| 摘要 |
This pressure gauge comprises a mounting section connected to a joint provided partway along a pipeline, and a measurement section provided on the mounting section, and in which the upwards movement of an actuator rod causes a rotation of a needle. In the mounting section, a concave section is provided with a base which interconnects with the inside of the pipeline, and inside this concave section is provided a diaphragm with a closed base, with an outer surface comprising a bellows section formed as a concertina shape, and with a central aperture for housing the tip of the actuator rod, and the pressure of fluid within the pipeline acts upon the base of the diaphragm compressing the diaphragm. At the tip of the actuator rod housed within the housing aperture is installed a protective cap which is constructed from polytetrafluoroethylene resin or a vinyl chloride or the like with excellent chemical resistance. |
