SICK G2F photoelectric sensor – Ultra-Thin miniature sensor for precise detection in confined spaces
Overview:
The SICK G2F photoelectric sensor is an ultra-thin miniature sensor from the G2 series, with a housing thickness of only 3.5 mm. It is specifically designed for applications with extremely limited installation space and can be easily integrated into compact machines without compromising mechanical design.
Thanks to Background Suppression (BGS) technology combined with PinPoint LED, the G2F delivers stable detection of very small objects (from 0.1 mm), even on challenging surfaces such as black, glossy, or low-reflectivity materials. Its IP67 protection rating ensures reliable operation in industrial environments exposed to dust, oil, and moisture.
Product overview – SICK G2F Photoelectric Sensor
The SICK G2F belongs to the G2 family of miniature photoelectric sensors and is the Flat (planar) version optimized for high-precision applications in ultra-tight spaces. Compared to the G2S (Slim) variant, the G2F features a flat housing design, making it ideal for direct surface mounting or positions with severe height restrictions.
The sensor operates on the photoelectric proximity principle using Background Suppression (BGS), which reliably distinguishes the target object from the background. Depending on the model, it uses red, blue, or infrared light. It offers flexible output options (PNP/NPN) and connections (cable or M8 connector), enabling seamless integration into automation systems.
Key Features:
- Ultra-thin dimensions: 14 × 24 × 3.5 mm (Flat housing)
- Sensing range: 1 – 35 mm (model dependent)
- Light source: PinPoint LED (red / blue / IR)
- Protection rating: IP67
- Connection: 2 m cable or M8 3-pin connector
Technical specifications – SICK G2F photoelectric sensor
| Parameter |
Value |
| Product Line |
G2F (Flat housing) |
| Dimensions (W×H×D) |
14 × 24 × 3.5 mm |
| Housing Material |
Plastic |
| Sensor Principle |
Photoelectric proximity sensor (BGS) |
| Technology |
Background Suppression (BGS) with PinPoint LED |
| Light Source |
PinPoint LED |
| Light Type |
Red / Blue / IR |
| Sensing Range |
1–9 mm / 1–18 mm / 1–35 mm (model dependent) |
| Minimum Detectable Object |
0.1 mm |
| Operating Voltage |
10 – 30 V DC |
| Output |
PNP / NPN, Light/Dark switching |
| Response Time |
< 0.6 ms |
| Switching Frequency |
~800 Hz – 1 kHz |
| Adjustment |
Fixed / Potentiometer (model dependent) |
| Connection |
2 m cable or M8 3-pin |
| Protection Rating |
IP67 |
| Operating Temperature |
-20°C … +50°C |
Source: SICK G2 Product Overview. Download official datasheet.
Representative Models – SICK G2F
| Model |
Sensing Range |
Output |
Connection |
Light Type |
Switching Mode |
| GTB2F-N1111 |
1 – 18 mm |
NPN |
2 m cable, 3-wire |
Visible Red |
Light switching |
| GTB2F-N1131 |
1 – 35 mm |
NPN |
2 m cable, 3-wire |
Visible Red |
Light switching |
| GTB2F-N1311 |
0 – 16 mm |
NPN |
2 m cable, 3-wire |
Visible Blue |
Light switching |
| GTB2F-E1311 |
0 – 16 mm |
NPN |
2 m cable, 3-wire |
Visible Blue |
Dark switching |
Industrial Applications of the SICK G2F Photoelectric Sensor
The G2F is particularly well-suited for applications requiring compact size and high detection accuracy:
- Compact Machinery & Automation: Installation in robot grippers, inspection jigs, and space-constrained positions.
- SMT & Electronics Production Lines: Precise detection of tiny SMD components thanks to the focused PinPoint light spot.
- Conveyor Systems & Presence Detection: Stable performance on any surface type due to BGS technology.
- High-Speed Printing & Office Equipment: Blue light versions excel with dark or low-reflectivity materials.
- Automotive & Precision Engineering: Reliable operation in oily or solvent-rich environments.
AUMI Implementation Experience: AUMI has supplied hundreds of G2 series photoelectric sensors to electronics, automotive, and pharmaceutical plants in Hanoi and Ho Chi Minh City, providing expert model selection and installation support.
Comparison: G2F (Flat) vs G2S (Slim)
| Criteria |
G2F (Flat) |
G2S (Slim) |
| Housing Shape |
Flat, surface mounting |
Slim, edge mounting |
| Dimensions |
14 × 24 × 3.5 mm |
10 × 27 × 3.5 mm |
| Advantages |
Extremely thin, ideal for flat/routed mounting |
Narrow width, perfect for vertical slots |
| Typical Sensing Range |
1–35 mm |
Up to 120 mm (with potentiometer) |
| Best For |
Electrical cabinets, inspection jigs, compact machines |
Conveyors, machine doors, longer range needs |
Note: Choose G2F Flat when installation space is limited in thickness but wider horizontally. Choose G2S Slim for narrow vertical slots or when longer sensing distance is required. Contact AUMI for specific model recommendations.
Frequently Asked Questions (FAQ)
Q1: What applications is the SICK G2F photoelectric sensor suitable for?
A: The G2F is ideal for compact machinery, SMT production lines, robot grippers, electronic component inspection jigs, small conveyors, industrial printers, and any installation space with severe height restrictions (only 3.5 mm thick).
Q2: Can the G2F reliably detect black or dark-colored objects?
A: Yes. Thanks to Background Suppression (BGS) combined with PinPoint LED technology, the G2F provides stable detection of black, glossy, or low-reflectivity objects.
Q3: What is the difference between G2F (Flat) and G2S (Slim)?
A:
- G2F (Flat): Planar design (14 × 24 × 3.5 mm), optimized for flat surfaces and height-restricted spaces.
- G2S (Slim): Narrow profile (10 × 27 × 3.5 mm), suitable for vertical slots and generally offers longer sensing ranges (up to 120 mm).
Q4: What are the response time and switching frequency of the G2F?
A: Response time is approximately 0.5 – 0.6 ms, with a switching frequency of up to ~1 kHz, making it suitable for high-speed applications.
Q5: Should I choose red or blue light models?
A:
- Red light: Most versatile and widely used for general applications.
- Blue light: Superior performance on dark, glossy, or low-reflectivity surfaces.
- Infrared (IR): Recommended when eye safety is a concern or for detecting transparent objects.
Contact AUMI to Purchase SICK G2F Photoelectric Sensors
AUMI – Official Distributor of SICK in Vietnam. Full manufacturer warranty, complete CO/CQ documentation, 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, No. 2 30-4 Street, Hoa Cuong Ward
