Device and method for calibration of a mass flow sensor

Details Device and method for calibration of a mass flow sensor Device and method for calibration of a mass flow sensor

2003-08-08

2008-12-09

Rogers, David A. (Department: 2856)

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

C073S001160, C073S001250, C073S001350, C073S861610, C073S861620, C073S861630

Reexamination Certificate

active

07461537

ABSTRACT:
A device and method for calibration of a mass flow sensor (14) employs a flow channel and a holder for the mass flow sensor in the flow channel. An adjustable throttle device is provided between the holder and a connection to a pump during a calibrating operation to operate on the basis of a predetermined time/displacement profile by means of a control device. During operation of the pump, the throttle device generates a supercritical flow with which a flowing medium has the speed of sound in the narrowest cross section of the throttle device.

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