SICK GR18 Inox Cylindrical Photoelectric Sensor – Chemical Resistant, IP69K, High Hygiene
Overview:
- Premium V4A stainless steel housing with IP67/IP68/IP69K rating – withstands high-pressure washdown and aggressive cleaning chemicals
- Wide range of detection principles suitable for nearly all industrial applications
- PinPoint LED (red) / LED (red or infrared) depending on model
- Compact M18 design for easy installation in tight spaces
- Outstanding durability in harsh environments: food & beverage, pharmaceuticals, chemicals, and outdoor applications
General Overview of SICK GR18 Inox Photoelectric Sensor
The GR18 Inox is SICK’s M18 cylindrical photoelectric sensor series, available in multiple operating principles: Background Suppression, Energetic (Energetic Reflection), Retro-reflective, and Through-beam. The housing is made of stainless steel combined with a special protective coating, chemical-resistant seals, and high-performance adhesive, ensuring watertight integrity and long-term reliability in hygiene-critical applications.
Key Features:
- Housing: Stainless steel V4A (1.4404 / 316L) + special protective coating (with chemical-resistant O-ring seals)
- Sensing principle: Photoelectric
- Dimensions (W x H x D): 18 mm x 18 mm x 73.5 mm
- Maximum sensing range: 3 mm … 300 mm
- Light source: PinPoint LED
- Light type: Visible red light
- Protection rating: IP67 / IP68 / IP69K
- Sensitivity adjustment: 270° potentiometer
- Special applications: Chemical and washdown areas
Technical Specifications – GR18 Inox SICK
| Parameter |
Value |
| Product family |
GR18 Inox – Cylindrical Photoelectric Sensor M18 |
| Housing dimensions (W × H × D) |
18 mm x 18 mm x 73.5 mm
18 mm x 18 mm x 71.5 mm
18 mm x 18 mm x 38.1 mm
18 mm x 18 mm x 55.9 mm |
| Operating principles |
Background Suppression, Energetic, Retro-reflective, Through-beam |
| Housing material |
Stainless steel V4A (1.4404 / 316L) + special coating |
| Light source |
PinPoint LED (red) / LED (red or infrared) (model dependent) |
| Light type |
Visible red light |
| Sensing range – Background Suppression |
3 mm … 300 mm |
| Sensing range – Energetic |
3 mm … 1,000 mm (red) / 3 mm … 550 mm (infrared) |
| Sensing range – Retro-reflective |
0.03 m … 7.2 m |
| Sensing range – Through-beam |
0 … 15 m |
| Protection rating |
IP67 / IP68 / IP69K (model dependent) |
| Supply voltage |
10 … 30 VDC |
| Output type |
PNP or NPN (model dependent) |
| Switching mode |
Light / Dark switching |
| Adjustment |
270° potentiometer or Fixed (model dependent) |
Data from SICK GR18 Product Overview
Ordering Information – Popular GR18 Inox Models
| Operating Principle |
Sensing Range |
Output |
Connection |
Type Code (Inox) |
Part No. |
| Background Suppression |
3 – 100 mm |
PNP |
4-wire cable, 2 m |
GRTB18S-P1131V |
1085820 |
| Background Suppression |
3 – 100 mm |
NPN |
M12 4-pin |
GRTB18S-N2431V |
1085748 |
| Background Suppression |
3 – 200 mm |
PNP |
M12 4-pin |
GRTB18S-P2421V |
1085745 |
| Background Suppression |
3 – 300 mm |
PNP |
Cáp 4-wire, 2 m |
GRTB18S-P1112 |
1076099 |
| Energetic (red) |
3 – 115 mm |
PNP |
4-wire cable, 2 m |
GRTE18S-P1112V |
1085678 |
| Energetic (red) |
5 – 550 mm |
PNP |
4-wire cable, 2 m |
GRTE18S-P1142V |
1085818 |
| Energetic (red) |
5 – 1,000 mm |
PNP |
M12 4-pin |
GRTE18S-P2462V |
1085680 |
| Through-beam |
0 m … 15 m |
NPN |
M12 4-pin |
GRSE18S-N2421V |
1085766 |
| Retro-reflective |
0.03 – 7.2 m |
PNP |
M12 4-pin |
GRL18S-P2431V |
1085706 |
| Retro-reflective |
0.03 – 7.2 m |
NPN |
4-wire cable, 2 m |
GRL18S-N1131V |
1085863 |
Applications of SICK GR18 Inox in Industry
Thanks to its stainless steel housing and IP69K rating, the GR18 Inox is particularly suitable for industries requiring strict hygiene standards and harsh chemical environments:
- Food & Beverage Plants: Withstands high-pressure washdown (IP69K) and cleaning agents containing alcohol or alkaline. Ideal for installation on bottling conveyors to detect cans, bottles, and boxes in wet, oily environments.
- Pharmaceutical & Cosmetic Plants: Meets GMP hygiene requirements with smooth, easy-to-clean surfaces that prevent bacterial buildup. Used for product detection on sterile filling and packaging lines.
- Outdoor & Marine Applications: High corrosion resistance makes it suitable for outdoor machinery, seaports, and environments with salt and high humidity.
- Chemical & Water Treatment Industry: Excellent resistance to oils, alcohols, and alkaline substances ensures stable operation in pumps, valves, and chemical processing lines.
- Automotive Assembly Lines: Flush-mount versions allow installation in tight recesses for detecting metal and plastic parts without obstructing movement.
Comparison: GR18 Inox vs Standard GR18 – Which One to Choose?
| Criteria |
GR18 Inox (Stainless Steel) |
Standard GR18 (Plastic/Metal) |
| Housing |
Stainless steel + special coating |
Plastic or standard metal |
| Protection rating |
IP67 / IP68 / IP69K |
IP67 |
| Chemical resistance |
Very high (Ecolab certified) – resists acids, alkalis, alcohols, oils, and industrial cleaners |
Limited resistance to corrosive chemicals |
| Hygiene suitability |
Suitable for GMP / HACCP |
Not recommended for high-hygiene areas |
| Environment |
Food, pharmaceutical, chemical, outdoor |
General indoor manufacturing |
| Cost |
Higher due to premium materials |
More economical for standard use |
Note: For dry, non-corrosive environments, choose the standard GR18 to optimize cost. For applications requiring regular high-pressure washing or exposure to aggressive chemicals, GR18 Inox is the mandatory choice.
Frequently Asked Questions (FAQ) about GR18 Inox SICK
Q1: How much does the GR18 Inox SICK sensor cost?
The price of GR18 Inox depends on the operating principle, sensing range, and connection type. Please contact AUMI hotline 0917 991 589 for the best quotation and technical consultation to select the right model.
Q2: Can GR18 Inox withstand chemicals?
Yes. The Inox version uses a stainless steel housing with special coating and chemical-resistant seals. It withstands alcohols, alkalis, and industrial oils. This is a major advantage over standard plastic or metal versions.
Q3: In which industries is GR18 Inox used?
SICK GR18 Inox is mainly used in food & beverage (bottling, canning), pharmaceuticals (sterile filling), cosmetics, water treatment, outdoor applications, and marine environments requiring high corrosion resistance.
Q4: What is the difference between GR18 Inox and standard GR18?
GR18 Inox (marked with “S” in the type code) features a stainless steel housing and IP69K protection, capable of withstanding high-pressure washdown and corrosive chemicals. Standard GR18 uses plastic or metal housing with IP67 rating, suitable for normal environments without strict hygiene requirements.
Q5: Where can I buy genuine SICK GR18 Inox sensors?
AUMI is the official distributor of SICK in Vietnam. We provide GR18 Inox with full CO/CQ certificates and 12-month official warranty. Contact hotline 0917 991 589 or visit aumi.com.vn for technical support and pricing.
AUMI – Official Distributor of GR18 Inox SICK in Vietnam Genuine products, full CO/CQ, 12-month warranty, 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, Long Bien District
- Ho Chi Minh City: 2nd Floor, HS Building, 260/11 Nguyen Thai Binh, Tan Binh District
- Da Nang: 9th Floor, PV Bank Building, No. 2 Road 30-4, Hoa Cuong Ward
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