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Long range water level sensing (~7-10m)

Other Parts Discussed in Thread: TDC1000, PGA460

Hi,

I want to know what product to measure water level up to 10m (7m typical).

I was initially thinking to TDC1000 range of product but seems to be limited to max 1.5m.

The design would be to have a floating device, embedding the sensor measuring the water depth, and potentially the above free air.

The TOF piezo solution was appealing, as it could be fixed inside the device, beaming the signal in a self contained waterproof enclosure.

Thanks for any indication of possible solutions