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1. (WO2018007786) TURBIDITY SENSOR AND METHOD FOR MEASURING TURBIDITY
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Pub. No.: WO/2018/007786 International Application No.: PCT/GB2017/051838
Publication Date: 11.01.2018 International Filing Date: 23.06.2017
IPC:
G01N 21/27 (2006.01) ,G01N 21/47 (2006.01) ,G01N 21/53 (2006.01) ,G01N 21/85 (2006.01) ,G01N 15/06 (2006.01)
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
25
Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
27
using photo-electric detection
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
47
Scattering, i.e. diffuse reflection
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
47
Scattering, i.e. diffuse reflection
49
within a body or fluid
53
within a flowing fluid, e.g. smoke
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
84
Systems specially adapted for particular applications
85
Investigating moving fluids or granular solids
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15
Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
06
Investigating concentration of particle suspensions
Applicants: PROCESS INSTRUMENTS (UK) LTD[GB/GB]; Process House 14 March Street Burnley Lancashire BB12 0BT, GB
Inventors: RIDING, Mike; GB
STRACEY, Craig; GB
Agent: APPLEYARD LEES IP LLP; 15 Clare Road Halifax Yorkshire HX1 2HY, GB
Priority Data:
1611650.104.07.2016GB
Title (EN) TURBIDITY SENSOR AND METHOD FOR MEASURING TURBIDITY
(FR) CAPTEUR DE TURBIDITÉ ET PROCÉDÉ DE MESURE DE TURBIDITÉ
Abstract:
(EN) Sensor and Measurement Method A turbidity sensor and method of measuring turbidity is provided. The turbidity sensor (100) comprises first and second optical detectors for detecting a respective optical response of each optical signal. The first optical detector (20) may be arranged in direct view of the emitter (10) and the second optical detector (30) may be arranged in indirect view of the emitter (10). The two detectors collect light emitted from the emitter (10) when directed through a fluid sample during two optical tests run in very close succession. Firstly, a control sample is illuminated to determine a calibration factor for the control sample with known turbidity. Then, the calibration factor is used to determine the turbidity of a fluid sample with unknown turbidity. Advantageously, background radiation during the data collection process is ignored because the transient behaviour during each optical test is negligible. The approach is more convenient over known turbidity sensors and measurement methods, particularly in light of the calibration step.
(FR) La présente invention concerne un capteur de turbidité et un procédé de mesure de turbidité. Le capteur de turbidité (100) comprend des premier et second détecteurs optiques pour détecter une réponse optique respective de chaque signal optique. Le premier détecteur optique (20) peut être disposé en vue directe de l'émetteur (10) et le second détecteur optique (30) peut être disposé en vue indirecte de l'émetteur (10). Les deux détecteurs captent la lumière émise par l'émetteur (10) lorsqu'ils sont dirigés à travers un échantillon de fluide pendant deux tests optiques exécutés en succession très proche. Tout d'abord, un échantillon témoin est éclairé de manière à déterminer un facteur d'étalonnage pour l'échantillon témoin ayant une turbidité connue. Ensuite, le facteur d'étalonnage est utilisé de manière à déterminer la turbidité d'un échantillon de fluide ayant une turbidité inconnue. Avantageusement, un rayonnement de fond pendant le processus de collecte de données est ignoré parce que le comportement transitoire pendant chaque test optique est négligeable. L'approche est plus pratique par rapport aux capteurs de turbidité et aux procédés de mesure connus, en particulier compte tenu de l'étape d'étalonnage.
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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, JO, JP, KE, KG, KH, 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)