Probe for measuring pressure vibrations

摘要

Probe comprises an inner measurement pipe (1) with an outer housing pipe (12). The pipe connects a measurement end (2) with a pressure transmission end (3). The housing pipe is open at one end (14). A pressure transmitter (6) connects the pressure to a long pipe (8), the other end of which connects to the housing pipe's other end (11). The long pipe is arranged as a winding around the housing and measurement pipe. The length of the long pipe is greater than 7000 times its inner diameter, i.e. greater than 40m. The housing pipe is supplied with a cleaning gas at a temperature of between 120 and 200 degrees centigrade.