- 1 8 Proximity Sensors Features You Should Know
8 Proximity Sensors Features You Should Know
1.Contactless Sensing of Proximity Sensor
Proximity Sensors detect an object without touching it, and they therefore do not cause abrasion or damage to the object. Devices such as limit switches detect an object by contacting it, but Proximity Sensors are able to detect the presence of the object electrically, without having to touch it.
No contacts are used for output, so the Sensor has a longer service life (excluding sensors that use magnets).
Proximity Sensors use semiconductor outputs, so there are no contacts to affect the service life.
Unlike optical detection methods, Proximity Sensors are suitable for use in locations where water or oil is used.
Detection takes place with almost no effect from dirt, oil, or water on the object being detected. Models with fluororesin cases are also available for excellent chemical resistance.
4.High Speed Response of Proximity Sensors
Proximity Sensors provide high-speed response, compared with switches that require physical contact.
5. Wide Temperature Range
Proximity Sensors can be used in a wide temperature range. Proximity Sensors can be used in temperatures ranging from -40 to 200°C.
6. Not affected by colors
Proximity Sensors are not affected by colors. Proximity Sensors detect the physical changes of an object, so they are almost completely unaffected by the object’s surface color.
7. Ambient Temperatures
Unlike switches, which rely on physical contact, Proximity Sensors are affected by ambient temperatures, surrounding objects, and other Sensors.
Both Inductive and Capacitive Proximity Sensors are affected by interaction with other Sensors. Because of this, care must be taken when installing them to prevent mutual interference. Care must also be taken to prevent the effects of surrounding metallic objects on Inductive Proximity Sensors, and to prevent the effects of all surrounding objects on Capacitive Proximity Sensors.
8. There are Two-wire Sensors
The power line and signal line are combined. This reduces wiring work to 2/3 of that require for Three-wire Sensors. If only the power line is wired, internal elements may be damaged. Always insert a load.
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