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Kit for Aqueous Electrical...
GRAV-SENS-ECMETER-[D]
Kit for Aqueous Electrical Conductivity measurement
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This sensor is an "analog electrical conductivity meter" (in version V2) used to to measure the electrical conductivity of aqueous solution. Pure water is not a good electrical conductor where as dirty water (containing ions in the solution) will allow the current to flow more easily.
So a very low Electrical Conductivity indicates a high quality (pure) water. Such sensor is used in water culture, aquaculture, environmental water detection and other quality fields for aqueous solution.
Conductivity is the opposite of resistance. The conductivity is the ability of a material to carry the current (where the "resistance" do resist to the current flow). Higher is the conductivity, less the material do resists to the current flow.
Liquids can also conduct current but it depends on the impurities/electrolytes/ions present in the water. The conductivity is a important parameter of water quality because it can reflect the extent of electrolytes present in water. Good quality water (pure water), should not have lot of electrolytes/impurities in it. As such, good quality water should have low conductivity.
Here some typical conductivity
If you want to know more about the electrocal conductivity of solution, we may recommend to read "Conductivity of a solution" from Andy Connelly and "Conductivity (electrolytic)" from Wikipedia.
Important note: the electrical conductivity is sensitive to the temperature of the solution.
This new revision of the "analog electrical conductivity meter" improves the user experience and data precision. It can be used with 3 to 5v input voltage. The output signal is compatible with 5V and 3.3V microcontroler board (the output voltage stays within the range of 0 to 3.0 volts); The output signal is filtered by hardware to improve the stability; The excitation source use AC signal to reduce the polarisation effect on the probe (which improves the precision and life of the probe).
The software library uses two-point calibration method, and can automatically identify standard buffer solution, so simple and convenient.
With ECMeter, a microcontroler board (Arduino uno) and software library you can quickly achieve a electrical conductivity meter sensor without welding.
The key-features:
In order to ensure the measurement accuracy, it is strongly recommended to add a temperature sensor to the setup. Measuring the temperature will allows to perform a temperature compensation on the measured conductivity. DS18B20 waterproof temperature sensor can be used.
Signal Conversion Board (Transmitter) V2
Electrical Conductivity Probe
For each order, you will receive the probe kit made with: