Automatic color-tone test device and automatic controlling system for dye liquor

An automatic color-tone test device comprising:

• a spectrophotometer in which a dye liquor introduction tube for introducing a controlling dye liquor, that is a measurement object, into a measurement cell is communication-connected to the measurement cell, while a dye liquor discharge tube for discharging the dye liquor after having passed through the measurement cell is communication-connected to the measurement such that a light transmission distance in the measurement cell can be variably set in compliance with a concentration level of the controlling dye liquor that is a measurement object;
• and
• a statistical test computer section for operation-judging whether or not the dye liquor's concentration and hue measured by the spectrophotometer agree with desired values;
• wherein an internal space of the measurement cell is divided into plural liquid-tight independent spaces mutually different in light transmission distance, and the dye liquor introduction tube and dye liquor discharge tube are respectively communication-connected to each liquid-tight independent space so that the controlling dye liquor is selectively fed to any one of the independent spaces in compliance with a concentration level of the controlling dye liquor that is a measurement object.