The capacitive proximity sensor consist a high frequency oscillator along with a sensing surface formed by two metal electrodes.
Capacitive proximity sensor advantages and disadvantages.
Inductive sensor is used for wide variety of applications viz.
It can detect through containers of certain types also.
Hey we are going to know proximity sensor applications proximity sensor uses proximity sensor types and its advantages features benefits.
When an object comes near the sensing surface it enters the electrostatic field of the electrodes and changes the capacitance of the oscillator.
Refer capacitive sensor basics and working for more information.
There are many types each suited to specific applications and environments.
Humidity sensing method advantages disadvantages.
Pressure independent it works when pressure is being applied it has limited long term stability.
Advantages of capacitive sensor.
The elastic deflection of a membrane due to the applied force is detected by a capacitance variation.
Machine tools to sense metal targets etc.
Advantages ultrasonic proximity sensors are not affected by atmospheric dust snow rain etc can work in adverse conditions sensing distance is more compared to inductive or capacitive proximity sensors disadvantages ultrasonic sensors has more difficulties reading reflections from soft curved thin or small objects.
Proximity sensors detect the presence or absence of objects using electromagnetic fields light and sound.
Following are the advantages of capacitive sensor.
Following are the advantages of inductive sensor.
It is sensitive to dewing and certain aggresive substances.
Advantages of inductive sensor.
Proximity sensor is a device that can detect the presence of an object near it without any physical contact.
It can withstand harsh environmental conditions.
It has longer life.
Capacitive can withstand below temperature of 0 o c it does not require any maintenance for longer periods flexibility to use atm.
Working principle of capacitive proximity sensor.
It can be used to detect non metallic targets.
A transducer that uses capacitance variation is known as capacitance sensors.