Pipe testing equipment

A hydrostatic test system for pressure testing a workpiece, comprising:

• a pressure sensing means for sensing a differential pressure condition occurring within the test system;
• a pressure regulating means for maintaining a set pressure within the test system;
• an accumulator for storing fluid under pressure and for absorbing fluid concomitant with the occurrence of a differential pressure condition;
• a high accuracy transducer for monitoring the fluid pressure within the test system and producing output signals responsive to variations in fluid pressure within the system;
• a pressure supply means for supplying fluid pressure to the test system;
• pressure feeding means for regulating and feeding fluid to the workpiece in order to bring the workpiece to a predetermined set pressure;
• and
• an electronic control means for receiving output signals from the high accuracy transducer and for monitoring and operating the pressure regulating means and the pressure feeding means.

A computer-controlled hydrostatic test system for pressure testing a workpiece, comprising:

• a pressure sensing means for detecting variations in pressure occurring within the test system and generating output signals thereby;
• an accumulator for holding a fluid at a set pressure equal to the set pressure within the test system;
• a pressure regulating means for increasing or decreasing the pressure within the test system by allowing fluid to enter the test system or allowing fluid to drain from the system;
• an electronic control means for monitoring and processing the output signals from the pressure sensing means and for actuating the pressure regulating means;
• and
• a means for supplying fluid pressure to the test system.