Temperature Controller Type 4156, 4166 & 4166K

The 4156K and 4166K Series Wizard® II temperature controllers provide rugged and economical solutions to temperature control in many applications, particularly in the chemical and oil production industries. These pneumatic instruments are available for proportional-only, proportional-plus-reset, and differential gap control. They measure process temperature with a gas-filled temperature bulb immersed in the process fluid and compare this temperature to an operator-adjusted set point. The controller then delivers a pneumatic signal to a control element that maintains the process temperature at or near the set point. The 4196 Series temperature indicating controllers show process temperature and set point on an easy-to-read process scale. A temperature bulb measures process temperature. A 4196 Series controller then compares process temperature with an operator-adjusted set point.