(19)

(11)

EP 4 771 344 A1

(12)

(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24786577.7 (22) Date of filing: 02.09.2024

(51) International Patent Classification (IPC):  G01F 1/84(2006.01) (52) Cooperative Patent Classification (CPC): G01F 1/8422; G01F 1/8427; G01F 1/8459 (86) International application number: PCT/NO2024/050192 (87) International publication number: WO 2025/048649 (06.03.2025 Gazette 2025/10)

(84) Designated Contracting States: 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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 01.09.2023 NO 20230935 (71) Applicant: CIGNUS INSTRUMENTS AS 0379 Oslo (NO)	(72) Inventors: SEEBERG, Bjørn Erik 0768 Oslo (NO) BREKKE, Harald 0884 Oslo (NO) (74) Representative: Bryn Aarflot AS  Patent Stortingsgata 8 0161 Oslo 0161 Oslo (NO)