Serviceline Industrial Sensors
Serviceline Explosion Protection

Diffuse mode sensor RLK31-8-2500-IR/31/33/115-7M

  • Operating voltage AC / DC
  • Highly visible LED
  • Relay output, 1 potential free alternator
  • Compact and stable housing
  • Protection class II

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, also apply to Pepperl+Fuchs AG.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  RLK31-8-2500-IR/31/33/115-7M

Product Description
Diffuse mode sensor, plastic housing, 2500 mm adjustable detection range, AC/DC version, infrared light, light on, relay contact output, fixed cable
General specifications
Detection range0 ... 2500 mm adjustable
Light sourceIRED
Light typemodulated infrared light , 850 nm
Polarization filterno
Diameter of the light spotapprox. 50 mm at a distance of 2.5 m
Angle of divergence2 °
Functional safety related parameters
MTTFd790 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)0 %
Indicators/operating means
Function indicatorLED yellow, lights up with receiver lit
Control elementsSensing range adjuster
Electrical specifications
Operating voltage24 ... 240 V AC
12 ... 240 V DC
Switching typelight on
Signal outputRelay, 1 alternator
Compliance with standards and directives
Standard conformity
Product standardEN 60947-5-2:2007
IEC 60947-5-2:2007
Mechanical specifications
Housing width18 mm
Housing height62 mm
Housing depth35 mm
Degree of protectionIP67
Connection7 m fixed cable , 5-wire
Optical facePMMA

Documents: RLK31-8-2500-IR/31/33/115-7M

Instruction leafletsLanguageFile TypeFile Size
Instruction leaflet / Beipackzettel ALLPDF452 KB

CAD+CAE: RLK31-8-2500-IR/31/33/115-7M

CADFile TypeFile Size
3-D model in IGS format / 3-D-Modell im IGS-FormatIGS565 KB
3-D model in STP format / 3-D-Modell im STP-FormatSTP326 KB

Approvals+Certificates: RLK31-8-2500-IR/31/33/115-7M

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of Conformity / EU-KonformitätserklärungDOC-0535APDF129 KB

Associated Products: RLK31-8-2500-IR/31/33/115-7M

Mounting bracket fa
Mounting bracket narrowfa
Mounting bracket narrowfa
Mounting aid for round steel ø 12 mm or sheet 1.5 mm ... 3 mmfa
Mounting bracket for mounting on flat surfaces with 2 M4 screwsfa
Stainless steel mounting bracket with adjustable half clamp on the sidefa