Sensors & Transducers


Self-contained ­photoelectric sensors for harsh environments

March 2016 Sensors & Transducers

Banner Engineering has introduced the new M18-4 self-contained photo­electric sensors in a robust IP69K-rated 316 stainless steel package. These heavy-duty 18 mm metal barrel sensors are ideal for harsh industrial environments where abrasive chemicals and ingress fluid are present. Built with Advanced ASIC technology, the DC operated M18-4 sensors are also resistant to fluorescent light and offer a high level of crosstalk avoidance.

Featuring a powerful and brightly visible red emitter beam, the M18-4 allows for easy alignment and set-up. For added ease of use, it also offers a highly visible output, and dual-function power and stability indicators. The indicators are comprised of one green and two yellow LED lights. Solid green indicates power is applied and the sensor is ready, while green flashing specifies a marginal sensing signal. The two bright yellow LEDs, visible from both sides of the sensor, indicate the output is conducting.

“Some production environments damage low cost plastic sensors leading to machine down time,” said Dennis Smith, senior technical marketing manager, Banner Engineering. “Banner’s M18-4 photoelectric sensors are designed to provide long term and reliable sensing performance in harsh industrial applications with enhanced chemical and washdown resistance.”

To accommodate diverse applications, the M18-4 is available in opposed, polarised and non-polarised retroreflective, diffuse and fixed-field sensing modes. For increased flexibility, diffuse models offer a robust 250 degree sensitivity potentiometer. A wide operating temperature range of -40 to +70°C ensures optimal performance for diverse applications.

For more information contact Brandon Topham, RET Automation, +27 (0)11 453 2468, brandon.topham@retautomation.com, www.retautomation.com


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