Fibre optic sensor gets IP67 rating

Banner Engineering has announced a new inline fibre optic sensor dubbed the FI22 designed to be used without an enclosure or a DIN-rail mounting.

Featuring a snap-mount bracket and adhesive mounting, it’s rugged, lightweight, low-profile plastic housing and IP67 environmental rating make it suitable for surface-mounting directly on a machine.

When used with Banner ‘Steelskin’ stainless steel-sheathed fibres, this ‘system’ provides an alternative to bulkier glass fibre optic systems.

Accurate setup is easy with the visible light beam and the real-time feedback of an 8-segment LED bargraph display. The FI22 features push-button single or two-point static, and two-point dynamic ‘Teach’ programming, plus a manual adjustment mode for fine-tuning. Single-point static ‘Teach’ defines a sensing window centred on a single taught condition and is accomplished in a static mode.

Dynamic ‘Teach’ is used to program the sensor ‘on-the-fly’ during actual machine-run conditions by taking multiple samples of the light-and-dark conditions and automatically setting the threshold at the required level. Setup instructions are printed on the snap-mount bracket for reference.

Bargraph LEDs provide the user with continuous feedback during setup and operation, including relative received signal strength, sensing contrast, programming status, and diagnostic warnings.

One or more sensors can be programmed from an external switch or PLC, via a remote ‘Teach’ wire. For added security, the wire can also be used to disable the push buttons. Disabling the push buttons prevents undesired tampering by unauthorised personnel.

The unit operates from 10 to 30V DC, and includes reverse polarity protection, two 100 mA solid state outputs (Bipolar: one NPN and one PNP), and transient voltage protection. It features a rugged housing, rated IEC IP67 and NEMA 6.

Users can choose from a 2 m (6.5′) 5-conductor PVC cable, a 9 m (30′) PVC cable, or 6-pin integral Pico-style quick disconnect. Prices begin at $79.00.