Conductivity Meter | Water Conductivity Test | RS
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    Conductivity Meters

    Conductivity meters are devices for measuring the electrical conductivity in a solution. Distilled water is a poor electrical conductor and the substances or salts dissolved in the water determine how conductive the solution will be, as the number of dissolved ions increases, so does the solution's ability to carry an electrical charge. This electrical charge is what allows a conductivity meter to measure the conductance of a solution.

    How do they work?

    A conductivity meter consists of a probe that measures conductivity. A small electrical current flows between two electrodes set a certain distance apart, usually around 1 cm. If there is a high concentration of ions in the solution, the conductance is high, resulting in a fast current. The electrical current is slower and gives a smaller reading when a lower concentration of ions is present.

    They are commonly used in hydroponics, aquaculture and freshwater systems to monitor the number of nutrients, salts or impurities in the water. Conductivity meters must be calibrated to provide accurate results.

    Advantages

    • Available as a controller or an analyser to be implemented in process situations

    • Able to make a sampling measurement in less than one second

    Disadvantages

    • Cannot distinguish between different types of ions

    • Conductivity meters are temperature dependent, conductance increases approximately 2% per °C

    • Does not measure the number of ions in a solution directly

    Uses

    • Agriculture to measure the salinity levels of surface water and of soil samples

    • Wastewater treatment facility to measure the quality of water

    • Water conditioning (softener, demineralisation, aquariums, pollution control)

    20 Producten voor Conductivity Meters

    € 314,55
    Per stuk
    2000 μS/cm, 20 mS/cm, 100mS/cm
    1µS/cm
    ±0.5 %
    1 μS/cm
    AA
    >1000 hrs
    Battery
    108 x 54 x 28mm
    200g
    108mm
    54mm
    -105 °C
    € 367,97
    Per stuk
    19.99 mS/cm, 199.9 μS/cm
    0.1 μS/cm, 0.2 mS/cm
    ±2 %
    0.1 μS/cm, 0.01 mS/cm
    9V, PP3
    -
    Battery
    72 x 32 x 180mm
    -
    180mm
    72mm
    -
    Extech
    1999µS/cm
    0µS/cm
    ±1 %FS
    1 μS/cm
    -
    -
    -
    -
    -
    -
    -
    -
    Hanna Instruments
    1999µS/cm
    0µS/cm
    ±2 %
    1 μS/cm
    Button Cell (1.5 V) x 4
    200 h
    Battery
    175 x 41 x 23mm
    95g
    23mm
    175mm
    +50°C
    Hanna Instruments
    19.99mS/cm
    -
    ±2 %
    0.01 mS/cm
    Button Cell (1.5 V) x 4
    200 h
    Battery
    175 x 41 x 23mm
    95g
    23mm
    175mm
    +50°C
    Hanna Instruments
    20mS/cm
    0mS/cm
    ±2 %
    0.01 mS/cm
    Button Cell (1.5 V) x 4
    100 h
    Battery
    163 x 40 x 26mm
    100g
    26mm
    163mm
    -
    Hanna Instruments
    3999µS/cm
    0µS/cm
    -
    1 μS/cm
    Button Cell (1.5 V) x 4
    100 h
    Battery
    163 x 40 x 26mm
    100g
    26mm
    163mm
    -
    Hanna Instruments
    20mS/cm
    0mS/cm
    ±2 %
    1 μS/cm
    AAA
    500 h
    Battery
    143 x 80 x 38mm
    320g
    38mm
    143mm
    +60°C
    Hanna Instruments
    3999µS/cm
    0µS/cm
    ±2 %
    1 μS/cm
    AAA
    500 h
    Battery
    143 x 80 x 38mm
    320g
    38mm
    143mm
    +60°C
    Jumo
    1mS/cm
    1µS/cm
    -
    -
    -
    -
    -
    -
    -
    143mm
    -
    -
    Georg Fischer
    100µS/cm
    0.055µS/cm
    ±2 %
    -
    -
    -
    -
    -
    -
    -
    152mm
    -
    Jumo
    10µS/cm
    0.05µS/cm
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Hanna Instruments
    19.99mS/cm
    1µS/cm
    ±2 %
    0.01 mS/cm
    CR2032
    200 h
    Battery
    175 x 41 x 23mm
    95g
    23mm
    175mm
    +50°C
    Hanna Instruments
    99µS/cm
    0µS/cm
    ±2 %
    0.1 μS/cm
    Button Cell (1.5 V) x 4
    250 h
    Battery
    175 x 41 x 23mm
    95g
    23mm
    175mm
    +50°C
    Chauvin Arnoux
    500mS/cm
    0.05µS/cm
    -
    0.001 → 0.1 μS/cm
    AA Alkaline
    300 h
    Battery
    54 x 127 x 211mm
    600g
    211mm
    54mm
    +120°C
    Extech
    19.99mS/cm
    2mS/cm
    ±2 %FS
    0.1 μS/cm
    -
    -
    -
    -
    -
    -
    -
    -
    Extech
    1999µS/cm
    200µS/cm
    ±2 %
    1 μS/cm
    -
    -
    -
    -
    -
    -
    -
    -
    Georg Fischer
    10mS/cm
    10µS/cm
    ±2 %
    -
    -
    -
    -
    -
    -
    -
    152mm
    -
    Georg Fischer
    1000µS/cm
    1µS/cm
    ±2 %
    -
    -
    -
    -
    -
    -
    -
    152mm
    -
    Extech
    2000µS/cm
    -
    ±2 %
    1 μS/cm
    -
    -
    -
    -
    -
    -
    -
    -
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