Title:
MEASURING DEVICE FOR DETECTING A THRESHOLD VALUE
Document Type and Number:
WIPO Patent Application WO2005031268
Kind Code:
A3
Abstract:
The invention relates to a measuring device which is used to detect a threshold value and which monitors an analog measuring value to see if it exceeds the threshold value and if it is below the threshold value or another threshold value and which produces, a logical signal in accordance therewith which is used to indicate one of two possible states. The measuring device is configured in such a manner that it can automatically diagnose a possible defect in the measuring device caused by deterioration, i.e. through wear and tear. The measuring device detects the distance between the analog measuring values (S) and the nearest threshold value (S1, S2) in at least one of the two states and determines deterioration and the remainder of the service life of the measuring device.
Inventors:
FLAEMIG HARTMUT (DE)
KLOTZBACH MICHAEL (DE)
KLOTZBACH MICHAEL (DE)
Application Number:
PCT/EP2004/010405
Publication Date:
June 09, 2005
Filing Date:
September 16, 2004
Export Citation:
Assignee:
SIEMENS AG (DE)
FLAEMIG HARTMUT (DE)
KLOTZBACH MICHAEL (DE)
FLAEMIG HARTMUT (DE)
KLOTZBACH MICHAEL (DE)
International Classes:
G01F23/26; G01F25/00; (IPC1-7): G01F25/00; G01F23/26
Foreign References:
| US5756876A | 1998-05-26 | |||
| EP0501194A1 | 1992-09-02 | |||
| US5289011A | 1994-02-22 | |||
| US6318172B1 | 2001-11-20 | |||
| US5539670A | 1996-07-23 | |||
| US4156883A | 1979-05-29 | |||
| DE19525057C1 | 1997-02-13 | |||
| DE19536026A1 | 1996-05-23 | |||
| DE4305195C1 | 1994-06-30 |
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