Photoelectric retro-reflective sensor GL10G-N1251 – 12 m, NPN, Transparent Object Detection
Overview
The GL10G-N1251 is a high-performance retro-reflective photoelectric sensor from SICK’s G10 Logistik series, specialized in detecting transparent objects. It offers a sensing range of up to 12 m when used with the PL80A reflector, NPN output, IP67 protection, and comes with a pre-attached 2 m PVC cable.
This model is widely used in food & beverage, pharmaceutical, packaging, and logistics industries for stable detection of PET bottles, glass containers, films, and transparent plastic packaging.
Product Overview
The GL10G-N1251 operates on the retro-reflective principle with dual-lens technology and a polarizing filter, delivering superior accuracy in detecting transparent objects and challenging reflective surfaces.
It features a PinPoint red LED (625 nm) light source, selectable Light-ON/Dark-ON modes, and sensitivity adjustment via a 270° potentiometer. Its compact housing (20 × 50 × 39 mm) makes it easy to install in space-constrained environments such as packaging machines and automated conveyor systems.
The N1251 variant is equipped with a fixed 2 m 3-wire PVC cable, making it ideal for permanent installations where vibration resistance and connection stability are critical.
Key Specifications:
- Sensing Range: 0.3 m – 9.5 m (PL80A) / 0.3 m – 8 m (P250)
- Maximum Sensing Range: 0.15 m – 12 m (PL80A) / 0.15 m – 10 m (P250)
- Output: NPN, selectable Light/Dark switching
- Special Application: Transparent object detection
- Protection Rating: IP67
- Operating Temperature: -30°C … +60°C
- Connection: 3-wire PVC cable, 2 m
Technical Specifications of the Photoelectric retro-reflective sensor GL10G-N1251
| Parameter |
Value |
| Model |
GL10G-N1251 (Part No. 1064705) |
| Operating Principle |
Retro-reflective (dual lens) |
| Dimensions (W x H x D) |
20 mm × 50 mm × 39 mm |
| Sensing Range |
0.3 – 9.5 m (PL80A) / 0.3 – 8 m (P250) |
| Maximum Sensing Range |
0.15 – 12 m (PL80A) / 0.15 – 10 m (P250) |
| Light Source |
PinPoint LED, red, 625 nm (avg. lifetime 100,000 h at 25°C) |
| Light Spot Size |
Ø 58 mm at 5 m |
| Special Feature |
Transparent object detection |
| Supply Voltage |
10 V DC … 30 V DC |
| Current Consumption |
20 mA |
| Output |
NPN |
| Switching Mode |
Light-ON / Dark-ON (selectable) |
| Max. Load Current |
≤ 100 mA |
| Response Time |
≤ 1 ms |
| Switching Frequency |
500 Hz |
| Adjustment |
270° potentiometer |
| Connection |
3-wire cable, 2 m |
| Housing Material |
ABS/PMMA |
| Weight |
90 g |
| Polarizing Filter |
Yes |
| Protection Rating |
IP67 |
| Operating Temperature |
-30°C … +60°C |
| Storage Temperature |
-40°C … +70°C |
| EMC Compliance |
EN 60947-5-2 |
| Certifications |
EU/UK/ACMA Declaration of Conformity, cULus, China RoHS, UL325, DIN EN 62471 |
Source: Official SICK datasheet for GL10G-N1251 (Part No. 1064705). Download here: SICK Datasheet
Industrial Applications of the GL10G-N1251
- Food & Beverage: Reliable detection of transparent glass and plastic bottles on packaging lines.
- Pharmaceuticals: Presence detection of transparent vials, ampoules, and containers in cleanroom-compatible environments.
- Packaging & Printing: Detection of PE/PP films and label inspection.
- Electronics Manufacturing: Detection of glass panels and insulating plastics.
- Logistics: Object presence monitoring at automated sorting gates and conveyor systems.
Quick Comparison: GL10G-N1251 vs GL10G-N1252
| Criteria |
GL10G-N1251 |
GL10G-N1252 |
| Part Number |
1064705 |
1065895 |
| Output |
NPN |
NPN |
| Connection |
3-wire PVC cable 2 m |
3-wire PVC cable 2 m |
| Included Accessories |
None (purchased separately) |
P250 reflector + BEF-G10DC01 bracket |
| Best For |
Fixed installations where flexibility and cost optimization are needed |
Quick installation projects requiring full kit |
Main Difference:
The GL10G-N1251 is the sensor-only version, ideal when reflectors and brackets are already available or when specific reflector types are preferred. The GL10G-N1252 is a complete kit including the P250 reflector and mounting bracket.
All other technical specifications (output type, sensing range, IP67 rating, etc.) are identical.
Frequently Asked Questions (FAQ)
Q1. Can the GL10G-N1251 detect transparent plastic bottles and glass?
- Yes. It is specifically engineered for transparent object detection using dual-lens technology and a polarizing filter.
Q2. What is the maximum sensing distance?
- Up to 12 m when paired with the recommended PL80A reflector.
Q3. Does it have NPN or PNP output?
- NPN output with selectable Light-ON/Dark-ON function.
Q4. Is it suitable for food and pharmaceutical environments?
- Yes. With IP67 protection, it performs reliably in washdown and humid conditions common in these industries.
Q5. Should I choose the cable version (N1251) or M8 connector version?
- Choose the GL10G-N1251 (cable version) for fixed installations and cost savings. Choose M8 connector versions (e.g., GL10G-N4211) for applications requiring frequent replacement or easier maintenance.
Contact Information for purchasing the photoelectric retro-reflective sensor GL10G-N1251
AUMI – Official authorized distributor of SICK sensors in Vietnam. Full manufacturer warranty, CO/CQ documents, and 24/7 technical support.
Hotline: 0917 991 589 (Hanoi) | 0932 226 100 (Ho Chi Minh City)
Email: [email protected] Website: https://aumi.com.vn/
Addresses:
- Hanoi: B44, Villa Area, Viet Hung Urban Area, Viet Hung Ward
- Ho Chi Minh City: 2nd Floor, HS Building, 260/11 Nguyen Thai Binh, Bay Hien Ward
- Da Nang: 9th Floor, PV Bank Building, 2 Road 30-4, Hoa Cuong Ward
