Serviceline Industrial Sensors
Serviceline Explosion Protection

Diffuse mode sensor RLK39-8-2000/31/40a/116

  • Infrared light
  • Light-on/dark-on, switchable
  • Degree of protection IP67

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  RLK39-8-2000/31/40a/116

Product Description
Diffuse mode sensor
General specifications
Detection range0 ... 2000 mm
Adjustment range200 ... 2000 mm
Reference targetstandard white 200 mm x 200 mm
Light sourceIRED
Light typemodulated infrared light
Ambient light limitIEC / EN 60947-5-2 , 10000 Lux
Functional safety related parameters
MTTFd803 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)0 %
Indicators/operating means
Function indicatorLED yellow: switching state
LED red: pre-fault indication
Control elementsSensing range adjuster, light-on/dark-on changeover switch
Electrical specifications
Operating voltage12 ... 240 V DC
24 ... 240 V AC (50 ... 60 Hz)
Ripple10 %
No-load supply current≤ 35 mA
Protection classII, rated voltage ≤ 250 V AC with pollution degree 1-2 according to IEC 60664-1 Caution!
The protection class 2 is only valid when the terminal compartment is closed. output circuit has basic insulation to control circuit according to IEC/EN 61140
Power consumption≤ 3 VA
Time delay before availability≤ 50 ms
Switching typelight/dark on
Signal output1 relay output
Switching voltagemax. 240 V AC ; 150 V DC
Switching currentmax. 3 A
Switching powerDC: max. 90 W AC: max. 750 VA
Switching frequency≤ 25 Hz
Response time≤ 20 ms
Product standardEN 60947-5-2
Approvals and certificates
EAC conformityTR CU 020/2011
TR CU 004/2011
CCC approvalCertified by China Compulsory Certification (CCC)
Ambient conditions
Ambient temperature-25 ... 55 °C (-13 ... 131 °F)
Storage temperature-40 ... 70 °C (-40 ... 158 °F)
Mechanical specifications
Housing width25 mm
Housing height64 mm
Housing depth75 mm
Degree of protectionIP67
Connectionterminal compartment PG9, ≤ 2.5 mm2
Optical facePMMA
Massapprox. 110 g
General information
Scope of deliveryMounting aid


ECLASS 11.027270903
ECLASS 10.0.127270903
ECLASS 9.027270903
ECLASS 8.027270903
ECLASS 5.127270903
ETIM 8.0EC001821
ETIM 7.0EC001821
ETIM 6.0EC001821
ETIM 5.0EC001821
UNSPSC 12.139121528

Documents: RLK39-8-2000/31/40a/116

Instruction leafletsLanguageFile TypeFile Size
Instruction leaflet / Beipackzettel ALLPDF484 KB

CAD+CAE: RLK39-8-2000/31/40a/116

CADFile TypeFile Size
3-D model / 3-D-ModellSTP182 KB
CAD Portal / CAD PortalLINK---

Associated Products: RLK39-8-2000/31/40a/116

Mounting bracket for RL39 series Sensorsfa
R10x and R20x series photoelectric sensors

For the first time, a consistent solution range of photoelectric functional principles and innovative technologies is available in identical housings. Users benefit from a uniform operating concept across the entire portfolio. Discover the R100, R101, R103, R200 and R201 series ...

ML100 Photoelectric Sensor

Whether glass, solar wafers or printed circuit boards: The photoelectric sensors of the ML100 series are precisely tailored to meet the requirements of various complex detection tasks. Learn more about the portfolio and find the ideal sensor for your application ...