minimum System Requirements:
Coupler1Software Base Station* http://www.onsetcomp.com/products/data-loggers/u26-001
Copyright© 2016 Onset Computer Corporation. All rights reserved. Onset, HOBO, HOBOware are registered trademarks of Onset Computer Corporation. Other products and brand names may be trademarks or registered trademarks of their respective owners. Patented technology (U.S. Patent 6,826,664) MKT1157-0229
For complete information and accessories, please visit: www.onsetcomp.com
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
Part number U26-001
Dissolved Oxygen Sensor Type Optical Measurement Range 0 to 30 mg/L Calibrated Range 0 to 20 mg/L; 0 to 35°C (32 to 95°F) Accuracy ± 0.2 mg/L up to 8 mg/L; ± 0.5 mg/L from 8 to 20 mg/L Resolution 0.02 mg/L Response time To 90% in less than 2 minutes DO Sensor Cap Life 6 months (cap expires 7 months after initialization)
Temperature Operating Temperature and Measurement Range -5 to 40°C (23 to 104°F), non-freezing
Temperature Accuracy 0.2°C (0.36°F) Temperature Resolution ± 0.02°C (± 0.04°F) Response Time To 90% in less than 30 minutes
Logger Memory 21,700 sets of DO and temperature measurements Logging Rate 1 minute to 18 hours Time Accuracy ± 1 minute per month at 25°C (77°F) Battery 3.6 V lithium battery; factory replaceable, life: 3 years (at 1 minute logging) Maximum Depth 100 m (328 ft) Dimensions 39.6 mm diameter x 266.7 mm (1.56 in diameter x 10.5 in) CE Compliant Yes http://www.onsetcomp.com
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