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Original question:

Measure Fluid Conductivity

LDC1000: Inductive or ohmic sensing for building a water conductivity meter

Markovicz
Prodigy 220 points

Part Number: LDC1000

Dear forum members,

I have checked two posts for building a water conductivity meter in this forum:

http://e2e.ti.com/support/amplifiers/f/14/t/598784

and

e2e.ti.com/.../328546

What do you think is the more practical way? Using the LDC1000 and a coil that I put in water? How is the actual conductivity calculated then? Or by passing a current?

Best,

Marco

  • 0
    TI__Genius 17440 points

    Hi Marco,

    We do not have any experience with using inductive sensing to calculate the conductivity of water, so we're unable to provide much help. It's certainly possible, but you would need to experiment with it on your own. I would suggest pursuing the other method if it is more defined.

    In addition, the LDC1000 is not recommended for new devices. I'd recommend using the newer LDC1612 instead if you decide to experiment with inductive sensing.

    Best Regards,

  • 0 in reply to Kristin Jones93
    Prodigy 220 points

    Thank you Kristin!

    Do you have another idea how I could realize the liquid conductivity sensing?

    Seems to be difficult - there's little to nothing on the web.

    Best,

    Marco

  • 0 in reply to Markovicz
    TI__Genius 17440 points

    Hi Marco,

    Unfortunately I don't have another suggestion for you. All of our inductive sensing experiments have used metal targets.

    Best Regards,