Types of Sensors, Advantages & Disadvantages of all types Sensors, Applications of Sensors


Types of Sensors, Advantages & Disadvantages of all types Sensors, Applications of Sensors 

One type of feedback frequently needed by industrial-control systems is the position of one or more components of the operation being controlled. Sensors are devices used to provide
information on the presence or absence of an object.

Sensor Application
Sensor Application
Sensors include limit switches, photoelectric, inductive, capacitive, and ultrasonic sensors.
These products are packaged in various configurations to meet virtually any requirement found in commercial and industrial applications. 

In addition to the advantages and disadvantages of each of these sensor types, different sensor technologies are better suited for certain applications. The following table lists the sensor technologies. 

Sensor
Advantages
Disadvantages
Applications
Limit Switch Sensor
•High
Current  Capability
•Low Cost
•Familiar
“Low- Tech” Sensing
·  Requires Physical
Contact
with Target
·
Very
Slow Response
·
Contact
Bounce
•Interlocking
•Basic
End-of-
Travel
Sensing
Photoelectric
Sensor
•Senses
all Kinds of Materials
•Long Life
•Longest
Sensing  Range
•Very Fast
Response
Time
•Lens
Subject to
Contamination
•Sensing
Range
Affected
by Color
and
Reflectivity
of Target
•Packaging
•Material
Handling
•Parts
Detection
Inductive
Sensor
•Resistant
to Harsh Environments
•Very Predictable
•Long Life
•Easy to
Install
•Distance
Limitations
•Industrial
&
Machines
•Machine
Tool
•Senses
Metal-
Only
Targets
Capacitive
Sensor
•Detects
Through  Some Containers
•Can
Detect  Non-Metallic
Targets
•Very
Sensitive to
Extreme
Environmental
Changes
•Level
Sensing
Ultrasonic
Sensor
•Senses
all  Materials
•Resolution
•Repeatability
•Sensitive
to
Temperature
Changes
•Anti-Collision
•Doors
•Web Brake
•Level
Control

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