Specifications are subject to change without notice (20.08.01) 1
Rated operating dist. (Sn)
CA18CLF08 3 to 8 mm
factory set at 8 mm
CA18CLN12 3 to 12 mm
factory set at 12 mm
Sensitivity Adj. 270° turn pot. meter
Effective operation dist. (Sr)0.9 x S
n
≤ Sr≤ 1.1 x S
n
Usable operation dist. (Su)0.8 x S
r
≤ Sn≤ 1.2 x S
r
Repeat accuracy (R) ≤ 5%
Hysteresis (H)
4 to 20% of sensing distance
Rated operational volt. (UB)
10 to 40 VDC (ripple included)
Ripple ≤ 10%
Rated operational current (I
e
)
Continuous ≤ 200 mA
No-load supply current (I
o
) ≤ 10 mA
Voltage drop (U
d
) ≤ 2.5 VDC at max. load
Protection Reverse polarity,
short-circuit, transients
Frequency of operating
cycles (f) 30 Hz
Indication for output ON LED, yellow
Environment
Degree of protection IP 67 (Nema 1, 3, 4, 6, 13)
Temperature
Operating temperature
-25° to +80°C ( -13° to +176°F)
Storage temperature
-40° to +85°C (-40° to +185°F)
Housing material
Body Grey, thermoplastic polyester
Front Grey, polyester
Cable end Polyester
Nuts Black, reinforced nylon
Connection
Cable Grey, 2 m, 4 x 0.34 mm
2
Oil proof PVC
Plug (M1) M12 x 1
Cable for plug (M1) CON.1A-series
Weight
Cable version 110 g
Plug version 30 g
Approvals
UL, CSA
CE-marking Ye s
Type Selection
Product Description
Proximity Sensors Capacitive
Thermoplastic Polyester Housing
Type CA, M18, DC
• Featuring TRIPLESHIELD™ sensor protection
• Adjustable sensing distance 3-8 mm or 3-12 mm
• Rated operational voltage: 10-40 VDC
• Output: DC 200 mA, NPN or PNP
• Make and break switching function
• LED indication
•High noise immunity
• Flush and non-flush types
• Plug and cable versions
Capacitive proximity switches
with either sensing distance 8
mm flush mounted in metal or
sensing distance 12 mm nonflush mounted. 4-wire DC output with both make (NO) and
break (NC) switching. Grey
M18 polyester housing with
2 m PVC cable or M12 plug.
Ideal for use in level and
plastic machinery applications.
Housing Rated Mounting Ordering no. Ordering no. Ordering no. Ordering no.
diameter operating Transistor NPN/cable Transistor NPN/plug Transistor PNP/cable Transistor PNP/plug
dist. (S
n
)
1)
Make & break Make & break Make & break Make & break
switching switching switching switching
M18 8 mm
Flush (built-in)
CA18CLF08NA CA18CLF08NAM1 CA18CLF08PA CA18CLF08PAM1
M18 12 mm Non-flush CA18CLN12NA CA18CLN12NAM1 CA18CLN12PA CA18CLN12PAM1
1)
Object: Grounded steel plate
Specifications
TRIPLESHIELD™
Capacitive proximity switch
Housing style
Housing size
Housing material
Housing length
Detection principle
Sensing distance
Output type
Output configuration
Connection type
Ordering Key
CA18CLN12NAM1
2 Specifications are subject to change without notice (20.08.01)
Wiring Diagrams
EC, M18, DC
NPN
PNP
3 BU
2 WH
4 BK
1 BN
1 BN
2 WH
4 BK
3 BU
Max.
Min.
Sensitivity
The environments in which
capacitive sensors are installed can often be un
stable regarding temperature, humidity,
object distance and industrial
(noise) interference. Because
of this, Carlo Gavazzi offers as
standard features in all TRIP-
LESHIELD™ capacitive sensors a user-friendly sensitivity
adjustment instead of having
a fixed sensing range, extended sensing range to accom-
modate mechanically demanding areas, temperature stability
to ensure minimum need for
adjusting sensitivity if temperature varies and high immunity to electromagnetic interference (EMI).
Note:
Sensors are factory set (default) to maximum rated sensing range.
Adjustment Guide
Installation Hints
Capacitive sensors have the
unique ability to detect almost
all materials, either in liquid or
solid form. Capacitive sensors can detect metallic as
well as non-metallic objects,
however, their traditional use
is for non-metallic materials
such as:
• Plastic Industry
Resins, regrinds or moulded
products.
• Chemical Industry
Cleansers, fertilisers, liquid
soaps, corrosives and petrochemicals.
• Wood Industry
Saw dust, paper products,
door and window
frames.
• Ceramic & Glass
Industry
Raw material, clay or finished products, bottles.
• Packaging Industry
Package inspection for level or contents, dry goods,
fruits and vegetables, dairy
products.
Materials are detected due to
their dielectric constant. The
bigger the size of an object,
the higher the density of material, the better or easier it is
to detect the object. Nominal
sensing distance for a capaci-
tive sensor is referenced to a
grounded metal plate (ST37).
For additional information regarding dielectric ratings of
materials please refer to
Technical Information.
Dimensions
1)
M12 x 1
1)
CA18CL...
1) Note: Only CA18CLN
Relief of cable strain
Protection of the sensing face Switch mounted on mobile carrierTo avoid interference from inductive voltage/
current peaks, separate the prox. switch power cables from any other power cables, e.g.
motor, contactor or solenoid cables
Incorrect
Correct
The cable should not be pulled
A proximity switch should not serve as
mechanical stop
Any repetitive flexing of the
cable should be avoided
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