บทความ เกจวัดแรงดัน

Emerson introduces silencer to protect workers

Emerson has introduced the Fisher WhisperTube Modal Attenuator for noisy fuel or vapour functions, which offers noise discount in compressible fluid service for improved worker safety, with no impression on process move.
The modal attenuator is a full-bore system offering 15-decibel sound suppression to reduce back noise inside pipes produced by sources upstream, such as management valves or other gadgets. – Image: Emerson
The modal attenuator from Emerson is a full-bore gadget offering 15-decibel sound suppression to reduce noise inside pipes produced by sources upstream, such as management valves or different devices. It is installed downstream of these devices rather than a pipe spool piece, it generates no further pressure drop, and has no impact on course of move.
Until now, all solutions have generated vital strain drop, lowered circulate, and/or launched obstructions. This has led some users to install acoustic insulation to pipe sections to reduce noise, however this can be pricey and cumbersome to put in, and it does nothing to reduce inner piping noise. เกจวัดแรงดันคือ addresses these and other points with a drop-in solution, enhancing employee safety and regulatory compliance, whereas reducing the danger of harm to downstream tools because of excessive noise ranges internal to piping.
Leading functions for the modal attenuator embrace those the place upstream process flows are modified by management valves, strain aid valves, pumps, compressors and other devices that generate noise. Many of these devices should be put in in lengths of piping with no flow restrictions downstream, and the modal attenuator works nicely in these functions as a result of it introduces no such restrictions.
In addition, the modal attenuator does not introduce an obstruction into the piping, so it can be used in purposes the place particulates are suspended in process flows, and/or where pigging is required for cleaning and maintenance.
WhisperTube gadgets are supplied in sizes from 2–12 in, with American Society of Mechanical Engineer (ASME) flange ratings of Class one hundred fifty, 300 and 600. Pressure scores match the flange rating sizes, and the maximum temperature is 700°F (371° C).

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