EP 2494343 A2 20120905 - SENSOR DEVICE
Title (en)
SENSOR DEVICE
Title (de)
SENSORVORRICHTUNG
Title (fr)
DISPOSITIF DE DÉTECTION
Publication
Application
Priority
- AT 17232009 A 20091030
- AT 20552009 A 20091230
- AT 2010000412 W 20101029
Abstract (en)
[origin: WO2011050381A1] A sensor for determining the humidity of materials, especially of gases, preferably of air humidity, comprises a support body (2) which is impinged upon by a substance (3) that reversibly absorbs humidity from the surroundings and/or gives it off to the surroundings, and at least two interspaced electrodes (4). According to the invention, the support body (2) is produced of or comprises an open-pored porous, air-humidity invariant, non-hygroscopic support material which has a high inner rigidity. At least the pores (21) of the support material comprising the substance (3) which reversibly or reproducibly absorbs and/or gives off humidity water from the material or the gas or air space that is brought in contact or that is in contact with the support material of the support body (2), are filled with or at least their surfaces or walls (22) are coated with preferably such an inorganic salt (3') in a dissolved, liquid, solid or crystalline form. The conductance and/or electrical permittivity of the said substance (3), especially of the salt (3'), functionally depends in a reproducible manner on the humidity of the material that is brought in contact or that is in contact with the support material of the support body (2) impinged with the humidity, especially the humidity of the surrounding air.
IPC 8 full level
G01N 27/22 (2006.01)
CPC (source: EP US)
A61B 5/441 (2013.01 - EP US); G01N 27/223 (2013.01 - EP US); A61B 2562/029 (2013.01 - EP US); G01N 33/46 (2013.01 - EP)
Citation (search report)
See references of WO 2011050382A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2011050381 A1 20110505; EP 2494343 A2 20120905; EP 2494344 A1 20120905; US 2012234078 A1 20120920; US 8869596 B2 20141028; WO 2011050382 A2 20110505; WO 2011050382 A3 20110707
DOCDB simple family (application)
AT 2010000411 W 20101029; AT 2010000412 W 20101029; EP 10787257 A 20101029; EP 10795907 A 20101029; US 201013505134 A 20101029