An ultrasound calibrator apparatus and method for calibrating ultrasound equipment. The apparatus includes a pair of opposed bellows oscillatorily transferring a fluent medium back and forth through a channel with a well-defined cross-sectional area such that the flow velocity therethrough is known. A probe in communication with ultrasound equipment to be tested is submerged in a reservoir which is situated in close proximity to the channel such that the flow velocity can be measured therewith. The ultrasound equipment is then adjusted to correct the discrepancies between the known and measured velocities so as to calibrate the ultrasound equipment.
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.
A calibration rig for calibration and/or re-calibration of flow meters (5) and/or flow meter calibration carts (7) is described comprising: a source (1) of pure sterilized water or a source (40) of a sterile conductive solution, a piping manifold (3) connected to the source (1), at least one flow meter (5) connected to the source (1) via the piping manifold (3) and/or at least one flow meter calibration cart (7) connected to the source (1) via the piping manifold (3) and a drain pipe (23) connected to each flow meter (5) and to each flow meter calibration cart (7) to guide liquid from the flow meter (5) and/or the flow meter calibration cart (7) to a drain (23).
