Temperature Measurement

Self-actuated Temperature regulators basics. How does temperature regulator work?

What is Self-actuated Temperature regulators?

The Self-Operating Temperature Regulator is a mechanically operated instrument intended to control system temperature by modulating heating or cooling fluid’s flow in reaction to changes in temperature.

Construction of Self-actuated Temperature regulators:

The assembly of the pipe system consists of the delicate bulb, capillary tubing, bellows assembly, dial thermometer stated, and cap.

The tube system material assembly consist of the sensitive bulb, capillary tubing, and the bellows assembly, and an indicating dial thermometer; the cap should be specified in data sheets

A teflon v ring (or graphite asbestos for high-temperature apps) packaging sets with male and female adopters used as end caps and a stainless steel compression spring should be used for the regulators ‘ packaging gland.

The spring loading of the packaging should keep the rings properly compressed and also compensate for the wear on the seals.

How self actuated temperature regulator works?

Regulation takes place when the heat system’s sensing component (bulb) is subjected to temperature modifications. The heat system is loaded with a predetermined quantity of vapor fill that will cause a bellow to grow within the actuator housing of the unit when heated.

As the bellows expand, a return spring is compressed while the valve stem is simultaneously moved down to stroke the valve.

When the temperature of the method reduces (or in case of failure of the thermal system), the return spring moves the stem of the valve up to the place “out.”


Instrumentation Engineer

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