Pneumatic pressure testing procedure

Static performance measurements related to positioner/ac tuator operation are conformity, measured accuracy, hysteresis, dead baud, repeatability, and locked stem-pressure gain. Definitions and standardized test procedures for determining these measurements can be found in ISA-S75.13-1989, Method of Evaluating the Performance of Positioners with Analog Input Signals and Pneumatic Output . 

This test procedure uses a pneumatic tyre having a track width of 80 mm and a tyre pressure of 600 kPa. 

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