There's no difference between a travel switch and a limit switch. The limit switch, also known as the travel switch, can be installed on a relatively stationary object or a moving object. When the animal approaches the still life, the connecting rod of the switch drives the switch contact, causing the closed contact to break or the open contact to close.
The difference between limit switch and proximity switch is: different characteristics, different principles and different applications.
First, the characteristics are different
1. Limit switch: limit switch has the characteristics of small size, multiple functions, high precision, adjustable limit, strong versatility and easy maintenance, installation and use adjustment.
2, proximity switch: the proximity switch has the characteristics of the limit switch, and has sensing performance, reliable action, stable performance, fast frequency response, long application life, strong anti-interference ability, and waterproof, shockproof, corrosion resistance and other characteristics.
Second, the principle is different
1, limit switch: The principle of limit switch is to use the collision of the moving parts of the production machinery to make its contact action to achieve the switch or break the control circuit, to achieve a certain control purpose.
2, proximity switch: The principle of proximity switch is that when the object is close to the induction surface of the switch to the action distance, no mechanical contact and pressure can be applied to make the switch action, so as to drive the DC electrical appliance or provide control instructions to the computer (plc) device.
3. Different applications
1, limit switch: limit switch is widely used in construction, port, mining and other industries of lifting, transmission machinery space coordinate control and limit, to control its travel, terminal limit protection.
2, proximity switch: Proximity switch in aviation, aerospace technology and industrial production have a wide range of applications. In daily life, such as the automatic doors of hotels, restaurants, garages, automatic hot air machines have applications. In terms of security and anti-theft, such as data archives, accounting, finance, museums, vaults and other major places are usually equipped with anti-theft devices composed of various proximity switches.
