CSAS3F3RY2210 datasheet(51/102 Pages) EATON

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V8-T3-50

Volume 8—Sensing Solutions

CA08100010E—September 2017

www.eaton.com

3.6

Inductive Proximity Sensors

AccuProx Analog Sensors

Application Guide

Presenting AccuProx—

Unmatched Analog Range

in a Proven Package

Historically, analog sensors

have been limited by very

short sensing ranges—as

little as one or two

millimeters. By utilizing

technology first perfected in

the iProx family of digital

inductive sensors, AccuProx

can sense objects as far as

25 millimeters. This extended

range can be achieved

without making compromises

often found in competitive

products, such as reduced

output accuracy.

AccuProx utilizes many of

the proven materials found

in other tubular sensor

families. The threaded barrel

and included mounting nuts

are made of stainless steel,

which exhibits superior

corrosion and abrasion

resistance versus nickel-

plated brass. AccuProx also

features a proprietary internal

potting compound that

absorbs impacts and vibration

while sealing out moisture.

The materials used in the

construction of AccuProx are

time-tested and proven to

work.

High Output Accuracy

Analog inductive sensors are

often used in applications

that require a higher level of

precision than a standard

digital sensor. For example,

applications such as part

inspection require a sensor

that can detect very small

variances. AccuProx has been

designed with these

applications in mind.

Output accuracy is

determined by the repeat

accuracy, linearity, resolution

and response time of the

sensor.

Repeat accuracy refers to the

variations in sensing distance

between successive sensor

operations due to component

tolerances, where all

operating conditions are kept

the same. The repeat

accuracy of an 18 millimeter,

unshielded AccuProx sensor

is less than 20 micrometers.

Linearity refers to the shape of

the output curve. Many

competitive analog sensors

exhibit a wavy or “S-shaped”

output curve. This means that

a change in target distance

may not always translate into

an equivalent change in

output, particularly at the

innermost and outermost

ranges of a non-linear analog

sensor. AccuProx features a

linear output. See the

diagram below for an

example of AccuProx

versus a non-linear

competitive offering.

Resolution refers to the

number of “steps” in the

sensor output. A higher

resolution is ideal because it

will allow the sensor to

detect smaller changes in

target position.

An 18 millimeter, unshielded

AccuProx features more than

350 output steps, ensuring

consistent performance.

Typical Analog Applications

Material Imperfection or

Blemish Detection

Eccentricity or Absolute

Angle Detection

Saw Blade Deflection

AccuProx

Non-linear Sensors

Distance

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