ON/OFF process temperature control is recommended for less demanding applications. Systems with two or more heating stages utilize an electronic sequencer (step controller), driven by an analog output PID temperature controller to minimize the amount of load cycling while providing good outlet temperature control.

Heatrex offers a pre-engineered, UL Listed/CSA Approved package for freeze protecting cooling tower basins.

The HEATREX Quick Ship Contactor Temperature Control panel is a pre-engineered solution for resistive load applications. It is simple to specify, provides quick shipment, and compact packaging. The control panel is factory assembled and tested to simplify installation and operation.

The HEATREX Quick Ship SCR Control panel is pre-engineered for resistive load applications and provides fast shipment, precise temperature control, and compact packaging. The panel is completely assembled, pre-wired, tested, and ready for trouble free installation and operation.

This fully proportional SCR system with PID temperature control is recommended for industrial heating applications which must accommodate material flow changes and provide the highest degree of accuracy for outlet temperature control.