(57) Abstract The 1st liquid (22) it measures with the 2nd liquid (24) at least and the device in order to mix has the tank (12) which possesses the mixed chamber (12M), 1st source (22) of the liquid and of 2nd source (24) 1st supply line (28A and 30A) and the 2nd supply line (28B and 30B) is jointed to the mixed chamber from each. The large control valve (32 and 36) is laid out in each of the 1st supply line (28A and 30A), the small control valve (34 and 38) is laid out in each of the 2nd supply line (28B and 30B). The non-contact detector (44) measures the total capacity of the liquid which exists inside the mixed chamber. Continuing responding to the output signal from of the detector (44) which displays the total capacity inside the mixed chamber (12M) which was measured with the detector (44), be able to operate the controller (48), you follow to specified sequence, each one from 2nd source operate the large control valve (32 and 36) in the 1st and 2nd supply line and the small control valve (34 and 38) from 1st source.
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