3500 120129

Series:	3500
Part Status:	Obsolete
Circuit:	--
Switching Temperature:	--
Reset Temperature:	--
Current Rating - AC:	2A (115V), 5A (28V)
Current Rating - DC:	5A (28V)
Tolerance:	--
Switching Cycles:	100K
Termination Style:	Solder Lug
Mounting Type:	Chassis Mount
Package / Case:	Cylinder with Mounting Flange

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Temperature Sensors - Thermostats - Mechanical

Temperature sensing is an important part of industrial process control, and mechanical thermostats are one of the most common devices used in this application field. This article will explore the general working principle of mechanical thermostats, as well as some of their applications and potential drawbacks.A mechanical thermostat consists of a temperature sensing element connected to a control switch. The control switch opens and closes to control the temperature of an appliance or process. As the temperature changes, the temperature sensing element will expand or contract, causing the control switch to open and close accordingly.The most common type of mechanical thermostat used in industrial process control is the bimetallic thermostat. This type of thermostat contains two metals with different expansion coefficients that are connected together. As the temperature increases, the metal with the higher expansion coefficient will expand more quickly, causing the control switch to open and close. This type of thermostat is able to accurately control the temperature of a process.In addition to controlling the temperature of a process, mechanical thermostats are also used to control ventilation, heating systems, air conditioners, and other appliances. Additionally, mechanical thermostats are used in automobiles to regulate the temperature of the engine.Despite their usefulness, mechanical thermostats have certain drawbacks. As these thermostats are mechanical devices, they can be prone to mechanical failure. Additionally, these thermostats can suffer from poor accuracy and poor response time. For applications that require precise temperature control, mechanical thermostats may not be the best option.In summary, mechanical thermostats are one of the most common types of temperature sensors used in industrial process control. They are simple and relatively inexpensive devices, and they can accurately control the temperature of a process. However, these devices can be prone to mechanical failure and may lack the accuracy or response time required for certain applications. For these reasons, careful consideration should be taken when selecting a mechanical thermostat for a specific temperature sensing application.

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