Pressure management arrangement

A pressure measurement arrangement for measuring a line pressure of a product is described wherein product hold-up inside of disposable parts is minimized, comprising: a reusable pressure sensor comprising a measurement diaphragm, a fitting, the fitting comprising: a tubular opening extending through said fitting, for the reception of a disposable elastomeric tube, an aperture extending through an outside wall of the fitting into the tubular opening; and mounting structure, for mounting the pressure sensor on the aperture, such that the measurement diaphragm is exposed to an inside of the tubular opening; wherein the disposable tube is inserted in the tubular opening of the fitting during measurement; and an outside wall of the disposable tube comprises a thin flexible portion, which conforms to the measurement diaphragm when the disposable tube is pressurized by the line pressure.