24/06/2005 - Controller General of Patents, Designs, and Trade Marks

(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21)
(22) Date of filing of Application: 01/08/2003 (43)
Application No: 749/MUMNP/2003 A
Publication Date: 24/06/2005
(54) Title of the invention: A LEVEL-MEASURING DEVICE OPERATING WITH MICROWAVES
(51) International Classification : G 01 F 23/284 (71)
(31) Priority Document No. : 01103402.2
(32) Priority Date : 14/02/2001
(33) Name of priority country : EP
(86)
International Application
No.
: PCT/EP02/00033
Filing Date : 04/01/2002
(87) International Publication
No.
: WO 02/065066 A1
(61) Patent of addition to
Application No.
: NIL
Filed on : N.A.
(62) Divisional to Application
No.
: NIL
Filed on : N.A.
(57) Abstract:
The invention relates to a level-measuring device which functions
especially with microwave bursts and which is used to produce a
measuring value (XH) representing the level inside a container
(200). The level-measuring device comprises a transceiver (2)
which is used to produce an intermediate frequency signal (ZF),
which is influenced by the filling level, by means of a send signal
(S2) and a receive signal (E2). The filling-level measuring device
also comprises a converter element (1) which, when in operation, is
controlled by the send signal (S2) and which injects especially
pulsed transmission waves (S1) into the container (200), converting
reflected echo waves (E1) from the filling material (201) into the
receive signal (E2). The intermediate frequency signal (ZF) is fed to
a control unit (3) of the filling-level measuring device and digitally
stored in the form of a scanning sequence (AF) in a volatile data
memory (33), whereby amplitude and phase information is also
available upon determination of the filling level. The filling-level
measuring device is thus able to measure the filling level in a very
fast, highly accurate manner, down to the last millimeter.
(FIG.: 1)
Total Pages: 35.
(72)
Name of the Applicant:
ENDRESS+HAUSER GMBH+CO. KG
Address of the Applicant:
HAUPTSTRASSE 1,
79689 MAULBURG, GERMANY.
Name of the Inventors:
1. SPANKE DIETMAR
Filed U/S 5(2) before the
Patents (Amendment)
Ordinance, 2004: NO
The Patent Office Journal 24.06.2005 17820