Abstract: A method for operating a water softening plant (1) having: an automatically adjustable blending device (9a, 9a?, 9a?) for mixing a blended water flow V(t)blended comprising a first softened partial flow V(t)part1soft and a second partial flow V(t)part2untreated which carries untreated water, and having an electronic control device (11), the control device (11) controlling the adjustment position of the blending device (9a, 9a?, 9a?) by means of one or more experimentally determined current measurement variables in such a manner that the water hardness in the blended water flow V(t)blended is adjusted to a predetermined desired value (SW), the blending device (9a, 9a?, 9a?) supplying one or more water removal stations (50, 50?, 50?) with blended water, is characterized in that the desired value (SW) is predetermined by a setting of the one or more water removal stations (50, 50?, 50?), and in that the setting of the one or more water removal stations (50, 50?, 50?) is transmitted to the control device (

Abstract: A control unit for a softening device, comprising a primary inlet for untreated water, a primary outlet for blended water, a sensor for determining the water hardness of the untreated water WHraw, or the blended water WHblend, a secondary outlet, a secondary inlet, a bypass line, a blending means which can be automatically adjusted for mixing a blended water flow Vblend(t) from a first partial flow (V(t)part1soft of the secondary inlet and a second partial flow V(t)part2raw of the bypass line, and an electronic control means, wherein the control means is designed to readjust the adjustment position of the blending means by means of the determined water hardness in such a fashion that the water hardness in the blended water flow Vblend(t) is adjusted to a predetermined desired value, enables partial softening of water on the basis of fully automatic blending, thereby utilizing already existing softening devices.

Abstract: A method for operating a water softening plant (1) having: an automatically adjustable blending device (9a, 9a?, 9a?) for mixing a blended water flow V(t)blended comprising a first softened partial flow V(t)part1soft and a second partial flow V(t)part2untreated which carries untreated water, and having an electronic control device (11), the control device (11) controlling the adjustment position of the blending device (9a, 9a?, 9a?) by means of one or more experimentally determined current measurement variables in such a manner that the water hardness in the blended water flow V(t)blended is adjusted to a predetermined desired value (SW), the blending device (9a, 9a?, 9a?) supplying one or more water removal stations (50, 50?, 50?) with blended water, is characterised in that the desired value (SW) is predetermined by a setting of the one or more water removal stations (50, 50?, 50?), and in that the setting of the one or more water removal stations (50, 50?, 50?) is transmitted to the control device (1

Abstract: A control unit (1, 1a) for a softening device (2), comprising a primary inlet (4) for untreated water, a primary outlet (7) for blended water, a sensor for determining the water hardness of the untreated water WHraw or the blended water WHblend, a secondary outlet (5), a secondary inlet (6), a bypass line (9), a blending means which can be automatically adjusted for mixing a blended water flow Vblend(t) from a first partial flow (V(t)part1soft of the secondary inlet (6) and a second partial flow V(t)part2raw of the bypass line (9), and an electronic control means (11, 11a), wherein the control means (11, 11a) is designed to readjust the adjustment position of the blending means by means of the determined water hardness in such a fashion that the water hardness in the blended water flow Vblend(t) is adjusted to a predetermined desired value, is characterized in that the control unit (1, 1a) is designed in the form of an external control unit (1, 1a) for the softening device (2), wherein the control unit (1, 1a