MEASURING APPARATUS FOR DIFFERENTIAL PRESSURE AND ABSOLUTE PRESSURE

摘要

A measuring instrument of differential and absolute pressure is provided to inspect performance of a smoke removing facility previously by penetrating into a wall body of a smoke discharge window or a stair room or an elevator, and measuring differential and absolute pressure easily. A measuring instrument of differential and absolute pressure comprises a pressure leading pipe(10), a connecting pipe(20), an opening/closing valve(30), and a discharge pipe(40). The pressure leading pipe is penetrated into a wall body of a smoke discharge window or a stair room or an elevator, and has predetermined length so that pressure for measuring differential and absolute pressure is applied. The connecting pipe is connected to one end of the pressure leading pipe so as to form a pressure transfer pipe, and provided with a cleaning hole in one part so as to clean inside the pressure leading pipe. The opening/closing valve has one part coupled to the connecting pipe and opens/closes the pressure transfer pipe. The discharge pipe is connected to the other part of the opening/closing valve and transfers pressure to the outside.