Global Patent Index - EP 0975955 A2

EP 0975955 A2 2000-02-02 - METHODS AND SYSTEMS FOR SENSING WATER IN LIQUIDS

Title (en)

METHODS AND SYSTEMS FOR SENSING WATER IN LIQUIDS

Title (de)

VERFAHREN UND VORRICHTUNGEN ZUM NACHWEIS VON WASSER IN FLÜSSIGKEITEN

Title (fr)

PROCEDES ET SYSTEMES POUR DETECTER LA TENEUR EN EAU DE LIQUIDES

Publication

EP 0975955 A2 (EN)

Application

EP 98918185 A

Priority

  • US 9807460 W
  • US 4356697 P
  • US 6005897 P
  • US 7431598 P

Abstract (en)

[origin: WO9846984A2] The present invention provides a water sensing system for sensing the water content of a liquid and communicating water content information to an operator. Communicating water content information may include processing the sensed water content value and comparing the value to one or more threshold values to qualify the sensed value. According to another aspect, the water sensor includes isolated 4-20 mA interface outputs for use with external devices such as programmable logic controllers. According to another aspect, the present invention provides a water sensing system which senses a relative water content value and converts the relative water content value to an absolute water content value. According to another aspect, the present invention includes methods and circuitry for calibrating a water sensing system. According to yet another aspect, the present invention provides a liquid purification system to sense the water content of a liquid and remove water from the liquid using a purifier.

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

G01N 27/00

IPC 8 full level (invention and additional information)

G01N 27/02 (2006.01); G01N 33/28 (2006.01)

CPC (invention and additional information)

G01N 33/2847 (2013.01)

Citation (search report)

See references of WO 9846984A3

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 9846984 A2 19981022; WO 9846984 A3 19990211; CA 2286167 A1 19981022; EP 0975955 A2 20000202; JP 2002514303 A 20020514

INPADOC legal status


2010-04-28 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20091031

2002-05-15 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20020403

2000-02-02 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991021

2000-02-02 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB IT