On 10/29/2014 11:08 AM, Todd wrote:
Hi All,

Have a farmer for a customer with a large water
tank for watering his fields. He would like some
telemetry as to its state: full, half full, etc..
(Currently he uses the "There She Blows!" method
to see when the tank is full.)

Anyone have any suggestions? Be nice if it worked
over Modbus/TCP.

Many thanks,
-T

A friend answered this over on the home repair group

http://www.automationdirect.com