The thermostat is an instrument that has the function of preventing the temperature of a given system from varying beyond certain preset limits. A mechanism of this type is composed essentially of two elements: one indicates the thermal variation suffered by the system and is called the sensor element; The other controls this variation and corrects the temperature deviations, keeping it within the desired range. Thermostats control the temperature of refrigerators, electric irons, air conditioners and many other appliances.
The first electric thermostat was created in 1883 by Warren S. Johnson. Later developed technologies included mercury thermometers with electrodes inserted directly through the glass, so when contacts hit a certain temperature, they would be closed by mercury. This example of thermostat is quite accurate in certain temperature ranges.
THERMOSTAT IN INDUSTRIAL AUTOMATION
Thermostats are widely used in industry to control the temperature of equipment, circuits, boilers and refrigerated environments, one can use the device to start the system or equipment stop when the temperature reaches the reference value or send an alert when the temperature falls Below the limit, protecting them from failures damages by increasing or decreasing the temperature. In addition it can be used for process control, or giving sequence to a new stage of the process when the temperature reaches a certain level.
RESIDENTIAL AUTOMATION THERMOSTATS
In residential automation thermostats are generally used for ambient temperature control for the purpose of turning on or off cooling equipment, ventilation or heating according to ambient temperature, are also used in the control of ovens and refrigerators to maintain the temperature or notify when it Reach the referential value.
