Serviceline Industrial Sensors
Serviceline Explosion Protection

Retroreflective sensor RL81-54/25/31/115

  • Retroreflective sensor with polarization filter and foreground suppression for suppressing reflective objects
  • Relay output

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  RL81-54/25/31/115

Product Description
Retroreflective sensor with polarization filter
General specifications
Effective detection rangeREF-H88x25 0 ... 6 m
REF-H88x50 0 ... 12 m
Reflector distanceREF-H88x25 2.6 ... 10 m
REF-H88x50 2.5 ... 15.5 m
Threshold detection rangeREF-H88x25 10 m
REF-H88x50 15.5 m
Reference targetREF-H88x25
Light sourceLED
Light typemodulated visible red light , 640 nm
Diameter of the light spotapprox. 200 mm at a distance of 6 m
Angle of divergence3 °
Ambient light limitEN 60947-5-2 10000 Lux
Functional safety related parameters
Mission Time (TM)20 a
Diagnostic Coverage (DC)0 %
Indicators/operating means
Function indicatorLED yellow
Electrical specifications
Operating voltage12 ... 24 V AC/DC
Ripple10 %
No-load supply current≤ 40 mA
Time delay before availability< 300 ms
Switching typelight on
Signal outputRelay, 1 alternator Relay energized: Light beam is not interrupted
Switching voltagemax. 50 V AC ; 60 V DC
Switching currentmax. 1 A
Switching powermax: 30 W ; 60 VA
Response timeLight beam unobstructed to light beam interrupted: 10 ms
Light beam interrupted to light beam unobstructed: 80 ms
Product standardEN 60947-5-2
Approvals and certificates
CCC approvalCCC approval / marking not required for products rated ≤36 V
Ambient conditions
Ambient temperature-30 ... 60 °C (-22 ... 140 °F)
Storage temperature-40 ... 70 °C (-40 ... 158 °F)
Mechanical specifications
Degree of protectionIP65
Connection2-meter PVC cable
Optical facePMMA
Massapprox. 155 g

Documents: RL81-54/25/31/115

Instruction leafletsLanguageFile TypeFile Size
Instruction leaflet / Beipackzettel ALLPDF310 KB

Approvals+Certificates: RL81-54/25/31/115

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of Conformity / EU-KonformitätserklärungDOC-0993APDF182 KB