Many latest models of hydraulic and pneumatic equipment work more efficiently with a special pressure switch, termed as a vacuum switch. The main function of this switch is related to the vacuum part of the wall pressure spectra in engineering equipment. If any change occurs in the vacuum space, this switch can sense it immediately and take necessary action. Hence, it becomes important for this switch to be functional. It mainly monitors the temperature and pressure conditions of the vacuum space, for making essential changes. Hence, the vacuum switches can ensure safety by opening or closing the electric circuit of these engineering appliances, due to the electro-mechanical construction of these switches.
The Function of Vacuum Switch:
As mentioned above, the vacuum switch is very important to detect the pressure change. Here are some other functions of the same:
Measure the vacuum pressure
Monitoring vacuum status
Based on the status, this switch opens or closes the connection
Common Varieties That Can Be Seen in Vacuum Switch
Single pole single throw switch – This type of switch has single input and output. When used in circuits, they function as on and off switches. The range for adjusting in this vacuum switch is between 100 mbar and 900 mbar. Moreover, people can get numerous options with this type of switches, based on the materials used for making the switch body, types of threads used, and electrical connections. These switches are available at affordable prices and mainly preferred for machines that process different fluids. The switch activates the circuit operating in the vacuum end of the system. Many manufacturers modify these SPST switches according to the specific needs of customers.
Single pole double throw switch – As evident from the name, this switch has single input but can be connected to two outputs or terminals. In technical terms, we can say that this switch has double poles (DP) and it can have a single throw or double-throw (DT). The vacuum switch with a single pole and double throw is quite popular for industrial uses. There are many varieties of this switch, based on the ranges of its power that can be adjusted according to the required activity. These switches can work as on and off switch. Or they can be used to connect circuits via two different paths. These kinds of switches can be used to create ready and standby mode in printers. Usually, brass or zinc-plated steel or stainless steel can be used for making the body of such switch, to keep its cost at an affordable limit. The high-quality materials used for making this switch ensures its high durability.
Miniature switch – This kind of switch is applicable for vacuum at low levels or containing very low pressure in certain appliances. They widely find application in a controlled system like vending machines, safety switches in elevators, door interlock, etc.
Sub-miniature switch – This switch works just in the opposite way of a miniature switch. This vacuum switch is applicable only for the vacuum spaces that contain high pressure or at higher levels. This switch can be adjusted from 1 to 28 degree Hg, with the utmost signal pressure of 29.9 degrees Hg. There are different mounting styles for fixing this switch into an appliance, according to the structural characteristics. These find wider application in home electronics, factory machines, office electronics, etc.
Solid-state switch – This kind of switch is directly related to the solid-state electric circuit and provides an interface to the supply of this circuit. This vacuum switch turns on the appliance to both AC and DC, without creating any noise. It is usually resistant to electric shocks and vibrations, for which it is capable of functioning even in unfavorable situations. These switches do not generate electric sparks and hence are safe to use. These are the perfect choice for the controlled system.
One of the key benefits of the vacuum switch is that it requires very less amount of energy to operate and hence are highly efficient. Moreover, they are not affected by the voltage fluctuations and thus are safe to use. Hence, this switch has high durability and also ensures better longevity of the electrical appliances. As it is compactly created with all mechanisms embedded in a small body, it can be fitted into any small household device. There is no such coil in this switch that could blow out due to short circuit or other errors.
Like it? Share it!
About the Author
Zoe Sewell Joined: August 26th, 2019 Articles Posted: 5
