Enter the characters you see below Sorry, we just need to make sure you’re not a robot. Jump to navigation Jump to search This article is about the temperature regulating device. This article needs additional citations for verification. Honeywell’s iconic “The Round” model T87 thermostat, one of which is 7 day programmable thermostat with lockout the Smithsonian.
Did not find what they wanted? Try here
Next Generation Lux Products TX9600TS Universal 7-Day Programmable Touch Screen Thermostat. A thermostat is a component which senses the temperature of a physical system and performs actions so that the system’s temperature is maintained near a desired setpoint. A thermostat operates as a “closed loop” control device, as it seeks to reduce the error between the desired and measured temperatures. Sometimes a thermostat combines both the sensing and control action elements of a controlled system, such as in an automotive thermostat. The word thermostat is derived from the Greek words θεiμός thermos, “hot” and στατός statos, “standing, stationary”. A thermostat exerts control by switching heating or cooling devices on or off, or by regulating the flow of a heat transfer fluid as needed, to maintain the correct temperature.
A thermostat can often be the main control unit for a heating or cooling system, in applications ranging from ambient air control, to such as automotive coolant control. Thermostats use different types of sensors to measure the temperature. In one form, the mechanical thermostat, a bimetallic strip in the form of a coil directly operates electrical contacts that control the heating or cooling source. To prevent excessively rapid cycling of the equipment when the temperature is near the setpoint, a thermostat can include some hysteresis. Instead of changing from “on” to “off” and vice versa instantly at the set temperature, a thermostat with hysteresis will not switch until the temperature has changed a little past the set temperature point.