HOBO U26-001 Dissolved Oxygen Data Logger

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HOBO U26-001 Dissolved Oxygen Data Logger

  • Vendor:Onset

Availability: Available Item
$1,000.00

Overview

An affordable, precise data logger that measures oxygen concentrations in lakes, streams, rivers, estuaries, and coastal waters. Recommended for aquatic biology and hydrology research projects, this easy-to-maintain logger uses RDO® Basic (Rugged Dissolved Oxygen) optical DO sensor technology.

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
  • HOBOware Pro's Dissolved Oxygen Assistant software corrects for measurement drift from fouling; provides salinity-adjusted DO concentrations and percent saturation
  • Optical USB interface for high-speed, reliable data offload
  • User-replaceable DO sensor cap eliminates need to send logger back to the factory to replace membrane

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