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1. WO1995030891 - DEVICE FOR SENSING AND INDICATING THE STATE OF A FLOWING MEDIUM

Publication Number WO/1995/030891
Publication Date 16.11.1995
International Application No. PCT/SE1995/000495
International Filing Date 05.05.1995
Chapter 2 Demand Filed 06.12.1995
IPC
B60T 17/22 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
17Component parts, details, or accessories of brake systems not covered by groups B60T8/, B60T13/ or B60T15/170
18Safety devices; Monitoring
22Devices for monitoring or checking brake systems; Signal devices
G01N 27/06 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
02by investigating impedance
04by investigating resistance
06of a liquid
G01N 33/28 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
26Oils; Viscous liquids; Paints; Inks
28Oils
CPC
B60T 17/222
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL
17Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
18Safety devices; Monitoring
22Devices for monitoring or checking brake systems; Signal devices
221Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
222by filling or bleeding of hydraulic systems
G01N 27/06
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
02by investigating impedance
04by investigating resistance
06of a liquid
G01N 33/2847
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
26Oils; viscous liquids; paints; inks
28Oils ; , i.e. hydrocarbon liquids
2835specific substances contained in the oil or fuel
2847Water in oil
Applicants
  • NYBERG, Bo, Erik [SE]/[CH] (AllExceptUS)
  • GUSTAFSSON, Morgan [SE]/[CH] (UsOnly)
Inventors
  • GUSTAFSSON, Morgan
Agents
  • HELLBORG, Torild
Priority Data
9401587-206.05.1994SE
Publication Language English (en)
Filing Language Swedish (SV)
Designated States
Title
(EN) DEVICE FOR SENSING AND INDICATING THE STATE OF A FLOWING MEDIUM
(FR) DISPOSITIF D'EVALUATION ET D'INDICATION DE L'ETAT D'UN MILIEU FLUIDE
Abstract
(EN) The invention relates to a device for sensing and indicating the state of a medium in a conduit. The device comprises a sensor means (10) for sensing the value of a parameter of the medium in the conduit (8), and an indicator means (13) which is coupled to the sensor means and is intended to provide an indication which is dependent on said sensed value. According to the invention, the sensor means (10) is coupled into the conduit (8) and is provided with a channel which, when coupled, is a portion of the conduit. The sensor means (10) has two electrodes insulated from each other, which extend into the channel. The indicator means is provided with, or is coupled to, a current source for applying a voltage between the electrodes of the sensor means (10) and is arranged to provide an optical and/or acoustic signal when the resistance of the medium lies beyond a predetermined threshold value.
(FR) L'invention concerne un dispositif d'évaluation et d'indication de l'état d'un milieu dans un conduit. Le dispositif comporte un capteur (10) conçu pour déterminer la valeur d'un paramètre du milieu dans le conduit (8), et un indicateur (13) couplé au capteur et conçu pour produire une indication en fonction de ladite valeur mesurée. Le capteur (10) selon l'invention est couplé dans le conduit (8) et doté d'un canal qui, lorsqu'il est couplé, constitue une partie du conduit. Le capteur (10) comprend deux électrodes isolées l'une de l'autre qui s'étendent dans le canal. L'indicateur est couplé à ou est doté d'une source de courant permettant d'appliquer une tension entre les électrodes et le capteur (10), et est conçu pour produire un signal optique et/ou acoustique lorsque la résistance du milieu dépasse une valeur seuil prédéterminée.
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