2

Specifications are subject to change without notice (19.01.2021)

Wiring Diagrams

EC, M18, AC

Max.

Min.

Sensitivity

The environments in which

capacitive sensors are install-

ed can often be unstable re-

garding temperature, humidity,

object distance and industrial

(noise) interference. Because

of this, Carlo Gavazzi offers

as standard features in all

TRIPLESHIELD™ capacitive

sensors a user-friendly sen-

sitivity adjustment instead of

having a fixed sensing range,

extended sensing range to

accommodate

mechanically

demanding areas, temperatu-

re stability to ensure minimum

need for adjusting sensitivity

if temperature varies and high

immunity to electromagnetic

interference (EMI).

Note:

Sensors are factory set (de-

fault) to maximum rated sen-

sing range.

Adjustment Guide

Installation Hints

Capacitive sensors have the

unique ability to detect al-

most all materials, either in li-

quid or solid form. Capacitive

sensors can detect metallic

as well as non-metallic ob-

jects, however, their traditi-

onal use is for non-metallic

materials such as:

•

Plastic Industry

Resins, regrinds or moul-

ded products.

•

Chemical Industry

Cleansers, fertilisers, liquid

soaps, corrosives and pe-

trochemicals.

•

Wood Industry

Saw dust, paper products,

door and window frames.

•

Ceramic & Glass

Industry

Raw material, clay or finish-

ed products, bottles.

•

Packaging Industry Pac-

kage inspection for level or

contents, dry goods, fruits

and vegetables, dairy pro-

ducts.

Materials are detected due

to their dielectric constant.

The bigger the size of an

object, the higher the den-

sity of material, the better

or easier it is to detect the

object. Nominal sensing di-

stance for a capacitive sen-

sor is referenced to a groun-

ded

metal

plate

(ST37).

For additional information

regarding dielectric ratings

of materials please refer to

Technical Information.

Dimensions

1)

M12 x 1

1)

1

3

2

CA18CL...

1) Note: Only CA18CLN

CA18CLxxxTC

CA18CLxxxTO

BU (2)

BU (2)

BN (3)

BN (3)

Relief of cable strain

Protection of the sensing face

Switch mounted on mobile carrier

To avoid interference from inductive voltage/

current peaks, separate the prox. switch pow-

er 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