HOBO Dissolved Oxygen Data Logger

Data Loggers

HOBO Dissolved Oxygen Data Logger

  • Vendor:Onset

Availability: In Stock
$1,588.00
Qty Price
Buy 1 $1,588.00 ea
Buy 10 $1,468.90 ea

Overview

Measure oxygen concentrations in lakes, streams, rivers, estuaries, and coastal waters with the HOBO U26 Dissolved Oxygen Data Logger. This affordable and precise data logger is recommended for aquatic biology and hydrology research projects. The HOBO U26 uses RDO Basic (Rugged Dissolved Oxygen) optical DO sensor technology and is easy to maintain.

Includes:

  • U26-001 data logger
  • DO sensor cap
  • Protective Guard
  • Calibration Boot with sponge

Highlighted 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
  • Easy-to-replace DO sensor cap lasts six months

NOTE: For DO measurements in saltwater, an adjustment for salinity is required. For waters with small changes in salinity (<2 ppt), a salinity meter reading typically provides enough accuracy. For environments with greater salinity changes, we generally recommend the HOBO U24-002-C conductivity logger . If you need DO in Percent Saturation, barometric pressure data is required, which can be logged with a HOBO Water Level Data Logger.

In what environment does this data logger operate?

This data logger operates in an underwater environment.

What measurements does this data logger support?

The U26-001 data logger supports the following measurements: Dissolved Oxygen and Temperature

 

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)
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: 464 g (16.37 oz)
CE The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).
SOFTWARE 
Graphing & Analysis
  • BHW-PRO HOBOware Pro CD or USB Drive (USB Cable Included) Software 
  • BHW-PRO-DLD HOBOware Pro - Mac/Win (Download Only) Software 
COMMUNICATIONS
Data Offload - Base Stations - Shuttles - Couplers MAINTENANCE
Calibration Solution Coupler
  • COUPLER2-C Replacement Coupler for U20L, U22, U24, and U26 Data Loggers Replacement
Replacement Parts
  • U26-RDOB-1 Replacement DO Sensor Cap - U26-RDOB-1 Replacement
ACCESSORIES 
Antifouling Protective Guard
  • U26-GUARD-2 Antifouling Protective Guard - U26-GUARD-2 Replacement
Carrying Case Data Offload - Base Stations - Shuttles - Couplers
  • COUPLER2-B Replacement Coupler for U20 Water Level Data Loggers Replacement
Protective Enclosures Stainless Steel Cable/Crimps
  • CABLE-1-300 1/16" Stainless Steel Cable 300ft
  • CABLE-1-50 1/16" Stainless Steel Cable 50ft
  • CABLE-1-CRIMP Crimp Sleeve 12 Pack
Well Caps Compliance Certificates
  • COMPLIANCE CERT Compliance Certification