Patent ID: 9464976
Filing Date: 2016-10-11
CPC Classification: G01F,G01N

Claim Text:
1. A viscometer comprising: a first tube having a first cross-sectional area; a second tube having a second-cross sectional area, wherein the second cross-sectional area of the second tube is larger than the first cross-sectional area of the first tube; a restrictor disposed in the second tube; a first chamber formed between an inlet of the viscometer and an inlet of the first and second tubes respectively, the first chamber having a wider diameter than the inlet of the viscometer; a second chamber formed between an outlet of the viscometer and an outlet of the first and second tube respectively, the second chamber having a wider diameter than the outlet of the viscometer; a first ultrasound flow metering device coupled with the first tube, the first ultrasound flow metering device measuring a first velocity of fluid flowing through the first tube; and a second ultrasound flow metering device coupled with the second tube, the second ultrasound flow metering device measuring a second velocity of fluid flowing through the second tube.