Waterproof Data Loggers

HOBO waterproof data loggers are widely recognized as the industry standard for gathering and monitoring water data for months – even years – at a time. They can withstand a wide range of environmental conditions including temperature extremes, rushing rocky streams and ocean storms. Water temperature, water level, dissolved oxygen and fresh water conductivity models are available.


Results: 1 to 8 of 24
  • U20L-02

    The HOBO U20L-002 is a low-cost, research-grade water level data logger for continuously measuring water level and temperature in a wide range of underwater environments. It features 0.1% accuracy, a polypropylene housing for use in both fresh and salt water, and a non-vented design for convenient and hassle-free deployment.

    Add Extended warranty for $29.90/unit?

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    (this choice will apply to all existing U20L-02 in your cartquote request)
    $299

    x
    U20L-02 Data Logger

    The HOBO U20L-002 is a low-cost, research-grade water level data logger for continuously measuring water level and temperature in a wide range of underwater environments. It features 0.1% accuracy, a polypropylene housing for use in both fresh and salt water, and a non-vented design for convenient and hassle-free deployment.


    $299
    Add Extended warranty for $29.90/unit?

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    (this choice will apply to all existing U20L-02 in your cartquote request)
    Full Product Details
  • U20L-04

    The HOBO U20L-004 is a low-cost, research-grade water level data logger for continuously measuring water level and temperature in a wide range of underwater environments. It features 0.1% measurement accuracy, a polypropylene housing for use in both fresh and salt water, and a non-vented design for convenient and hassle-free deployment.

    Add Extended warranty for $29.90/unit?

    Yes No thanks

    (this choice will apply to all existing U20L-04 in your cartquote request)
    $299

    x
    U20L-04 Data Logger

    The HOBO U20L-004 is a low-cost, research-grade water level data logger for continuously measuring water level and temperature in a wide range of underwater environments. It features 0.1% measurement accuracy, a polypropylene housing for use in both fresh and salt water, and a non-vented design for convenient and hassle-free deployment.


    $299
    Add Extended warranty for $29.90/unit?

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    (this choice will apply to all existing U20L-04 in your cartquote request)
    Full Product Details
  • U20L-01

    The HOBO U20L-001 is a low-cost, research-grade water level data logger for continuously measuring water level and temperature in a wide range of underwater environments. It features 0.1% measurement accuracy, a polypropylene housing for use in both fresh and salt water, and a non-vented design for convenient and hassle-free deployment.

    Add Extended warranty for $29.90/unit?

    Yes No thanks

    (this choice will apply to all existing U20L-01 in your cartquote request)
    $299

    x
    U20L-01 Data Logger

    The HOBO U20L-001 is a low-cost, research-grade water level data logger for continuously measuring water level and temperature in a wide range of underwater environments. It features 0.1% measurement accuracy, a polypropylene housing for use in both fresh and salt water, and a non-vented design for convenient and hassle-free deployment.


    $299
    Add Extended warranty for $29.90/unit?

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    (this choice will apply to all existing U20L-01 in your cartquote request)
    Full Product Details
  • U20-001-02-Ti

    The HOBO Water Level Titanium is recommended for saltwater deployment for recording water levels and temperatures in wetlands and tidal areas. This data logger features high accuracy at a great price and HOBO ease-of-use, with no cumbersome vent tubes or desiccants to maintain.

    View how the HOBO Water Level Data Logger compares to the Competition.

    Add Extended warranty for $59.50/unit?

    Yes No thanks

    (this choice will apply to all existing U20-001-02-Ti in your cartquote request)
    $595

    x
    U20-001-02-Ti Data Logger

    The HOBO Water Level Titanium is recommended for saltwater deployment for recording water levels and temperatures in wetlands and tidal areas. This data logger features high accuracy at a great price and HOBO ease-of-use, with no cumbersome vent tubes or desiccants to maintain.

    View how the HOBO Water Level Data Logger compares to the Competition.


    $595
    Add Extended warranty for $59.50/unit?

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    (this choice will apply to all existing U20-001-02-Ti in your cartquote request)
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  • U26-001

    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.

    Add Extended warranty for $125.00/unit?

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    (this choice will apply to all existing U26-001 in your cartquote request)
    $1250

    x
    U26-001 Data Logger

    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.


    $1250
    Add Extended warranty for $125.00/unit?

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    (this choice will apply to all existing U26-001 in your cartquote request)
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  • The HOBO U12 Deep Ocean Water Temperature Data Logger is a single-channel water temperature logger with 12-bit resolution that can record up to 43,000 measurements. With its robust titanium housing, this logger is designed to withstand ocean extremes of depth and temperature.

    Add Extended warranty for $79.90/unit?

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    (this choice will apply to all existing U12-015-03 in your cartquote request)
    $799

    x
    U12-015-03 Data Logger

    The HOBO U12 Deep Ocean Water Temperature Data Logger is a single-channel water temperature logger with 12-bit resolution that can record up to 43,000 measurements. With its robust titanium housing, this logger is designed to withstand ocean extremes of depth and temperature.


    $799
    Add Extended warranty for $79.90/unit?

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    (this choice will apply to all existing U12-015-03 in your cartquote request)
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  • U24-002-C

    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. It can also be used to gather salinity data for salinity compensation of HOBO U26 Dissolved Oxygen logger data.

    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.

    Add Extended warranty for $75.00/unit?

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    (this choice will apply to all existing U24-002-C in your cartquote request)
    $750

    x
    U24-002-C Data 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 (±5,000 μS/cm) such as saltwater bays, or to detect salinity events such as upwelling, rainstorm, and discharge events. It can also be used to gather salinity data for salinity compensation of HOBO U26 Dissolved Oxygen logger data.

    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.


    $750
    Add Extended warranty for $75.00/unit?

    Yes No thanks

    (this choice will apply to all existing U24-002-C in your cartquote request)
    Full Product Details
  • U20-001-03-Ti

    The HOBO Water Level Titanium is recommended for saltwater deployment for recording water levels and temperatures in wetlands and tidal areas. This data logger features high accuracy at a great price and HOBO ease-of-use, with no cumbersome vent tubes or desiccants to maintain.

    View how the HOBO Water Level Data Logger compares to the Competition.

    Add Extended warranty for $59.50/unit?

    Yes No thanks

    (this choice will apply to all existing U20-001-03-Ti in your cartquote request)
    $595

    x
    U20-001-03-Ti Data Logger

    The HOBO Water Level Titanium is recommended for saltwater deployment for recording water levels and temperatures in wetlands and tidal areas. This data logger features high accuracy at a great price and HOBO ease-of-use, with no cumbersome vent tubes or desiccants to maintain.

    View how the HOBO Water Level Data Logger compares to the Competition.


    $595
    Add Extended warranty for $59.50/unit?

    Yes No thanks

    (this choice will apply to all existing U20-001-03-Ti in your cartquote request)
    Full Product Details

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