KT8L-N3756 Contrast Sensors – SICK Sensor

Name: KT8L-N3756 Contrast Sensors - SICK Sensor - INOSAKI
SKU: SICK-1041352
Price: 892.50 USD
Availability: InStock

$ 892.50

Discover the SICK 1041352 (KT8L-N3756) laser contrast sensor. Featuring a 150mm sensing range, 17kHz switching frequency, and NPN output for precise mark detection.

SKU SICK-1041352 Category SICK KT8

Product Overview

Part Number: 1041352
Model Name: KT8L-N3756
Product Family: KT8 (Contrast Sensors)
Light Source: Laser, red (Visible red light, 655 nm)
Laser Class: II (IEC 60825-1)
Sensing Distance: 150 mm
Switching Output: NPN (High = Approx. UV / Low ≤ 2 V)
Connection Type: Male connector M12, 5-pin
Housing Material: Metal, zinc diecast

Product Description

The SICK 1041352 (KT8L-N3756) is a high-performance laser contrast sensor engineered for precision in high-speed automated environments. Utilizing a Class II red laser light source, this sensor provides a consistent and extremely small light spot of approximately 3 mm at its 150 mm focal point. This allows for the reliable detection of even the smallest contrast differences and print marks, regardless of the material’s background or glossiness.

The device is housed in a rugged zinc diecast enclosure with an IP67 rating, ensuring durability in harsh industrial conditions. It features advanced technical capabilities including a rapid 17 kHz switching frequency and a 30 µs response time, making it ideal for high-speed production lines. Users can easily configure the sensor via a manual teach-in button, supporting both static 2-point and dynamic teach-in modes. Additionally, it includes an integrated analog output (0.3 mA to 20 mA) for continuous monitoring of contrast values and automatic drift correction to maintain accuracy over long-term operation despite potential environmental changes.

Key Performance Features

Ultra-Fast Response: Features a 17 kHz switching frequency and 30 µs response time for high-speed mark detection.
Precision Targeting: Small Ø 3 mm laser light spot allows for detection of tiny marks on varied surfaces.
Advanced Teach-in: Supports static 2-point teach-in and dynamic (min/max) teach-in for flexible setup.
Automatic Drift Correction: Automatically adjusts to compensate for environmental changes or contamination on the lens/material.
Dual Output: Provides both NPN switching and a 0.3 mA … 20 mA analog output.
Robust Build: Zinc diecast housing with glass optics and IP67 enclosure rating for industrial resilience.

Ideal Applications

Printing Industry: High-precision detection of print marks on continuous webs or individual sheets.
Packaging Machinery: Monitoring the placement of labels and cutting marks on high-speed wrappers.
Electronics Production: Detecting small components or contrast-based assembly marks on PCBs.
Pharmaceuticals: Verifying the presence of codes or markings on small vials and medicine packaging.
Quality Control: General contrast-based sorting and inspection where long sensing distances are required.

Features

Dimensions (W x H x D)	30.4 mm x 53 mm x 80 mm
Sensing distance	150 mm ¹⁾
Housing design (light emission)	Large
Light source	Laser, red ²⁾
Laser class	II (EN 60825-1:2014), IEC 60825-1:2014
Wave length	655 nm
Light emission	Long side of housing
Light spot size	Ø 3 mm ³⁾
Light spot direction	Round
Operating distance	30 mm … 600 mm ⁴⁾
Adjustment	Teach-in button
Teach-in mode	Static 2-point teach-in Dynamic teach-in (min/max)
Function	Automatic drift correction

¹⁾ From front edge of lens.
²⁾ Average service life: 50,000 h at T_U = +25 °C.
³⁾ At focal point = sensing distance 150 mm.
⁴⁾ With respect to black-white contrast 6 % / 90 %.

Mechanics/electronics

Supply voltage	10 V DC … 30 V DC ¹⁾
Ripple	≤ 5 V_pp ²⁾
Current consumption	< 80 mA ³⁾
Switching frequency	17 kHz ⁴⁾
Response time	30 µs ⁵⁾
Jitter	< 15 µs
Switching output	NPN
Switching output (voltage)	NPN: HIGH = approx. U_V/ LOW ≤ 2 V
Analog output	0.3 mA … 20 mA
Output current I_max.	100 mA
Input, teach-in (ET)	NPN Teach: U < 2 V Run: U = 10 V … < U_V
Retention time (ET)	25 ms, non-volatile memory
Time delay	20 ms, adjustable
Connection type	Male connector M12, 5-pin
Protection class	II ⁶⁾
Circuit protection	U_V connections, reverse polarity protected Output Q short-circuit protected Interference pulse suppression
Enclosure rating	IP67
Weight	400 g
Housing material	Metal, zinc diecast
Optics material	Glass

¹⁾ Limit values when operated in short-circuit protected network: max. 8 A.
²⁾ May not exceed or fall below U_v tolerances.
³⁾ Without load.
⁴⁾ With light/dark ratio 1:1.
⁵⁾ Signal transit time with resistive load.
⁶⁾ Reference voltage DC 50 V.