EP 3475684 A4 20200219 - PHASE FRACTION MEASUREMENT USING CONTINUOUSLY AND ADJUSTED LIGHT SOURCE
Title (en)
PHASE FRACTION MEASUREMENT USING CONTINUOUSLY AND ADJUSTED LIGHT SOURCE
Title (de)
PHASENFRAKTIONSMESSUNG MIT KONTINUIERLICHER UND ANGEPASSTER LICHTQUELLE
Title (fr)
MESURE DE FRACTION DE PHASE AU MOYEN D'UNE SOURCE DE LUMIÈRE AJUSTÉE
Publication
Application
Priority
- US 201615194829 A 20160628
- US 201615194853 A 20160628
- US 2017038642 W 20170622
Abstract (en)
[origin: WO2018005213A1] An apparatus includes a pipe through which a multiphase fluid flows, with a transparent window structure formed in the pipe. A collimated light source emits light through the transparent window structure into the pipe having a wavelength at which a component of a desired phase of the multiphase fluid is absorptive. A photodetector is positioned such that the emitted light passes through the multiphase fluid in the pipe to impinge upon the photodetector. The photodetector has an actual dynamic range for collimated light detection. Processing circuitry is configured to adjust a power of the collimated light source dependent upon an output level of the photodetector so as to cause measurement of the emitted light over an effective dynamic range greater than the actual dynamic range. Properties of the multiphase fluid are determined as a function of the measured emitted light.
IPC 8 full level
G01N 15/14 (2006.01); G01N 15/02 (2006.01); G01N 21/359 (2014.01); G01N 21/85 (2006.01); G01F 1/74 (2006.01)
CPC (source: EP)
G01N 15/0205 (2013.01); G01N 21/359 (2013.01); G01N 21/85 (2013.01); G01F 1/74 (2013.01); G01N 21/53 (2013.01); G01N 2015/0053 (2013.01); G01N 2201/0612 (2013.01)
Citation (search report)
- [XYI] US 4981362 A 19910101 - DEJONG JOANNES N M [US], et al
- [Y] US 2010138169 A1 20100603 - JOHANSEN ESPEN S [US], et al
- [Y] US 2006186340 A1 20060824 - LIEVOIS JOHN [US], et al
- [Y] US 2009216463 A1 20090827 - XIE CHENG-GANG [GB], et al
- [A] US 2011211067 A1 20110901 - MCKAY BENJAMIN [NL], et al
- [A] US 2014152986 A1 20140605 - TRAINER MICHAEL [US]
- See references of WO 2018005213A1
Designated contracting state (EPC)
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 MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2018005213 A1 20180104; EP 3475684 A1 20190501; EP 3475684 A4 20200219
DOCDB simple family (application)
US 2017038642 W 20170622; EP 17820956 A 20170622