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Hobo Monitoring Systems

Hobo® | Model U26-001 | Dissolved Oxygen Logger

Hobo® | Model U26-001 | Dissolved Oxygen Logger

Regular price $1,698.89
Regular price Sale price $1,698.89
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  • Precision dissolved oxygen logger for lakes, streams, rivers, estuaries, and coastal waters.
  • Records up to 21,700 sets of dissolved oxygen and temperature measurements.
  • Utilizes optical sensor technology for long-lasting calibration and minimal maintenance.
  • Optical USB interface for high-speed, reliable data offload.
  • Includes dissolved oxygen sensor cap, protective guard, and calibration boot.
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Product Description

Hobo® | Model U26-001 | Dissolved Oxygen Logger 

DESCRIPTION

The HOBO® Dissolved Oxygen Logger Model U26-001 is a high-precision, self-contained data logger designed for aquatic monitoring in diverse water environments, including lakes, streams, rivers, and coastal waters. Essential for tracking oxygen concentrations, this logger supports aquatic biologists, hydrologists, and research professionals in monitoring aquatic health.

Featuring advanced optical dissolved oxygen sensor technology, the logger ensures long-lasting calibration with reduced maintenance requirements. Its memory can store up to 21,700 sets of dissolved oxygen and temperature measurements, making it ideal for long-term deployments. The logger is equipped with an optical USB interface for fast and reliable data offload and is compatible with the HOBO Waterproof Data Shuttle for efficient data retrieval.

Key Features

  • Advanced Optical Sensor: Delivers accurate and stable dissolved oxygen readings with minimal maintenance.
  • High Storage Capacity: Stores up to 21,700 data points for dissolved oxygen and temperature.
  • Reliable Data Offload: Optical USB interface ensures fast and efficient data transfer.
  • Long Deployment Life: Includes a 3-year battery life (at 5-minute logging intervals).
  • Durable Construction: Rated for saltwater use with a depth rating of up to 100 meters (328 feet).

Detailed Specification

Specification Details
Brand HOBO
Model Number (MPN) U26-001
UNSPSC Code 41115600
Dissolved Oxygen (DO)
Sensor Type Optical
Measurement Range 0 to 30 mg/L
Calibrated Range 0 to 20 mg/L; 0 to 35°C (32°F to 95°F)
Accuracy ±0.2 mg/L (up to 8 mg/L); ±0.5 mg/L (8–20 mg/L)
Resolution (DO) 0.02 mg/L
Response Time (DO) 90% in less than 2 minutes
DO Sensor Cap Life 6 months (expires 7 months after initialization)
Temperature
Measurement Range -5°C to 40°C (23°F to 104°F), non-freezing
Accuracy ±0.2°C (±0.36°F)
Resolution (Temperature) 0.02°C (0.04°F)
Response Time (Temperature) 90% in less than 30 minutes
Logger Specifications
Memory 21,700 sets of DO and temperature (64 KB total memory)
Logging Rate 1 minute to 18 hours
Battery Type 3.6 V lithium (factory replaceable)
Battery Life 3 years (at 5-minute logging intervals)
Depth Rating 100 m (328 ft)
Wetted Materials Black Delrin®, PVC, EPDM o-rings, silicone bronze screws
Dimensions 1.56” diameter x 10.5” length

In Package

  • 1 x HOBO® Dissolved Oxygen Logger Model U26-001
  • 1 x Dissolved Oxygen Sensor Cap
  • 1 x Protective Guard
  • 1 x Calibration Boot with Sponge

Manuals & Documents

General Warranty Info:

  • Ripping It Outdoors works closely with our manufacturers to supply and support your products warranty needs as best as possible!
  • The majority of products come with a manufacturer represented warranty against manufacturing defects for at least a 12 month period after the date of sale. 
  • Expendable components and "wear parts" including but not limited to blades, knives, teeth, oil, chain sprockets, skid shoes, knife mounting discs, and similar components are usually excluded from manufacturer warranties.
  • Please reach out to us for any specific warranty information needed about products and parts you can’t find!

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Shipping

General Shipping Info:

  • Instantly calculate shipping quotes to the lower 48 states by 1. adding this product to your cart, 2. click continue to the checkout page and 3. enter your shipping address to check rates. Contact us for quotes for shipping to Hawaii, Alaska, Canada, Mexico and Internationally.
  • Complimentary lift gate service on all freight shipments where it’s possible. We guarantee safe delivery!
  • Low shipping rates for customers. We have negotiated the best possible rates for customers from our trusted carriers (ODFL, ESTES, UPS, and FedEx).
  • Negotiate shipping rates if you think we can do better please reach out. Keep in mind some shipping rates also include assembly & configuration as well!

Customer Reviews

Overall rating: 4.7 / 5 from 110 reviews.

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