Looking for right sensor

[sujit_51]

Hello Freinds,
I am looking for a sensor which can sense the level of liquid (both transparent/coloured) from a distance.

Actually I want to control the level of Liquid using this sensor . Sensor should be noncontact type.

Thanks.

Sujit

 

[Roff]

Hello Freinds,
I am looking for a sensor which can sense the level of liquid (both transparent/coloured) from a distance.

Actually I want to control the level of Liquid using this sensor . Sensor should be noncontact type.

Thanks.

Sujit

What is the distance? A millimeter? A kilometer?

 

[panic mode]

use capacitive proxy, it doesn't care about color.

 

[Oznog]

What liquid?

Capacitive sensors work are sort of noncontact, but the distance must be quite miniscule. The types of liquids you can do this way are limited. But otherwise you may be looking at a "machine vision" solution, very complicated. Actually not a bad thing to become an expert in, there's a huge demand for advanced machine vision solutions in automated manufacture.

 

[bmcculla]

Ultrasound range finders are another popular way to measure liquid level.

 

[sujit_51]

Hello Freinds,
I am looking for a sensor which can sense the level of liquid (both transparent/coloured) from a distance.

Actually I want to control the level of Liquid using this sensor . Sensor should be noncontact type.

Thanks.

Sujit

What is the distance? A millimeter? A kilometer?

Distance should not be more than 20 cm but minimum distance should be around 10 cm.

 

[jnegowski]

Hi

I have used capacitive proxy sensors to measure the height of a liquid in a buck and then shut off a fill valve in an automated bucketing system Turk makes some nice ones my design worked over inches and through a plastic bucket.
joe