AXELSON Esphil High-Low Pressure Controller

The High-Low Pressure Controller is a basic safety system unit which provides a means for programming the automatic operation of a surface safety valve. The ESP Pressure Sensors in the unit will sense predetermined high and low pressure limits selected by requirements of the installation. On sensing either of these limits, the unit is designed to close the surface safety valve. Sensing range of the controller is .5 to 10,000 psi; maximum instrument pressure through the sensors to the bottom of the relay is 200 psi; maximum control pressure through the relay is 375 psi.