Onset HOBO Dissolved Oxygen Logger
Features
- Affordable, high performance dissolved oxygen (DO) monitoring with 0.2 mg/L accuracy
- Optical DO sensor technology for long-lasting calibration with less maintenance
- Requires HOBOware Pro Software and optic base station or waterproof shuttle
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The Onset HOBO U26 Dissolved Oxygen Logger measures and records oxygen concentrations in lakes, streams, rivers, estuaries, and coastal waters. The affordable and precise HOBO U26 data logger is recommended for aquatic biology and hydrology research projects. The Onset U26 Dissolved Oxygen Logger is the ideal tool for environmental impact studies as well as ecological and oceanographic research in freshwater and saltwater environments.
Rugged Dissolved Oxygen Technology
The HOBO Dissolved Oxygen logger is a standalone logger that uses RDO Basic Technology to measure dissolved oxygen (DO). The logger has an optical sensor that provides 0.2 mg/L accuracy. The logger also features an easily replaceable sensor cap and an integrated temperature sensor. Using the data offloaded from the Onset HOBO U26 logger, the HOBOware Dissolved Oxygen Assistant can calculate percent saturation and salinity-adjusted DO concentration as well as correct for measurement drift from fouling (additional meter or logger measurements required).
| 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 | ||
| Temperature Measurement/Operating 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 (64 KB total memory) | |
| Logging Rate: | 1 minute to 18 hours | |
| Time Accuracy: | ±1 minute per month at 0 to 50°C (32 to 122°F) | |
| Battery: | 3.6 V lithium battery; factory replaceable | |
| Battery Life: | 3 years (at 5 minute logging) | |
| Download Type: | Optical | |
| Depth Rating: | 100 m (328 ft) | |
| Buoyancy: | Salt water: 13 g (0.46 oz) negative | Fresh water: 20 g (0.71 oz) negative | |
| Wetted Materials: | Black Delrin®, PVC, EPDM o-rings, silicone bronze screws; rated for saltwater use | |
| Size: | 39.6 mm diameter x 266.7 mm length (1.56 x 10.5 inches) | |
| Weight: | 272.4 g (9.61 oz) | |
| Environmental Rating: | IP68 | |
- HOBO U26-001 Dissolved Oxygen Data Logger
- Dissolved oxygen sensor cap
- Protective guard
- Calibration boot and sponge
Select Options
In The News
Monitoring and Facilitating Habitat Restoration Efforts in the Great Lakes
While human infrastructure, urbanization, and industrialization have advanced human societies, the natural environment has suffered due to constructed impediments and deteriorating architecture. In order to combat this degradation, habitat restoration programs across the US work to remove impairments and improve damaged waterways. [caption id="attachment_39162" align="aligncenter" width="940"] Barge electrofishing by state and federal employees prior to habitat restoration on Wiscoy Creek which is a tributary to the Genesee River. (Credit Thomas Hoffman)[/caption] Habitat Restoration Efforts in the Great Lakes Tom Hoffman, aquatic habitat restoration biologist in the Lower Great Lakes basin, directs restoration efforts within tributaries to Lake Erie, Lake Ontario, and the St.
Read More
Sustainable Fishing in Alaska: Protecting the Salmon Capital of the World through Research
In the far north, the Alaska Peninsula stretches away from the Last Frontier into the Pacific Ocean. A narrow strip of land dotted with freshwater lakes and intruded upon by ocean inlets–this unique region is intimately connected with the surrounding water. Nestled halfway down the peninsula's southern coast are the small villages of Chignik. The area has historically been home to the Aleut people and has been heavily reliant on fishing for centuries. Home to commercial and subsistence fishing today, Chignik continues to rely upon the salmon returns to the surrounding villages, which are supported by scientists working tirelessly to understand and steward these fish populations.
Read More
NexSens X3 Data Logger Review
Extreme environments meet extreme design with the NexSens X3 Data Logger . The new logger offers the latest in real-time monitoring technology with wireless communication, a large plug-and-play sensor library and ultra-low power consumption, all in a waterproof marine-grade housing. The X3 is built to handle harsh weather, floods, high winds and rough seas, and it stands alone; no additional protective housing needed. With an operating temperature that ranges from -40°C to 70°C, the logger can withstand arctic environments and extreme heat. A conformal coating on the internal circuit board isolates it from moisture and humidity.
Read More
