Procon Technologies Pvt. Ltd Manufactures PXG Controllers for Process Control. Procon Technologies Pvt. Ltd also manufactures Pid controllers, Temperature sensors, temperature controllers, loop controllers, gravimetric feeders etc. PXG Controllers for Process Control have a motorized valve control and can be used a simple process controller or a temperature controller. The PXG Controllers for Process Control have an RS232 computer interface with MODBUS RTU PROTOCOL. The PXG Controllers for Process Control have a servo type control.