Temperature and Process Controllers take a signal from a temperature device, such as a thermocouple or RTD, or from a pressure/ flow/ level sensor, and maintain a setpoint using an output signal (relay, voltage pulse, current, or linear voltage depending on model).  Barry Sales Engineering offers a large range of controllers, what is listed below is just a small portion of what we offer, please give us a call at 636.326.1211 to learn more about our full-line of controllers.  Our offering includes single & Multi-Loop Programmable Controls, Data Management Software, Graphical & Chart Recorders, Process & Alarm Units, Solid State Relays & Power Control, I/O Signal Conditioning.