Inspection And Maintenance - Omron E3NT Datasheet

Harsh environment long distance photoelectric sensor in metal housing

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Table Of Contents

Table of Contents

Precautions

Mounting Directions

Sensor assembly

Contrary to sensors with single triangulation, E3NT with dou-

ble triangulation, allows the measured object's direction of

motion to be in all three directions. Thus, the rotatory position

of the sensor about its optical axis can be chosen freely.

If the light spot is not completely on the same plane as the tar-

get object (minimum object size) the distance is not deter-

mined and malfunction can occur. If necessary a trigger signal

or timer function has to be applied.

The sensor must be fitted so that:

• It is correctly aligned before it is adjusted

• It is protected as far as possible against vibration and shock

• It is protected as far as possible against extraneous incident

light

• It is protected as far as possible against damage and soiling

• Electrical connection is possible

• It is as accessible as far as possible for maintenance work

• Operation of the push buttons is possible

• The display is visible.

ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.

To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.

Cat. No. E332-E2-02-X

A-100

In the interest of product improvement, specifications are subject to change without notice.

Sensor's assembly direction

As far as possible, the sensor's optical surface should be

aligned parallel to the surface of the measured object.

If the measured object has a glossy, reflecting surface, the

sensor's optical system should be tilted by 5 ... 10° in relation

to the surface of the measured object.

If there is a reflecting surface in parallel with the sensor's op-

tical axis, this might lead to unstable switching states.

Therefore, reflecting objects within the sensor's optical axis

should be avoided.

If this should not be possible, the reflecting surface should not

be parallel to the sensor's optical axis, but should be rotated

by at least 10°.

Mirror-like objects can cause malfunction inside and outside

the sensing range. Avoid mirror-like objects in or close to the

optical axis.