Serviceline Industrial Sensors
Serviceline Explosion Protection

Print mark contrast sensor DK10-LAS/35/79b

  • Laser print mark contrast sensor for recording very small print marks
  • Laser class 2, eyesafe
  • Adjustable sensitivity
  • 30 µs response time, suitable for extremely rapid scanning processes

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  DK10-LAS/35/79b

Product Description
Print mark contrast sensor, 800 mm detection range, red laser light, laser class 2, light/dark on, sensitivity adjuster, push-pull output, analog output, M12 plug
General specifications
Sensor range800 mm
Detection range3 ... 800 mm
Light sourcelaser diode
Light typemodulated visible red light
Laser nominal ratings
Laser class2
Wave length650 nm
Beam divergence< 1.5 mrad
Pulse length1.5 µs
Repetition rate108.7 kHz
max. pulse energy2.1 nJ
Light spot representationapprox. 2 mm at a distance of 800 mm
Ambient light limit
Continuous light40000 Lux
Functional safety related parameters
MTTFd550 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)60 %
Indicators/operating means
Function indicatorLED yellow: lights up if receiver is lit (light on), lights up if receiver is not lit (dark on)
Control elementsLight-on/dark-on changeover switch, sensitivity adjuster
Electrical specifications
Operating voltage10 ... 30 V DC
Ripple10 %
No-load supply current≤ 55 mA
Test inputemitter deactivation with +Ub
Switching typelight/dark on switchable
Signal outputPush-pull output, short-circuit protected, reverse polarity protected
Switching voltagePNP: UB - 2.5 V / NPN: URest 1.5 V
Switching currentmax. 200 mA
Measurement outputAnalog output 0.3 ... 10 mA, (RL ≤ 600 Ohm)
Switching frequency16.5 kHz
Response time30 µs
Product standardEN 60947-5-2
Laser safetyIEC 60825-1:2007
Compliance with standards and directives
Standard conformity
Shock and impact resistanceIEC / EN 60068. half-sine, 40 g in each X, Y and Z directions
Vibration resistanceIEC / EN 60068-2-6. Sinus. 10 -150 Hz, 5 g in each X, Y and Z directions
Approvals and certificates
UL approvalcULus Listed , Class 2 power source
CCC approvalCCC approval / marking not required for products rated ≤36 V
Ambient conditions
Ambient temperature-10 ... 50 °C (14 ... 122 °F)
Storage temperature-20 ... 75 °C (-4 ... 167 °F)
Mechanical specifications
Housing width33 mm
Housing height85.6 mm
Housing depth60.8 mm
Degree of protectionIP67
Connection5-pin, M12 x 1 connector
HousingPC (glass-fiber-reinforced Makrolon)
Optical faceglass
Mass200 g

Documents: DK10-LAS/35/79b

Instruction leafletsLanguageFile TypeFile Size
Instruction leaflet / Beipackzettel ALLPDF445 KB

Approvals+Certificates: DK10-LAS/35/79b

CertificatesCertificate No.File TypeFile Size
EU Pepperl+FuchsPF08CERT1244PDF503 KB
US CA UL General PurposeE87056LINK---

Associated Products: DK10-LAS/35/79b


Female cordset, M12, 5-pin, PVC cablefa

Female cordset, M12, 5-pin, PVC cablefa
Right-Angled Mounting Bracketfa
Flat Mounting Bracketfa

Function: DK10-LAS/35/79b

The contrast sensor series DK10, DK2X, DKE2X and DK3X have an extreme robust and IP67 tight industrial standard housing with eight M5 metal reinforced inserts for sensor mounting. The lenses are made of high grade glass. All sensors offer different light spot shapes and orientations and have powerful push-pull outputs (NPN/PNP/push-pull).

The DK10 sensor series offers laser and LED light sources, a manual sensitivity adjustment and high sensing ranges up to 800 mm.

The DK20/DK21/DKE2X standard contrast sensor series offers a very good contrast recognition and are available in extreme robust stainless-steel housings (DKE).

The DK31/DK34/DK35 sensor series is designed for cutting edge contrast recognition at highest sensitivity level.

The series DK20/DK34 offer a static Teach-In, the DK21/DKE21/DK31/DK35 series offer a dynamic Teach-In.