On Off Control Explained

What Is A Thermostatic Temperature Controller?

Thermostatic temperature controllers are a type of temperature controller that use a temperature sensor and a control mechanism to regulate the temperature of a system or process. They work by sensing the temperature of the system or process and then adjusting the heating or cooling mechanism in response to that temperature. The controller output is typically a relay contact which can switch loads such as small compressors and heating elements directly without further interface wiring. 

The basic components of a thermostatic temperature controller include a temperature sensor, a control mechanism, and a set point. The temperature sensor measures the temperature of the system or process and sends this information to the control mechanism. The control mechanism compares the actual temperature of the system or process to the desired set point temperature and then adjusts the heating or cooling mechanism as needed to maintain the desired temperature.

There are several types of thermostatic temperature controllers, including mechanical, electronic, and digital controllers. Mechanical controllers use a bimetallic strip or a liquid-filled bulb to sense temperature and operate a mechanical switch that controls the heating or cooling mechanism. Electronic controllers use a thermistor or other temperature-sensitive device to sense temperature and then use an electronic circuit to control the heating or cooling mechanism. Digital controllers are similar to electronic controllers, but they use a microprocessor to provide more precise temperature control and greater flexibility in programming and control options.

Thermostatic temperature controllers can be used to control a wide range of heating and cooling systems, including HVAC systems, industrial processes, and laboratory equipment. In HVAC systems, for example, thermostatic temperature controllers are used to regulate the temperature of the air that is circulated through the building. In industrial processes, thermostatic temperature controllers are used to maintain specific temperature ranges to ensure consistent product quality and efficient operation. In laboratory equipment, thermostatic temperature controllers are used to maintain precise temperature ranges for experiments and storage.

Overall, thermostatic temperature controllers are an inexpensive tool for regulating the temperature of systems and processes in a variety of applications. By sensing the temperature and adjusting the heating or cooling mechanism as needed, these controllers can help to improve performance, reduce energy consumption, and extend the lifespan of equipment.

While they may lack the sophistication and precision of a PID controller for many applications a tolerance of a few degrees is perfectly acceptable. By choosing a thermostatic controller there are benefits such as a cost / time saving in implementation. Simplicity is also beneficial to those operating the controllers as there are few parameters and adjustments necessary for daily use.

Our digital thermostats from Novus Automation and Ageon offer an excellent alternative to the following brands:

Omron, Schneider, LAE, Eurotherm, ABB, Tempatron, West Instruments, Jumo, Eliwell, Tecnologic