Chromalox AR-219 Adjustable Temperature Controller

Chromalox AR-219 Adjustable Temperature Controller is a non-indicating thermostat-style controller that uses a capillary-sensed probe to switch heating elements on and off at a user-set temperature, providing simple, reliable process control without a local readout. This AR-219 model ships with a sensing bulb and a 7-foot standard capillary, enabling remote sensing of the process temperature, and it covers a setpoint range from 60 to 250°F, with the probe included for immediate installation. It is specified for 277 VAC operation, aligning with Chromalox's line of AR/ARR/ARC temperature controllers used in industrial heating equipment. As part of Chromalox's AR/ARR family of non-indicating temperature controllers, the AR-219 is designed for straightforward on/off control at the setpoint; closely related variants (such as ARC-219) appear in catalogs with higher current ratings at 277 VAC, illustrating the range of configurations available in this family. The AR-219’s compact form, probe assembly, and voltage rating make it a practical, no-display controller for heaters, ovens, or process equipment where mechanical temperature control is preferred.