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1. (WO2018146002) WATER SOFTENING DEVICE AND METHOD TO OPERATE A WATER SOFTENING DEVICE

Pub. No.:    WO/2018/146002    International Application No.:    PCT/EP2018/052571
Publication Date: Fri Aug 17 01:59:59 CEST 2018 International Filing Date: Fri Feb 02 00:59:59 CET 2018
IPC: C02F 1/00
C02F 1/42
B01J 47/024
Applicants: BWT AKTIENGESELLSCHAFT
Inventors: BALIDAS, Pierre
BRAND, Christian
JOHANN, Jürgen
PAVAN, Andrea
Title: WATER SOFTENING DEVICE AND METHOD TO OPERATE A WATER SOFTENING DEVICE
Abstract:
A water softening device (100) comprises a filter (105) which is configured to decrease hardness of a first stream of raw water to produce a second stream of water with decreased hardness, a first sensor (109) for measuring an electrical property of the first stream and a second sensor (110) for measuring an electrical property of the second stream. The ratio of the measured properties can be used as an indicator to estimate the exhaustion state of the filter.