Description

RT228 combines two RT28 controllers in one 96×96 mm case. Thanks to its lower cost than the combined cost of 2 separate RT28 controllers, this model is often preferred when 2 technological parameters are controlled in one machine or installation or of separate adjacent processes. Typical applications include control of 2 temperatures, temperature and humidity, pressure and temperature, pH and temperature, and other combinations. Each of the 2 incorporated controllers controls its relay outputs through an ON/OFF or PD algorithm, and thanks to these relay duplex outputs (2 relays per controller, 4 relays per whole device), RT228 is best suited for controlling motorized valve actuators or other actuators with 2-way action. The reliable operation even in the presence of electromagnetic disturbances makes the RT228 controller a widely applicable device.