Back to results
US 5,965,800 AGranted
Method of calibrating an ultrasonic flow meter
AssigneeRosemount Inc.
InventorAlvin E. Brown
Life of this patent
Estimating the term…
Abstract
A method of calibrating an ultrasonic flow meter (10) first determines a static flow offset (52). Next, a dynamic flow offset (54) and a flow speed (56) are determined. An adjusted flow speed (58) is determined by subtracting the static flow offset and one half the dynamic flow offset from the flow speed to form an adjusted flow speed.
Claims5
A method of calibrating an ultrasonic flow meter, comprising the steps of:
- (a) measuring a flow speed in a forward flow situation under a flowing condition, to form a forward flow speed;
- (b) measuring a flow speed in a reverse flow situation under the flowing condition, to form a reverse flow speed;
- (c) adding the forward flow speed to the reverse flow speed to form the dynamic flow offset.
Dependencies are inferred from the claim text.