Onset HOBO Salt Water Conductivity Logger

The HOBO U24-002-C is a cost-effective data logger for measuring salinity, conductivity and temperature in saltwater environments with relatively small changes in salinity.

Features

  • Non-contact sensor provides long life
  • Provides easy access to sensor for cleaning and shedding air bubbles
  • Requires HOBOware Pro Software and optic base station or waterproof shuttle
Your Price $840.00
Stock More On The Way   
ImagePart#Product DescriptionPriceStockOrder
Onset HOBO Salt Water Conductivity LoggerU24-002-C HOBO salt water conductivity & temperature logger, 100 to 55,000 uS/cm range
$840.00
More On The Way  
Onset HOBO Salt Water Conductivity Logger
U24-002-C
HOBO salt water conductivity & temperature logger, 100 to 55,000 uS/cm range
More On The Way  
$840.00
ImagePart#Product DescriptionPriceStockOrder
Onset HOBO Optic USB Base Station BASE-U-4 HOBO optic USB base station
$140.00
3 Available
Onset HOBO Waterproof Shuttle U-DTW-1 HOBO waterproof shuttle
$280.00
3 Available
Onset HOBOware Pro Software BHW-PRO-DLD HOBOware Pro Software for Windows and Mac, download only
$75.00
Check Availability  
Onset HOBOware Pro Software BHW-PRO-USB HOBOware Pro Software for Windows and Mac, USB drive
$99.00
Check Availability  
Onset HOBOware Pro Software BHW-PRO-CD HOBOware Pro Software for Windows and Mac, CD
$99.00
Check Availability  
Onset U2X Water Logger Protective Housing HOUSING-U2X U2X water logger protective housing
$49.00
Check Availability  
HOBO optic USB base station
3 Available
$140.00
HOBO waterproof shuttle
3 Available
$280.00
HOBOware Pro Software for Windows and Mac, download only
Check Availability  
$75.00
Onset HOBOware Pro Software
BHW-PRO-USB
HOBOware Pro Software for Windows and Mac, USB drive
Check Availability  
$99.00
Onset HOBOware Pro Software
BHW-PRO-CD
HOBOware Pro Software for Windows and Mac, CD
Check Availability  
$99.00
U2X water logger protective housing
Check Availability  
$49.00

The HOBO U24-002-C is a cost-effective data logger for measuring salinity, conductivity and temperature in saltwater environments with relatively small changes in salinity (±5,000 μS/cm) such as saltwater bays, or to detect salinity events such as upwelling, rainstorm, and discharge events. Data from the logger can be used with data from the HOBO U26 Dissolved Oxygen Logger for monitoring percent dissolved oxygen saturation.

Note: When monitoring salinity in waters with more than ±5,000 uS/cm variation, refer to the accuracy shown in Plot C in the product specifications to determine if the accuracy is acceptable for your needs. Monthly field calibration readings are typically required to achieve the best accuracy.

Measurements: Actual Conductivity, Temperature, Specific Conductance at 25C (calculated), Salinity (calculated using PSS-78, the Practical Salinity Scale 1978)

Conductivity Measurement Range (Calibrated Range)
High range: 5000 to 55,000 uS/cm
Low range: 100 to 10,000 uS/cm
Over the range of 5 to 35C (41 to 95F)

Temperature Measurement Range: 5 to 35C (41 to 95F)

Specific Conductance Accuracy (in Calibrated Range using Conductivity Assistant and Calibration Measurements)
Low range: 3% of reading or 50 µS/cm, whichever is greater
High range: 5% of reading, in waters within a range of ±3,000 µS/cm; waters with greater variation can have substantially greater error (see Plot C)
Conductivity Resolution: 2 uS/cm
Temperature Accuracy: 0.1°C (0.2°F) at 25°C (77°F)
Temperature Resolution: 0.01°C (0.02°F)
Conductivity drift: Up to 12% sensor drift per month, exclusive of drift from fouling. Monthly start- and end-point calibration should be used with the HOBOware Conductivity Assistant to achieve the specified Specific Conductance accuracy.
Response time: 1 second to 90% of change (in water)
Operating range: -2 to 36C (28 to 97F) – non-freezing
Memory: 18,500 temperature and conductivity measurements when using one conductivity range; 11,500 sets of measurements when using both conductivity ranges (64 KB total memory)
Sample rate: 1 second to 18 hrs, fixed or multiple-rate sampling with up to 8 user-defined sampling intervals
Clock accuracy: +/- 1 minute per month
Battery life: 3 years (@ 1 min logging)
Maximum depth: 70 m (225')
Weight: 193 gm (6.82 ounces), buoyancy in freshwater: -59.8 gm (-2.11 ounces)
Size: 3.18 cm diameter x 16.5 cm, with 6.3 mm mounting hole (1.25" diameter x 6.5", ¼" hole)
Wetted housing materials: Delrin housing, epoxy, stainless steel retaining ring, polypropylene, Buna rubber O-ring, titanium pentoxide (inert coating over sensor) – all materials are suitable for long-term use in saltwater.

  • HOBO U24-002-C Conductivity Data Logger
  • Communications window protective cap
Questions & Answers
No Questions
Please, mind that only logged in users can submit questions

In The News

Monitoring Buoy Supports Nautical Archaeology

For as long as humans have inhabited Europe’s Atlantic coast, the ocean has been a great source of wonder and mystery. History is full of fascinating tales of epic endeavors, new discoveries of fearless explorers, fishing communities inextricably linked to the bounties of the sea, cultural interactions both peaceful and not, and voyages that went awry during monumental storms or simply due to bad luck. In the south of Spain, at the boundary between the Atlantic Ocean and the Mediterranean Sea, one such tale involves a long-lost merchant ship that went undiscovered from the 16th century until 1984. Believed to be carrying valuable goods from Italy, it sank just across from Gibraltar in the Algeciras Bay at a point called La Ballenera.

Read More

Staying Within Budget: Carbon Planning

While we usually concern ourselves with budgeting money or time, we should be thinking about another type of budget: the carbon budget. The carbon budget refers to the amount of carbon exchange, especially carbon dioxide, allotted on an annual basis to prevent the earth from reaching an increase of 2-degrees Celsius all over the globe. If a 2 degree increase does occur, global warming effects are expected to be catastrophic and irreversible. In order to know how close we are to reaching the carbon budget, an extensive knowledge of types of carbon input and their magnitudes, as well as their fluctuations over time, is needed.

Read More

IoT for Smarter Aquaculture

With aquaculture booming, IoT may be the future of the market. Fish have been farmed for millennia but only recently has the industry achieved such a vast scale. As overexploitation and climate change threaten wild fish stocks, aquaculture is increasingly framed as an alternative that can provide a low-carbon, healthy protein source. But, as the global population grows, the industry has the monumental task of meeting the increasing demand for seafood. In order to provide higher yields economically and sustainably, it is turning to the Internet of Things, or IoT. IoT refers to technology that pulls data from smart sensors to the Cloud and crunches it using analytic software tools, including artificial intelligence (AI), to monitor and improve efficiency or productivity.

Read More