Sick GRTB18-N1187 Photoelectric Sensor
Sick GRTB18-N1187 photoelectric sensor offers background suppression with 150 mm range NPN output IP67 housing industrial automation applications environments. This Sick 4-wire Background Suppression Sensor uses visible red LED light at 445 nm wavelength, provides a focused Ø 7 mm light spot, and operates on 10–30 V DC supply with 1,000 Hz switching frequency. It belongs to Sick sensing solutions, listed under Sick Photoelectric Sensors and the GR Series used in industrial automation.
| Brand | Sick |
| Product Type | Photolectric Sensor |
| Product | GRTB18-N1187 |
Sick GRTB18-N1187 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric proximity sensor |
| Functional principle detail | Background suppression |
| Dimensions (W x H x D) | 18 mm x 18 mm x 71.5 mm |
| Housing design (light emission) | Cylindrical |
| Thread diameter (housing) | M18 x 1 |
| Optical axis | Axial |
| Sensing range max. | 3 mm ... 300 mm |
| Sensing range | 20 mm ... 150 mm |
| Type of light | Visible red light |
| Light source | LED |
| Light spot size (distance) | Ø 7 mm (100 mm) |
| Wave length | 445 nm |
| Adjustment | Potentiometer |
| Indication | LED green, LED yellow |
| Supply voltage UB | 10 V DC ... 30 V DC |
| Ripple | < 5 Vpp |
| Current consumption | 30 mA |
| Switching Output | NPN |
| Switching mode | Light/dark switching 3) |
| Signal voltage PNP HIGH/LOW | VS - (≤ 3 V) / approx. 0 V |
| Output current Imax. | ≤ 100 mA 3) |
| Response time | < 500 µs 4) |
| Switching frequency | 1,000 Hz 5) |
| Connection type | Cable, 4-wire, 2 m 6) |
| Protection class | III |
| Housing material | Plastic, ABS |
| Optics material | Plastic, PMMA |
| Enclosure rating | IP67 |
| Items supplied | Fastening nuts (2 x) |
| Ambient operating temperature | –25 °C ... +55 °C 10) |
| Ambient temperature, storage | –40 °C ... +70 °C |
The GRTB18-N1187 Sick 4-wire Background Suppression Sensor is a photoelectric proximity sensor designed for controlled short-range detection. The GRTB18-N1187 Sick 4-wire Background Suppression Sensor supports a 20–150 mm sensing range, stable NPN switching output, and background suppression for precise object detection. As part of the GR Series, it is commonly applied in industrial automation systems requiring reliable sensing performance.
In industrial environments, the GRTB18-N1187 is used on conveyors, packaging machines, automated assembly lines, and material handling equipment. Background suppression minimizes false detection from reflective backgrounds, ensuring consistent operation. The <500 µs response time and 1,000 Hz switching frequency allow accurate detection in fast-moving processes, while the M18 cylindrical housing simplifies mechanical integration.
The GRTB18-N1187 from Sick is built for dependable operation in industrial automation. With IP67 enclosure rating, controlled current consumption, and durable construction, it delivers stable performance over long operating cycles. As a GR Series photoelectric sensor, the GRTB18-N1187 aligns with Sick sensing standards and supports consistent background suppression detection across varied industrial applications.
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