Honeywell Proportional Temperature Controller - T991A1152/U

The Honeywell Proportional Temperature Controller is a high-performance control system with a setpoint temperature range of -15 degrees Celsius to 35 degrees Celsius. Notably, the controller features a copper bulb sensor element, carefully dimensioned to 1/2 inch in diameter and 4-3/16 inches in length. Coupled with a 135-ohm potentiometer and a 5-foot capillary, the controller presents unparalleled accuracy and reliability.

This model distinguishes itself with its Fast Response variants specifically designed for duct mounting. These models employ a coiled sensing element that offers a response rate that is at least four times faster than standard models. Additionally, the controller integrates ambient temperature compensation features designed to account for fluctuations in the case and tubing.

Another significant attribute is the controller's sensing element capillary tubing, which allows for remote mounting of the sensing element. The set point can conveniently be read and adjusted through the case cover for enhanced usability in diverse conditions. Internally, the controller hosts a throttling dial that adjusts the proportional throttling range, serving as evidence of the unit's superior adaptability to the nuanced requirements of different applications.