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1. (WO2018085987) UNIPOLAR RESISTIVE LADDER SENSOR
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Pub. No.: WO/2018/085987 International Application No.: PCT/CN2016/105058
Publication Date: 17.05.2018 International Filing Date: 08.11.2016
IPC:
G01F 23/72 (2006.01)
G PHYSICS
01
MEASURING; TESTING
F
MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
23
Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
30
by floats
64
of the free float type
72
using magnetically actuated indicating means
Applicants:
HAMLIN ELECTRONICS (SUZHOU) CO. LTD. [CN/CN]; 6 Xinghai Street, Suzhou Industrial Park Suzhou, Jiangsu 215021, CN
Inventors:
KNAPP, Stephen E.; US
ANASTASIADIS, Loannis; GB
XIE, Bens; CN
Agent:
CCPIT PATENT AND TRADEMARK LAW OFFICE; 8th Floor, Vantone New World Plaza, 2 Fuchengmenwai Street, Xicheng District Beijing 100037, CN
Priority Data:
Title (EN) UNIPOLAR RESISTIVE LADDER SENSOR
(FR) CAPTEUR D'ÉCHELLE DE RÉSISTANCE UNIPOLAIRE
Abstract:
(EN) A unipolar resistive ladder fluid-level sensor is provided. The sensor may include a tube immersed in a fluid, the tube containing a plurality of unipolar switches, and a float concentrically surrounding the tube. The float is configured to float in the fluid and to move relative to the tube in an axial direction as a height of the fluid level changes. The fluid-level sensor may further include a permanent magnet coupled to the float, wherein the plurality of unipolar switches are responsive to a magnetic field produced by the permanent magnet, and wherein the permanent magnet is one of: radially magnetized, and axially magnetized. In some approaches, the unipolar sensor is either a south-pole or north-pole activated sensor. In some approaches, at least one of the unipolar switches changes position in response to a negative magnetic field in an activation range of less than 1.0 millimeter.
(FR) L'invention concerne un capteur de niveau de fluide d'échelle de résistance unipolaire. Le capteur peut comprendre un tube immergé dans un fluide, le tube contenant une pluralité de commutateurs unipolaires, et un flotteur entourant de manière concentrique le tube. Le flotteur est conçu pour flotter dans le fluide et pour se déplacer par rapport au tube dans une direction axiale à mesure que la hauteur du niveau de fluide change. Le capteur de niveau de fluide peut en outre comprendre un aimant permanent couplé au flotteur, la pluralité de commutateurs unipolaires étant sensible à un champ magnétique produit par l'aimant permanent, et l'aimant permanent étant soit magnétisé radialement, soit magnétisé axialement. Dans certaines approches, le capteur unipolaire est un capteur activé de pôle sud ou de pôle nord. Dans certaines approches, au moins l'un des commutateurs unipolaires change de position en réponse à un champ magnétique négatif dans une plage d'activation inférieure à 1,0 millimètre.
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Designated States: 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, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, 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, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)