Global Patent Index - EP 1051258 A2

EP 1051258 A2 2000-11-15 - METHOD FOR OPERATING A WATER SOFTENING ION EXCHANGER SYSTEM WITH REGENERATIVE UNIT BY MEASURING IN SITU THE WATER HARDNESS BY MEANS OF AN ION-SELECTIVE SENSORY MECHANISM AND ARRANGEMENT FOR CARRYING OUT SUCH A METHOD

Title (en)

METHOD FOR OPERATING A WATER SOFTENING ION EXCHANGER SYSTEM WITH REGENERATIVE UNIT BY MEASURING IN SITU THE WATER HARDNESS BY MEANS OF AN ION-SELECTIVE SENSORY MECHANISM AND ARRANGEMENT FOR CARRYING OUT SUCH A METHOD

Title (de)

VERFAHREN ZUM BETREIBEN EINER WASSERENTHÄRTUNGS-IONENTAUSCHERANLAGE MIT REGENERATIONSEINHEIT DURCH IN SITU-MESSUNG DER WASSERRESTHÄRTE MITTELS IONENSELEKTIVER SENSORIK SOWIE ANORDNUNG ZUR DURCHFÜHRUNG EINES DERARTIGEN VERFAHRENS

Title (fr)

PROCEDE POUR EXPLOITER UNE INSTALLATION D'ADOUCISSEMENT DE L'EAU A ECHANGE D'IONS AVEC UNE UNITE DE REGENERATION PAR MESURE $I(IN SITU) DE LA DURETE RESIDUELLE DE L'EAU AU MOYEN D'UNE UNITE DE DETECTION IONOSENSIBLE

Publication

EP 1051258 A2 (DE)

Application

EP 99960996 A

Priority

  • DE 19854651 A
  • EP 9909079 W

Abstract (en)

[origin: DE19854651C1] In a process to operate a water softener, the unit is regenerated from time to time using in-situ measurements of the residual hardness using an ion-selective sensor. A minimum flow of process water is tapped from the softener through a valve to the sensor. A sensor process signal varies the rate at which process water is tapped from the ion-exchange section at the same time as the process water flows through the softener. The ion-selective sensor continually monitors the ion concentration in the tapped flow. Water softener regeneration is initiated if the ion concentration exceeds a certain pre-determined level. During periods when the process is inoperative, the tapped flow is interrupted, and a calibration fluid is fed to the sensor via the valve.

IPC 1-7 (main, further and additional classification)

B01J 49/00

IPC 8 full level (invention and additional information)

B01J 49/00 (2006.01); C02F 1/42 (2006.01); G01N 33/18 (2006.01)

CPC (invention and additional information)

C02F 1/42 (2013.01); B01J 49/85 (2017.01); G01N 33/1853 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19854651 C1 20000504; EP 1051258 A2 20001115; WO 0030750 A2 20000602; WO 0030750 A3 20000810

INPADOC legal status


2004-01-07 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030531

2000-11-15 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000705

2000-11-15 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE