SICK GL6G-N1211 6m NPN Polarized Retro-Reflective Photoelectric Sensor – Genuine Product
Highlights:
- GL6G-N1211 is a polarized retro-reflective photoelectric sensor from SICK’s G6 series, NPN output, maximum sensing range 6 m
- Integrated polarization filter (‘G’ in GL6G) eliminates false signals from shiny object surfaces – only responds to the dedicated SICK reflector
- 2 m PVC cable directly integrated – no separate connector needed, simpler installation
- IP67 enclosure rating for dusty and humid industrial environments
- Switching frequency 1,000 Hz, response time ≤ 625 µs for high-speed detection
- Supply voltage 10 – 30 VDC, compatible with most PLC systems
The GL6G-N1211 is a polarized retro-reflective photoelectric sensor designed by SICK (Germany) to detect objects – including those with shiny or reflective surfaces – without generating false signals. The key differentiator from the standard GL6-N1211 is the integrated polarization filter (indicated by ‘G’ in GL6G), which ensures the sensor only responds to the specialized SICK reflector, ignoring reflections from the product’s own surface.
Overview of SICK GL6G-N1211 Polarized Photoelectric Sensor
The GL6G-N1211 belongs to SICK’s global G6 miniature sensor series, built with SICK’s proprietary ASIC technology. The ‘G’ designation in ‘GL6G’ indicates the integrated polarization filter – a specialized optic for applications involving glossy, metallic, or transparent objects that would cause standard retro-reflective sensors to malfunction.
Operating principle: The sensor emits a polarized PinPoint LED beam. The dedicated SICK reflector returns the light with its polarization plane rotated 90°. The polarization filter at the sensor only passes this rotated light (from the reflector), blocking light reflected at the same angle from shiny object surfaces. Result: zero false detections from glossy products.
5 Key Specifications:
- Sensing range: 0.03 – 6 m (max) with SICK dedicated reflector
- Output: NPN, max load current 100 mA
- Connection: Integrated 2 m PVC cable (3-wire)
- Protection rating: IP67
- Supply voltage: 10 – 30 VDC
Technical Specifications – SICK GL6G-N1211
| Parameter |
Value |
| Model |
GL6G-N1211 |
| Part Number |
1059925 |
| Product Series |
G6 – Photoelectric Sensors |
| Operating Principle |
Polarized retro-reflective (dual lens) |
| Sensing Range |
0.03 – 6 m (max), typical 0.07 – 5 m (with PL80A) |
| Light Source |
PinPoint LED, red light 650 nm |
| Filter |
Polarization filter (integrated) |
| Output Type |
NPN |
| Switching Mode |
Light/Dark switching (selectable) |
| Max Output Current |
100 mA |
| Supply Voltage |
10 – 30 VDC |
| Current Consumption |
≤ 30 mA |
| Switching Frequency |
1,000 Hz |
| Response Time |
≤ 625 µs |
| Adjustment |
Potentiometer |
| Connection |
Integrated PVC cable 2 m, 3-wire |
| Enclosure Rating |
IP67 |
| Circuit protection A, B, D |
Consistent omission |
| MTTFD |
1,630 years |
| Housing Material |
Plastic ABS/PC, PMMA lens |
| Dimensions (W × H × D) |
12 mm × 31.5 mm × 21 mm |
| Operating Temperature |
-25°C to +55°C |
| Storage Temperature |
-40°C to +70°C |
| Certifications |
CE, cULus, RoHS |
| Origin |
SICK AG, Waldkirch, Germany |
Specifications sourced from SICK Product Datasheet GL6G-N1211
Industrial Applications of GL6G-N1211
Thanks to its polarization filter, the GL6G-N1211 outperforms standard retro-reflective sensors in applications involving reflective objects:
- Glass bottle detection in beverage manufacturing: Glass bottles are transparent and may allow light to pass through without returning enough signal to a standard sensor. GL6G-N1211’s polarization filter reliably distinguishes reflector signals from bottle-surface reflections, ensuring accurate detection.
- Aluminum foil and metallic packaging lines: Highly reflective aluminum surfaces can create false triggers in standard retro-reflective sensors. GL6G-N1211 eliminates this issue, ensuring accurate product counting on high-speed lines.
- Printing & hot-stamping: Detects glossy paper, plastic films with gold/silver hot-stamp. The polarization filter ignores specular reflections from these surfaces.
- Cold storage & cleanroom door control: Environments requiring IP67 and straightforward wiring benefit from the GL6G-N1211’s integrated 2 m cable – no separate connector means fewer contamination entry points.
- PE-wrapped pallet detection: Transparent stretch-wrap film has low reflectivity and is easily missed by standard sensors. GL6G-N1211 ensures consistent detection by relying solely on the dedicated reflector signal.
GL6G-N1211 vs GL6-N1211 – When Do You Need a Polarization Filter?
| Criteria |
GL6G-N1211 (1059925) |
GL6-N1211S27 |
Recommendation |
| Polarization filter |
Yes |
No |
GL6G for shiny objects |
| Detection of shiny/glossy objects |
Excellent – no false signals |
Prone to false triggers |
GL6G |
| Detection of matte/dark objects |
Good |
Good |
Either |
| Switching frequency |
1,000 Hz |
1,000 Hz |
Same |
| Response time |
≤ 625 µs |
≤ 625 µs |
Same |
| Sensing range |
0.03 – 6 m |
0.03 – 6 m |
Same |
| Connection |
2 m PVC cable |
2 m PVC cable |
Same |
| Cost |
Slightly higher |
Lower |
– |
Recommendation:
Choose the GL6G-N1211 for glass bottles, aluminum foil, glossy packaging, transparent films, or highly reflective surfaces.
Choose the standard GL6-N1211 for normal (matte) objects to save cost.
Buy Genuine SICK GL6G-N1211 from AUMI
You can purchase the genuine SICK GL6G-N1211 at AUMI – the official authorized SICK distributor in Vietnam – with competitive pricing, 12-month warranty, and 24/7 technical support.
- 100% genuine SICK product with full CO/CQ certificates
- 12-month manufacturer warranty, 24/7 technical hotline
- Nationwide delivery, stock available in Hanoi and Ho Chi Minh City
Frequently Asked Questions – SICK GL6G-N1211 (FAQ)
Q1: How much does the SICK GL6G-N1211 photoelectric sensor cost?
A: The price of GL6G-N1211 depends on order quantity. Contact AUMI at hotline 0917 991 589 for the best quotation and application consultation.
Q2: Where to buy genuine SICK GL6G-N1211 in Vietnam?
A: AUMI is the official authorized SICK distributor in Vietnam, supplying GL6G-N1211 with full CO/CQ certificates and 12-month warranty. Visit aumi.com.vn or call our hotline.
Q3: What makes the GL6G-N1211 different from the standard GL6-N1211?
A: The GL6G-N1211 has an integrated polarization filter that prevents false detections from shiny surfaces. When detecting glass bottles, aluminum foil, or glossy packaging, the standard GL6-N1211 may trigger false signals, while the GL6G-N1211 reliably distinguishes between the reflector signal and product surface reflections.
Q4: Which reflector is compatible with the GL6G-N1211?
A: The GL6G-N1211 is compatible with SICK’s dedicated retro-reflectors (such as the PL80A or PL40A series). These retroreflective prism mirrors are specifically engineered to work with polarized sensors. Contact AUMI for reflector selection guidance.
Q5: Does the GL6G-N1211 come with a warranty?
A: Yes. Products purchased from AUMI include a 12-month manufacturer warranty, 24/7 technical support, and return/replacement for factory defects.
Contact AUMI to Purchase SICK GL6G-N1211
AUMI – Official SICK Distributor in Vietnam. Genuine products, full CO/CQ, 24/7 technical support.
📞 Hotline: 0917 991 589 (Hanoi) | 0932 226 100 (Ho Chi Minh City)
📧 Email: [email protected]
🌐 Website: https://aumi.com.vn/
AUMI Offices:
- Hanoi: B44, Garden Villa Zone, Viet Hung Urban Area, Long Bien District
- Ho Chi Minh City: Floor 2, HS Building, 260/11 Nguyen Thai Binh, Tan Binh District
- Da Nang: Floor 9, PV Bank Building, 2 Street 30-4, Hoa Cuong Ward
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