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Monitoring Solutions for Water, Indoor, Outdoor, & Agriculture
Measure salinity, conductivity and temperature in saltwater environments with slight changes in salinity (±5,000uS/cm) such as saltwater bays, or to detect salinity events such as upwelling, rainstorms, and discharge events. Easy sensor access faciltates cleaning and shedding of air bubbles.
Measure salinity, conductivity and temperature in saltwater environments with slight changes in salinity (±5,000uS/cm) such as saltwater bays, or to detect salinity events such as upwelling, rainstorms, and discharge events. Easy sensor access faciltates cleaning and shedding of air bubbles.
HOBO data loggers requires HOBOware software (USB interface cable included w/CD purchase) and a communications device. HOBOware Pro is required when using the U-DTW-1 Waterproof shuttle. 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.
Features
Applications
Supported Measurements
HOBOware
With the latest version of software (HOBOware 3.7.8), Optic Base Station and Waterproof Shuttle users will find much-improved communications methods.
For Mac users - Updating to apple's latest operating system (OS X 10.11.5) will remedy any communications issues you might have encountered with the HOBO U30 Weather Station and the Waterproof Shuttle.
HOBOmobile
HOBOmobile 1.5 for iOS can now push data to HOBOlink.com for free online data storage.
Download the Mobile App
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 41° to 95°F (5° to 35°C) | |
| Temperature Measurement Range | 41° to 95°F (5° to 35°C) |
| 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) |
| Resolution | |
| Conductivity | 2 uS/cm |
| Temperature | 0.02°F typical (0.01°C) |
Conductivity loggers, like Onset’s HOBO U24, are ideal for monitoring the impact on water resources from pollutants such as road salt, agricultural, and highway runoff.
Whether you are selecting a conductivity logger for the first time or have experience measuring conductivity, it is important to consider every aspect in order to determine which type of logger best suits your needs.
Surface and groundwater contamination is of great concern for biologists, environmental scientists, researchers, and water quality managers who assess the effects of natural and synthetic pollutants on water supplies. Below are the the five most important considerations in selecting and deploying a conductivity logger, namely:
For a full run-down on this crucial selection process, please read the full white paper here.
It is important to determine if the conductivity logger’s measurement range will cover the range of conductivity or salinity at your site and that the accuracy is sufficient in that range.
Conductivity loggers must be able to offset the effects of drift and fouling from algae or sediment buildup on the sensor. How the logger handles these issues is just as important as absolute accuracy. Some questions to ask manufacturers include:
As with all loggers, an important factor when selecting a conductivity logger is how easy it will be to deploy and then subsequently retrieve the data.
The accompanying software should also be considered when choosing a logger. The software in general should be highly intuitive so that you may quickly become proficient in configuring parameters, launching the logger, and offloading data.
As with any purchase, an important consideration is how much will the logger cost. Conductivity loggers are becoming increasingly less expensive, with some below $800. However, the cost of ownership does not pertain just to the actual purchase price of the logger, but also to its time- and hence money-saving features.
As the demand for water conductivity monitoring grows, so too will the need for instruments that make the process faster, cheaper, and more accurate. Underwater data loggers are the instruments of choice among researchers and resource managers because of their 24/7 operation, high accuracy, ease-of-use, and computer-based analysis and reporting capabilities.
For even more on this, read the full PDF!
Click on a category to view a selection of compatible accessories with the Onset HOBO U24-002-C Salt Water Conductivity/Salinity Data Logger.
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 41° to 95°F (5° to 35°C) | |
| Temperature Measurement Range | 41° to 95°F (5° to 35°C) |
| 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) |
| Resolution | |
| Conductivity | 2 uS/cm |
| Temperature | 0.02°F typical (0.01°C) |
Conductivity loggers, like Onset’s HOBO U24, are ideal for monitoring the impact on water resources from pollutants such as road salt, agricultural, and highway runoff.
Whether you are selecting a conductivity logger for the first time or have experience measuring conductivity, it is important to consider every aspect in order to determine which type of logger best suits your needs.
Surface and groundwater contamination is of great concern for biologists, environmental scientists, researchers, and water quality managers who assess the effects of natural and synthetic pollutants on water supplies. Below are the the five most important considerations in selecting and deploying a conductivity logger, namely:
For a full run-down on this crucial selection process, please read the full white paper here.
It is important to determine if the conductivity logger’s measurement range will cover the range of conductivity or salinity at your site and that the accuracy is sufficient in that range.
Conductivity loggers must be able to offset the effects of drift and fouling from algae or sediment buildup on the sensor. How the logger handles these issues is just as important as absolute accuracy. Some questions to ask manufacturers include:
As with all loggers, an important factor when selecting a conductivity logger is how easy it will be to deploy and then subsequently retrieve the data.
The accompanying software should also be considered when choosing a logger. The software in general should be highly intuitive so that you may quickly become proficient in configuring parameters, launching the logger, and offloading data.
As with any purchase, an important consideration is how much will the logger cost. Conductivity loggers are becoming increasingly less expensive, with some below $800. However, the cost of ownership does not pertain just to the actual purchase price of the logger, but also to its time- and hence money-saving features.
As the demand for water conductivity monitoring grows, so too will the need for instruments that make the process faster, cheaper, and more accurate. Underwater data loggers are the instruments of choice among researchers and resource managers because of their 24/7 operation, high accuracy, ease-of-use, and computer-based analysis and reporting capabilities.
For even more on this, read the full PDF!
Click on a category to view a selection of compatible accessories with the Onset HOBO U24-002-C Salt Water Conductivity/Salinity Data Logger.
