Seametrics DO2 Dissolved Oxygen Logger
Features
- Measures dissolved oxygen and temperature
- Integrated data logger collects over 170,000 records
- Utilizes fluorescence sensor technology
Image | Part# | Product Description | Price | Stock | Order | |
---|---|---|---|---|---|---|
![]() | 2M11000 | DO2 optical dissolved oxygen & temperature logger, requires cable & external power | $3,309.00 | Drop ships from manufacturer |

Image | Part# | Product Description | Price | Stock | Order | |
---|---|---|---|---|---|---|
![]() | 7A21851 | Smart sensor USB communications kit, includes Aqua4Plus software | $328.00 | Drop ships from manufacturer | ||
![]() | 7A23562 | Non-vented PU standard cable with Kevlar, priced per foot | $2.28 | Drop ships from manufacturer | ||
![]() | 7A23662 | Non-vented PU standard cable with Kevlar, priced per meter | $7.49 | Drop ships from manufacturer | ||
![]() | 7A23554 | Non-vented PU economy cable with Mylar, priced per foot | $1.33 | Drop ships from manufacturer | ||
![]() | 7A23654 | Non-vented PU economy cable with Mylar, priced per meter | $4.35 | Drop ships from manufacturer | ||
![]() | 7A50517 | Cable strain relief kit, includes grip & chain lead | $61.00 | Drop ships from manufacturer | ||
![]() | 7A60865 | Auxiliary power box, 12 VDC, 2200mAh | $179.00 | Drop ships from manufacturer | ||
![]() | 7A22100 | Junction box, includes 2 bulkheads | $207.00 | Drop ships from manufacturer | ||
![]() | 7A23702 | Flying lead cable adapter, Modbus/SDI-12 output | $222.00 | Drop ships from manufacturer |




Seametrics' DO2 is an optical dissolved oxygen sensor with built-in data logger for unattended DO monitoring applications. Utilizing fluorescence of a stable, immobilized ruthenium-based film matrix, the sensor provides precision optical transmission and detection to measure oxygen concentration in the fluid outside of the sensor. Equipped with integrated data logger and Aqua4Plus software, this sensor provides convenient, high-quality data to the user.
- Sensor does not require water movement, flow, or frequent cleaning
- Does not require frequent calibration
- 1.66″ diameter—fits easily in 2-inch wells
- RS485 Modbus interface
- Measures dissolved oxygen and temperature
- Over 170,000 records in non-volatile memory
- Fluorescence sensor technology
- No membranes, fill solutions, replacement caps, or cartridges required
- Programmable warm-up time—easily set the warm-up time required by your equipment
- Includes Aqua4Plus control software for setting up flexible recording sequences, retrieving data, monitoring real-time data, and viewing collected data
In The News
Charles River Algal Blooms Stop Swimming and Launch a Floating Wetland
The Charles River used to be a swimming hotspot for Cambridge and Boston residents. 
 
 Decades of industrial pollution and nutrient runoff have degraded water quality and eliminated public swimming in the Lower Charles, but a movement is afoot to get Boston and Cambridge back in the water. One step toward the goal of a safely swimmable river—without the need to obtain a permit, as is now necessary—is detecting and managing the harmful algal blooms that appear on the river. 
 
 An experimental floating wetland and new research and analysis of water quality data that shows a possible effective detection system for algal blooms on the Charles River are two new steps toward the goal of safe, accessible swimming.
Read MoreHarnessing the Gulf Stream for Renewable Energy
The Gulf Stream, the massive western boundary current off the east coast of North America, moves water from the Gulf of Mexico north and west across the Atlantic Ocean. There’s a lot of energy in that much moving water and researchers are trying to put it to use. 
 
 Although the Gulf Stream’s path shifts (researchers say it acts like a wiggling garden hose), in a couple of spots, it stays relatively stable. At one such spot off the coast of Cape Hatteras, North Carolina, researchers have dropped moorings and research instruments to study the current with the eventual goal of harnessing it for renewable energy.
Read MoreBuoys in the time of Covid: Delays to important information
In early 2020, Michigan found itself facing one of the worst outbreaks of Covid-19 in the country. Though it’s close to second nature now, businesses, schools and governments were suddenly forced to conduct business without close contact. Universities and research institutions had to pause some scientific research. Whatever was able to continue slowed to a crawl. 
 
 Around the Great Lakes, a network of buoys monitors dozens of water quality parameters and lake conditions, reporting them in real time. This year, the monitoring season was cut a bit short as Covid-19 restrictions hit in the weeks before buoys were set to be deployed.
Read More