SG11201804010SA - In-situ pressure sensor bias determination apparatus, subsea sensor node apparatus and method of determining a bias of a pressure sensing apparatus - Google Patents

Abstract

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property - Organization International Bureau res.. 00) (43) International Publication Date .... ....... 18 May 2017 (18.05.2017) WIPO I PCT (10) WO International Publication Number 111111111111311111111111111111111111111111111111111111111111111111111311111111111111111 2017/081463 Al (51) International Patent Classification: DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, GO1L 27/00 (2006.01) HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, (21) International Application Number: MG MK, MN MW MX MY MZ NA NG NI NO NZ, PCT/GB2016/053508 OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, (22) International Filing Date: SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, 10 November 2016 (10.11.2016) TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (25) Filing Language: English (84) Designated States (unless otherwise indicated, for every (26) Publication Language: English kind of regional protection available): ARIPO (BW, GH, (30) Priority Data: GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, 1520075.1 13 November 2015 (13.11.2015) GB TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, (71) Applicant: SONARDYNE INTERNATIONAL LIM- DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, ITED [GB/GB]; Blackbushe Business Park, Yateley LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, Hampshire GU46 6GD (GB). SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, (72) Inventor: PARSONS, Adrian Bryan; 15 Lowlands Road, GW, KM, ML, MR, NE, SN, TD, TG). Blackwater, Camberley Surrey GU17 OAL (GB). Published: (74) Agent: LAUDENS; Blackwell House, Guildhall Yard, — with international search report (Art 21(3)) London EC2V SAE (GB). — before the expiration of the time limit for amending the (81) Designated States (unless otherwise indicated, for every claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, (54) Title: IN-SITU PRESSURE SENSOR BIAS DETERMINATION APPARATUS, SUBSEA SENSOR NODE APPARATUS AND METHOD OF DETERMINING A BIAS OF A PRESSURE SENSING APPARATUS 200 - - 424 - 1,.. , 430 413 }- 302 i 402 IT 1 I 412 428 t r A . , 426 _,_, 400 1432 \7 420 416 - n 422 1 r — 4181 11 414 .4t 408 406 ^ 410 en Ficure 4 4 11° 04 11 GC ie (57) : An in-situ pressure sensor bias determination apparatus (300) comprises a measurement pressure sensor (400), a ref- erence pressure sensor (402), an electronically controllable pressure adjustment device (406), and a fluid conduit network (410) hav - ing an ambient access port (412). The measurement pressure sensor (400) has a greater operating pressure range than the reference c:::, pressure sensor (402). The measurement pressure sensor (400), the reference pressure sensor (402) and the pressure adjustment ei device (406) are sealingly coupled to the fluid conduit network (410) so as to define a volume that is open only at the ambient access 0 port (412). An ambient isolation device (420) is arranged to isolate selectively the ambient access port (412) from the measurement P. pressure sensor (400), the reference pressure sensor (402) and the pressure adjustment device (406), thereby closing the open volume.