Page 72 - Sensors and Systems - North American Catalog
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Proximity Sensors,
Inductive Sensors,
cylindrical
1
.1.1
Proximity Sensors,
Inductive Sensors,
rectangular types
1
.1.2
Proximity Sensors,
Inductive Sensors,
slot type
1
.1.3
Proximity Sensors,
Inductive Sensors
1
.1
Proximity Sensors,
Inductive Sensors,
ring type
1
.1.4
Proximity Sensors,
Inductive Sensors,
Rotational Speed Monitors
1
.1.7
Proximity Sensors,
Inductive Sensors,
Dual Position Sensors for Valve Actuators
1
.1.5
Proximity Sensors,
Inductive Sensors,
Dual Sensors for Clamping Systems
1
.1.6
Proximity Sensors,
Inductive Sensors,
Valve Position Sensors ( Accessories)
1
.1.5
Sensors and Systems for Factory Automation
Issue 2012
70
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Refer to General Notes Relating to Product Information
Pepperl+Fuchs Group
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Copyright Pepperl+Fuchs
Proximity Switches
Introduction
Choosing the Right Sensor in Five Steps
Selecting the appropriate sensor depends on the application and the
material of the object to be detected.
If the object is metal, we recommend an inductive sensor.
If the object is plastic, paper or fluid (oil or water-based), granular or powder,
we recommend a capacitive sensor.
If the object contains a magnet, a magnetic field sensor is suitable.
You can find more background information on the physical effect of the
different types of proximity sensors at the start of each relevant chapter.
Find the ideal sensor for your application in five steps:
•
Step 1: Housing design
•
Step 2: Operating distance
•
Step 3: Mounting conditions
•
Step 4: Electric data and connections
•
Step 5: General specification and special features
Step 1: Housing design
Rectangular/cube sensors
This housing shape features the same mounting hole dimensions that
are used for mechanical end position sensors. The limit switch housing
style consists of a stable housing base (PBT or metal) that is fastened to
the mounting surface for customer wiring. The top component is sealed
with a gasket against the housing base. The top component contains the
switching amplifier and sensor that can be positioned in five directions,
i.e., the active surface can face forward, to the right, left, top, or down.
The cube style family also includes the L series, which is extremely
compact and provides quick disconnect and mounting. The active surface
can be adjusted in 15° steps on two levels. The connection is via V1 plug
connector.
Type
Dimensions
(front) mm
Settings (head)
Limit switch
40 x 40 or
55 x 55
Adjustable by 90°
Mini limit
switch
30 x 30
Adjustable by 90° and
in increments of 15°
L series
40 x 40
Adjustable by 90° and
in increments of 15°
Flat pack (FP)
Flat pack proximity sensors have a large front area (80 mm x 80 mm) and
therefore a long operating distance. They consist of two parts. The base
contains the terminal compartment and the top contains the sensor coil
system and the electronics, which are encapsulated in casting resin. The
top is always made from PBT and the bottom can be either PBT or cast
metal. They conform with the mounting hole arrangement (housing design
ID80) defined in European standard EN 60947.
Cylindrical sensors
This sensor style has the active zone on the front face in an
axial direction. Cylindricals are available in diameters of 3 mm
(unthreaded) or 4 mm (threaded) up to 30 mm (threaded) or
40 mm smooth (with terminal housing) and provide the user with a wide range of
sizes and connection styles.
Surface mount proximity sensors
These proximity sensors are mounted to the required surface. Different
versions are available with the active zone aligned upwards or forwards.
The housing is usually made of PBT.
