83123015 Crouzet USA, 83123015 Datasheet - Page 129

• Manufacturer Part Number: 83123015
• Description: SNAP SWITCH
• Manufacturer: Crouzet USA
• Type: Basicr

Specifications of 83123015

• Actuator Type: Plunger
• Brand/series: 83123 Series
• Contact Form: SPDT-NC/NO
• Current, Rating: 5 A
• Flammability Rating: UL 94V-0
• Force, Operating: 18.7 Oz.
• Ip Rating: IP66
• Mounting Hole Size: 0.125 "
• Number Of Poles: 1
• Number Of Positions: 2
• Operation: Snap Action
• Temperature Rating: 0 to 85 °C
• Termination: Cable
• Voltage, Rating: 250 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Capacitive Proximity Detectors – Technical Guide
Capacitive proximity detectors consist of an RC-oscillator with a special
multi-part sensing electrode. The electrode and the oscillator circuit have
a tube connected with earth potential for lateral screening. This enables
flush-mounting of the sensor in metal, since the electrical field is only
present in front of the sensing electrode. This field is the active zone of
the sensor.
When the conductive material is removed from the active zone, the
oscillator is undamped and the oscillation amplitude decreases. The
oscillator voltage amplifier and the sensor sensitivity can be modified
using the built-in potentiometer.
The middle electrode and built-in reclosing function provide excellent
compensation in conditions of humidity, dust or freezing. A special circuit
automatically compensates for these influences. The preset sensing
range remains practically constant. The electrode and compensating
circuitry of the capacitive sensors are unique in design, and provide
operating performances far superior to other capacitive sensors.
A
B and C
Applications
Capacitive sensors can be used to limit the level in tanks and containers.
These may contain fluids, pulverised or granulated materials such as
PVC, powder, dyes, flour, sugar, powdered milk, etc. These sensors can
also be used as limit switches for checking and regulating machinery
settings, even if the materials are not made of metal (as in conveyor belt
positioning and material stacking), for checking drive belts and paper
reels for sag and tear. Additionally, they can be used as detectors for
counting metal and non-metal components.
Areas of application for capacitive sensors.
CAP
CAP
CAP
CAP
H
indicates SENSOR ELECTRODE
indicates COMPENSATION ELECTRODES
Granulate
Sr
Oil
Order/Technical Support – Tel: [phone] / FAX: [phone] / www.crouzet-usa.com
A
B
C
CAP
CAP
Products and specifications subject to change without notice.
Water
Carton
Screened configuration
Sensors with a straight line electrical field.
These units can sense solids (plates, components, PCBs, hybrids,
cartons, bottles, plastic blocks and stacks of paper for example) at a
distance or liquids through a separating wall (glass or plastic up to a
maximum of 4 mm thick).
Non-screened configuration
Sensors with a spherical electrical field. These units are designed to
touch the product, both bulk solids and liquids (granulate, sugar, flour,
corn, sand or oil and water) with their active surface.
Sensing range
The data was obtained using a 1 mm thick square steel plate (steel 37)
as an actuator, with a side length equal to 3 x Sn. The steel plate was
grounded. The ambient temperature was 25ºC. The maximum sensing
range was defined as the nominal sensing range with a tolerance of
± 10%.
The sensing range depends on the shape, size and type of object
concerned. If the plate is made of different material or has a smaller
diameter, the sensing distance will be reduced.
Size correction factor
For objects which are not flat and which are smaller than the active
sensor surface, the following sensing ranges are obtained depending on
the scanned object F/FO surface, where F is the front sensor surface
(active surface) and FO the front surface of the object being scanned.
The figures in the table below refer to flush-mounting sensors and
objects in the form of long thin rods.
The diagram below shows the data from the table in graphic form.
Scanned object F/FO surface
1.50
1.24
0.80
0.61
0.31
0.20
0.15
0.05
0.03
F/FO
Nominal sensing range Sn in mm
100
100
100
100
94
85
82.5
67.5
57.5
Sn
S
3/121
3