Temperature Sensors - Thermostats - Mechanical

Today, mechanical thermostats are being replaced by electronic thermostats in many applications. But, for those who still require a mechanical thermostat or just want to learn about their operation, the 3450G and 80040330G thermostats are a good choice. This article will discuss their application field and working principle.

Main Application Field for 3450G and 80040330G Thermostats: HVAC and Refrigeration

The primary application field for the 3450G and 80040330G mechanical thermostats is HVAC and refrigeration systems. These thermostats are designed to control the temperature of air or refrigerant in a variety of commercial or residential buildings. Both of these thermostats feature a high amperage contact capacity, so they are a great choice for large capacity systems where high levels of power demand need to be managed. Furthermore, they can operate up to 250 VAC in normally closed or normally open configurations.

The Working Principle of 3450G and 80040330G Thermostats

The 3450G and 80040330G thermostats are basically the same in terms of how they operate. The main difference between the two thermostats is the maximum temperature they can handle. The 3450G can operate at temperatures up to 100°C while the 80040330G can handle up to 150°C.

The basic operation of the thermostat involves a bimetallic coil connected to a brass stem. When exposed to heat, the bimetallic coil will bend as it expands and this causes the stem to move. This movement in turn opens or closes the switch contact, which will turn on or off the system. The internal circuitry of the thermostat is designed to open or close the contacts based on the temperature it is exposed to.

The 3450G and 80040330G thermostats also come with features that allow them to be configured for a wide variety of applications. These features include adjustable operating temperature range, adjustable differential, adjustable contact rating, and adjustable time delay. All of these features allow the user to customize the thermostat for their specific needs.

Conclusion

The 3450G and 80040330G thermostats are reliable mechanical thermostats that are designed to operate in HVAC and refrigeration systems. They are easy to install and the internal circuitry can be customized to adapt to various temperature ranges. With features like adjustable operating temperature range, adjustable differential, adjustable contact rating, and adjustable time delay, these thermostats offer exceptional flexibility and control.