Photoelectric sensors
GR18 Inox

Round, strong, rugged – M18 stainless steel sensor for wash-down applications

Your Benefits

  • Simple M18 thread design ensures quick and space-saving mounting
  • 3 mm flat, chemically-resistant material of the front screen offers a long service life, reducing maintenance time and costs
  • Reduction in false detections and increased throughput due to reliable object detection, even in harsh ambient conditions
  • Ecolab certifies the use of the GR18 Inox in the field of food processing and in other areas with chemical cleaning processes
  • Innovative stainless steel accessories provide fast and low-cost installation
  • Simple electrical integration due to complementary outputs on the sensor


Round, strong, rugged – M18 stainless steel sensor for wash-down applications

The cylindrical photoelectric sensors of the GR18 Inox product family are characterized by a corrosion-resistant V4A (316L) stainless-steel housing. Due to its M18 housing design in short and standard housing lengths, they can be used universally in many applications. The special sealing concept, based on the chemical-resistant O-ring seals, prevents liquids from entering the sensor. Various male connector and connection variants round out the product portfolio.

At a glance
  • High mechanical ruggedness due to stainless-steel housing 1.4404 /316L
  • Ecolab-certified - resistant to acidic and alkaline cleaning and disinfecting agents
  • IP67, IP68 and IP69K enclosure rating – for washdown applications
  • M18 thread
  • M12 male connector and 2 m cable variants


Technical overview

  • Technical data overview

    Technical data overview

    Dimensions (W x H x D)

    18 mm x 18 mm x 73.5 mm

    18 mm x 18 mm x 55.9 mm

    Sensing range max.

    3 mm ... 300 mm 1)

    3 mm ... 100 mm 1)

    3 mm ... 115 mm 1)

    5 mm ... 550 mm 1)

    5 mm ... 1,000 mm 1)

    0.03 m ... 7.2 m 2)

    0 m ... 15 m

    3 mm ... 200 mm 1)

    Light sourcePinPoint LED / LED
    Type of lightVisible red light / Infrared light
    Enclosure rating


    IP68 3)

    IP69K 4)

    Housing materialStainless steel Stainless steel V4A (1.4404, 316L)

    Potentiometer, 270°


    • 1) Object with 90 % reflectance (referred to standard white, DIN 5033).
    • 2) Reflector PL80A.
    • 3) According to EN 60529 (10 m water depth / 24 h).
    • 4) According to ISO 20653:2013-03.
All technical data can be found accompanying the individual product