level liquid tank

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hello every one, i make to build [pi or pid] controller to controll the level of the water in the tank with diaphragm pump, and i like to suggest about board build ,and suggestion a bout the Ic and opamps. thanks very much

-- ahmad omar yousef al-huniti (ahm0002536@yahoo.com), August 14, 2003

Answers

Where the samples of ?

-- Arie Wahyu M (are_e84@yahoo.com), December 27, 2003.

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