315000010319

Series:	3150
Part Status:	Obsolete
Circuit:	--
Switching Temperature:	--
Reset Temperature:	--
Current Rating - AC:	1.5A (240V), 6A (30V)
Current Rating - DC:	6A (30V)
Tolerance:	--
Switching Cycles:	5K
Termination Style:	--
Mounting Type:	--
Package / Case:	--

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Temperature Sensors - Thermostats - MechanicalPart 1: 315000010319 Application FieldThermostats are mechanical temperature sensors that are routinely utilized in home and business settings. They are usually wired to a heating, ventilation, and air conditioning system to maintain an optimal indoor temperature. Other applications of thermostats include but are not limited to refrigerators, water heaters, radiators, and fuel-oil furnaces. In industrial settings, thermostats are used in areas where precise temperature control is necessary, such as clean rooms, production lines, and pharmaceutical laboratories. They can also be used as part of a larger sensing system, such as a climate control system.Thermostats come in different sizes, styles, and shapes; however, the most common is the wall-mounted unit. These thermostats use a mechanical bi-metal switch to detect changes in temperature. As the temperature fluctuates, the bi-metal strip moves, triggering the release of a contact or relay, which then activates the heating or cooling system. This type of thermostat is usually wired to an HVAC system and does not require a power source. Other types of thermostats, such as digital and programmable ones, can be powered by batteries or connected to a power source and use a microprocessor to detect temperature.Part 2: 315000010319 Working PrinciplesThermostats are mechanical temperature sensors that operate on the principle of thermal expansion, meaning that a material’s density changes as it is heated or cooled. When a material is heated it expands and when it is cooled it contracts. The bi-metal strip in a thermostat is made up of two metal strips bonded together and the strip expands or contracts at different rates. As the temperature fluctuates, the two strips warp and bend as they attempt to equalize the temperature against the wall. This warping causes the contact on the bi-metal strip to press against the contact terminals of the thermostat, triggering a response from the HVAC system.Digital and programmable thermostats, on the other hand, rely on a microprocessor to detect changes in temperature. The microprocessor in the thermostat is programmed with a set point, which is the desired temperature of the room. When the temperature in the room rises or falls beyond the set point, the microprocessor sends a signal to the HVAC system, which then activates the heating or cooling system.In conclusion, thermostats are mechanical temperature sensors that can be used in home and industrial settings for temperature control. The most common type of thermostat is the wall-mounted unit, which relies on a bi-metal switch to detect changes in temperature. Digital and programmable thermostats, on the other hand, rely on a microprocessor to detect changes in temperature and adjust the HVAC system accordingly.

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