Device for measuring a main fluid flow through a ventilation installation

摘要

A sensor adaptor element (1) for a differential pressure sensor, the sensor adaptor element (1) being attachable to a ventilation installation, having a base element (10), and comprising or being adapted to create with a casing of the installation a pressure tapping duct with an inlet opening (113) and with pressure tapping ports (109, 110) for probing local pressures in the duct. The pressure tapping duct comprises an outlet opening (121) that may be placed in a main fluid flow entering the ventilation installation such that a Venturi effect occurs and sucks fluid into the inlet opening (113) and through said pressure tapping duct. The invention further relates to a mass flow sensor and a ventilation installation with such a sensor adaptor element (1).