Seco-Larm E-931-S33PRQ Specsheet

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y

Polarized Reflective-Beam Sensor

E-931-S33PRQ 33’ (10m) Range, Weatherproof

The E-931-S33PRQ Polarized Reflective-Beam
Sensor reduces the interference caused by shiny
objects reflecting light back into the sensor.

Features:

For assembly line automation, outdoor gates,

X

garage or overhead doors.

X Operates on 12 ~ 250 VAC/VDC.
X Weatherproof (IP66) for indoor and outdoor

applications.

X Dual-color LED for beam alignment.
X Compact size:

3

/4” x 21/2” x 23/8” (122 x 62 x 61 mm)

4

X Mounting bracket and hardware included.

How Polarized Sensors Work:

The transmitted IR light that the sensor emits is polarized in a

Specifications:

Sensing range 33’ (10m)
Operating voltage 12 ~ 250 VAC/VDC
Current draw 50mA (max.)
Response time 10ms (max)
Beam spread angle 1.5°
Light source IR LED

Dual-color
LED

Output SPDT relay output 2A@30VDC
Enclosure Top case: PMMA; Bottom case: ABS
Operating temperature -13° ~ 140° F (-25° ~ 60°C)

Red
Green ON: beam aligned

OFF: beam aligned, ON: beam broken

Flashing: Beam alignment weak

certain direction. When shiny objects pass in front of the
transmitted beam, they reflect light into a polarized filter. Only light
that matches the original polarization will pass into the receiver.

Beam will be interrupted, even
though light is reflecting back.

Incorrectly

reflected light

Normal Operation

Shin

object

Correctly

Copyright© 2009 SECO-LARM U.S.A., Inc. All rights Reserved.
The SECO-LARM policy is one of continual development. For that reason SECO-LARM reserves the right to change prices and specifications without notice. SECO-LARM is not responsible for misprints.

SECO-LARM

Tel: [phone] (Domestic U.S. & Canada)
16842 Millikan Avenue, Irvine CA 92606 Tel: [phone] (California and International) Fax: [phone]

®

Email: [e-mail] Website: www.seco-larm.com

reflected light

pi-E-931-S33PRQ.doc