Pneumatic Pressure Controllers
Once again Emerson Process Management reinforces its long-standing commitment to technological excellence with a complete line of pressure controllers. Simplicity…ruggedness…reliability - these are the qualities that have made Fisher® products the industry standard in pressure control. These controllers bring you economical and accurate control whether the process variable is differential pressure (at either low or high static pressures) or gauge pressure. Their simple, yet rugged construction pays off in long, reliable service under difficult operating conditions.
 | Differential pressure controllers use either a bellows or a capsular element for sensing two different pressures. The difference between these pressures is then compared to an operator-adjusted set point. |
 | Fisher products compare sensed process or differential pressure and send a pneumatic signal to an adjacent control element that maintains the process pressure at or near the set point value. |
 | Gauge pressure controllers measure the difference between the absolute pressure and the local atmospheric pressure |
 | The Fisher high-low pressure pilot product offering maintains full output when the process is within the set point range. If the process moves outside of this range, the pilot switches to zero output. |
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