The SS-263 volume booster is used exclusively in Fisher Optimized Digital Valve (ODV) packages. The booster amplifies the output signal from the FIELDVUE™ digital valve controller to increase the stroking speed of pneumatic actuators. It has fixed deadband and incorporates soft-seat construction for use with the Fisher 377 Trip Valve.
The booster features dynamically stabilized trim and integral bypass restriction for use with the digital valve controller. The SS-263 volume booster delivers high-volume output for fast stroking speeds when responding to large input signal changes. However, it also delivers smooth, stable, low-volume output when responding to small input signal changes. This allows stable, accurate throttling control which is often necessary during the startup or commissioning of process control equipment.
Assessed By:IEC 61508 Certificate Assessment Report
Last Updated: Thu, November 02, 2017