Group

A pressure chart recorder is one of those quiet, dependable instruments that rarely gets attention—until something goes wrong. In industrial plants, laboratories, and utility facilities, it serves as a silent witness to the behavior of pressure within pipes, tanks, and systems. By continuously tracking and recording pressure levels over time, it helps operators understand not just what is happening in the moment, but what has been happening all along.

At its core, a pressure chart recorder measures pressure through a sensing element—often a diaphragm, bellows, or Bourdon tube—that reacts to changes in force exerted by a gas or liquid. This mechanical movement is then translated into a visual record. In traditional models, a pen traces pressure readings onto a rotating paper chart mounted on a drum. The drum turns at a steady, calibrated speed—hourly, daily, or weekly—creating a time-based graph. The result is a continuous line that tells a story…