• An indicating temperature controller for use with position proportioning motors that work with a potentiometer in the controller.
• Fifteen operating ranges covering -30ºF to 1100ºF.
• Can be panel or surface mounted.

Overview / Design Principle:

Electric modulating potentiometer-type controller. Used with proportional positioning motors to operate modulating valves, damper system. etc. where straight line control is required. The instrument automatically positions any of a variety of standard motor operators to provide precise temperature control without the saw tooth line characteristic of conventional on-off control. CSA listed. Flush or wall mount, available in twelve optional ranges within -30ºF to 1100ºF.

Operation:

The potentiometer coil, which moves with the red set pointer, is positioned at the control point by turning the setting knob located on the instrument cover.

The indicating pointer, moving up or down scale in response to the expansion or contraction in the thermal element, also slides the contact finger along the potentiometer coil within the modulating range.