HOBO U26 Dissolved Oxygen Logger
The HOBO U26 Dissolved Oxygen Logger measures and records oxygen concentrations in lakes, streams, rivers, estuaries, and coastal waters.
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SCHEDULE DEMOKey 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
Overview
The 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 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 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
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U26 dissolved oxygen & temperature logger
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