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HOBO Data Loggers
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    • By Measurement
      • CO2
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      • Shop All
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      • Sensors
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    • Take your monitoring to the next level with HOBO's MX800 Multiparameter Water Quality Data Loggers
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HOBO Conductivity U24 Data Loggers

Learn how to collect water quality data with this conductivity and temperature data logger. The HOBO Conductivity U24 Data Loggers is specially coded to provide a non-contact sensor. The electrodes are never in direct contact with water so they do not corrode. In addition, this logger sheds air bubbles for better accuracy measurements. This product also comes with durable housing, providing many years of use in freshwater or saltwater. Moreover, the battery lasts up to three years. Optical communications make it possible for researchers to offload data even when the logger is wet.

HOBO Data Logger Services

Certified by Onset for Battery Replacement and Servicing on a range of HOBO Data Loggers. Contact us for more information and pricing

  • OVERVIEW

    An accurate and cost-effective fresh water logger

    This high-accuracy conductivity data logger is a cost-effective way to collect water quality data. The HOBO U24 measures and records both conductivity and temperatures in streams, lakes, and other freshwater sources. This logger is recommended for monitoring aquifers for saltwater intrusion and road and agricultural runoff. This product’s open access to its sensor simplifies cleaning and maintenance. The HOBO U24’s non-contact sensor minimizes measurement errors related to drift. In addition, the logger features software-based drift compensation.

    • Non-contact sensor provides long life and less measurement drift
    • Provides easy access to sensor for cleaning and shedding air bubbles
    • HOBOware Pro software enables start/end-point calibration to compensate for any fouling and provides easy conversion to specific conductance and salinity
    • USB optical interface provides high-speed, reliable data offload in wet environments
    • Compatible with the HOBO Waterproof Shuttle for easy and reliable data retrieval and transport

    The HOBO U24 Conductivity data logger features a non-contact sensor with a Titanium Pentoxide coating. This coating prevents the sensor from coming in contact with the water, which in turn prevents tarnishing or corrosion associated with traditional electrode sensors. This sensor coating is also inert, enabling fouling to be easily wiped off the sensor.

    Important Information

    Requires HOBOware Pro software and either a U-DTW-1 Waterproof Shuttle or the Base-U-4 Optic USB Base Station for configuration and data offload. Please see Related Products below.

  • SPECIFICATIONS

     

    Measurements Actual Conductivity, Temperature, Specific Conductance at 25°C (calculated)
    Conductivity Calibrated
    Measurement Ranges
    Low Range: 0 to 1,000 μS/cm
    Full Range: 0 to 10,000 μS/cm
    Conductivity Calibrated
    Range – Temperature Range
    5° to 35°C (41° to 95°F)
    Conductivity Extended
    Ranges
    Low Range: 0 to 2,500 μS/cm
    Full Range: 0 to 15,000 μS/cm
    Temperature Measurement
    Range
    -2° to 36°C (28° to 97°F)
    Specific Conductance
    Accuracy (in Calibrated
    Range)
    Low Range: 3% of reading, or 5 μS/cm, and
    Full Range: 3% of reading, or 20 μS/cm, whichever is greater, using Conductivity Data Assistant and calibration measurements
    Conductivity Resolution 1 μS/cm
    Temperature Accuracy 0.1°C (0.2°F) at 25°C (77°F)
    Temperature Resolution 0.01°C (0.02°F)
    Conductivity Drift Less than 3% sensor drift per year, exclusive of drift from fouling
    Response Time 1 second to 90% of change (in water)
    Operating Range -2° to 36°C (28° to 97°F) – 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 3.6 Volt lithium battery
    Battery Life 3 years (at 1 minute logging)
    Maximum Depth 70 m (225 ft)
    Weight 193 g (6.82 oz), buoyancy in freshwater: -59.8 g (-2.11 oz)
    Size 3.18 cm diameter x 16.5 cm, with 6.3 mm mounting hole (1.25 in. diameter x 6.5 in., 0.25 in. hole)
    Wetted Housing materials Delrin®, epoxy, stainless steel retaining ring, polypropylene, Buna rubber O-ring, titanium pentoxide (inert coating over sensor)
    Environmental Rating IP68
    CE The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).
/ Shop / Products / HOBO Data Loggers / HOBO U24 - Conductivity/Salinity (Fresh Water) Data Logger

HOBO U24 – Conductivity/Salinity (Fresh Water) Data Logger

$2,286.00 ex GST

Measures and records conductivity and temperature in streams, lakes, and other freshwater sources; recommended for monitoring aquifers for saltwater intrusion and road and agricultural runoff.

Part Number: U24-001 Category: Products
Unit Price: $2,286.00

$2,286.00 ex GST

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Product Resources

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U24 Conductivity Loggers Datasheet

U24 Conductivity Logger (U24-001) User Manual

U24 Conductivity Logger Quick Start Guide

Choosing a Conductivity Logger White Paper

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