Q3XTBLD-Q8: 91638 - Banner Laser Contrast Sensor
Banner Q3XTBLD-Q8 is a laser contrast sensor with 300 mm sensing range and 250 µs response time for high-speed detection. This Q3XTBLD-Q8 Banner Laser Contrast Sensor supports bipolar NPN and PNP outputs, IP67/IP68/IP69K protection, 5-pin M12 Euro-style quick disconnect, rugged nickel-plated zinc M18 housing, and angled three-digit LED display for contrast feedback. It belongs to Banner under the Banner Photo Sensor category within the Q3X Series for industrial automation in India.

| Brand | Banner |
| Product Type | Photo sensor |
| Model Number | Q3XTBLD-Q8 |
Banner Laser Contrast Sensor Q3XTBLD-Q8, 91638 Technical Specifications:
| Specification | Value |
|---|---|
| IP Rating | IP67, IP68, IP69K |
| Sensing Beam | Visible Red Laser |
| NEMA / UL Type Rating | NEMA 4X |
| Sensing Mode (Detailed) | Diffuse/Background Suppression |
| Housing Style | Rectangular w/M18 Mount |
| Primary Housing Material | Nickel-Plated |
| Laser Classification | Class 2 |
| Input Output | Discrete |
| Connection Type | M12 |
| Max Sensing Distance (mm) | 300 |
| Outputs | Bipolar (NPN & PNP) |
| Power Supply | 10-30 V dc |
| Adjustments | Teach Button |
| Max Op Temp (°C) | 50 |
| Min Op Temp (°C) | -10 |
| Number of Pins | 5 |
| Output response time (ms) | 0.25 |
| Small Visible Spot | Laser |
| Sensing Beam Wavelength | 655 |
| Delay at Power-up (ms) | 1000 |
| Repeatability (µs) | 60 |
| Max Op Relative Humidity | 95% @ 55°C |
| Lens Material | Acrylic |
| Barrel Diameter (mm) | 18 |
| Indicator | LEDs |
The Q3XTBLD-Q8 Banner Laser Contrast Sensor from Banner is part of the Q3X Series used in industrial automation systems. The Q3XTBLD-Q8 provides a 0–300 mm sensing range and 250 µs response time, enabling reliable detection on fast-moving materials. It integrates bipolar NPN and PNP outputs and supports washdown environments with IP69K-rated protection. The nickel-plated zinc housing and three-digit LED display ensure stable performance and clear setup feedback in control panels and production lines.
In conveyor, packaging, and assembly applications, the Banner Laser Contrast Sensor Q3XTBLD-Q8 is used for detecting color marks, print contrast, or object transitions. The fast response supports up to 2,000 detection events per second, helping maintain accurate timing in automated processes. Bipolar outputs simplify integration with PLC systems, while the M12 quick-disconnect ensures secure electrical connection. High ingress protection ratings allow installation in humid, dusty, or washdown environments common in manufacturing plants.
The Q3XTBLD-Q8 within the Q3X Series reinforces Banner’s structured sensing platform for contrast detection tasks. With 300 mm sensing range, 250 µs response, bipolar outputs, and IP69K protection, the Q3XTBLD-Q8 Banner Laser Contrast Sensor supports consistent detection performance in demanding automation systems across India.




