PID Controllers


From single to multi-point control, Red Lion has the right PID controller for any application. Red Lion provides a wide range of proportional-integral-derivative (PID) controllers that are rugged, reliable and easy to deploy. Our PID controllers offer industry-leading features and reliable performance designed for the most demanding applications.

Panel Mount


Red Lion’s PXU enables tighter, more reliable control over a wide range of processes from a single PID controller. Available in 1/16, 1/8 and 1/4 DIN size models, the PXU accepts process, thermocouple and RTD signals and presents values on one of the industry’s largest dual displays. Available options include DC analog control, RS-485 communication and user inputs. Learn more.

DIN Rail Mount

Graphite®, FlexEdge® and Modular Controller

The FlexEdge and Graphite platforms and Modular Controller series allow users to seamlessly integrate multi-zone PID control, data acquisition and I/O into PC, DCS or PLC control systems.  Stack hot swappable modules together for a space saving solution. Available features include protocol conversion, virtual HMI, advanced web server, SQL query and cloud connectors. 


 ModelPXU Modular ControllerGraphite® PlatformFlexEdge® Platform
 Size1/16 DIN
1/8 DIN
1/4 DIN
 DIN RailVarious Panel
and DIN Rail
DIN Rail
 Display Capability  Virtual
 Universal Signal Input 
 Single Loop 
 Dual Loop  
 Multiple Loop  
 Heater Current Monitor 
 Remote Setpoint    
 Ramp/Soak Capability 

For possible replacements of discontinued models, please see our Product Replacement Guide.