This version of Internet Explorer is either no longer supported by Microsoft, or is obsolete and some features of our store may no longer be supported.
Please consider upgrading or use a different browser.
Fork sensors (also called slot sensors) use through-beam photoelectric technology to detect objects passing through the slot. The rugged one-piece housing keeps the emitter and receiver in alignment and a convenient, single-cable connection is provided. A variety of light sources are available for specialty sensing applications, with sensing distances up to 220mm.
Fork sensors (slot sensors) are U and L-shaped through-beam object detecting sensors that have the transmitter and receiver built into
the opposing "fork" arms of the sensor housing.
Fork sensors offer advantages over standard through-beam sensors in certain applications.
Identical mechanical and optical axis
Operational reliability and repeatability
Transmitter / receiver built into the same housing
Models available for transparent and liquid detection
Ease of installation - one connection point
Rugged metal one-piece housing - always in alignment
U-Frame standard or harsh-duty, and L-frame configurations
Red, Infrared and Laser light emission models
10 to 30 VDC operating voltage
Light / Dark operation (selectable)
PNP and NPN logic versions
Short-circuit and reverse polarity protection
360° LED indication / switch status
IEC IP67 rated
Agency approvals: UL E328811- CE
For part listings and specifications, go to Shop Now
Visible Red Light and Infrared Light models are available in certain fixed sensing ranges from 5 to 220 mm
Laser Light models are available in certain fixed sensing ranges from 30mm to 120mm
Transparent Object and Liquid Detection models offer sensing range of 80mm (PSTI series)
U-Frame harsh duty sensors (stainless steel) offer sensing distances of 50mm or 80mm
Visible Red Light and Infrared Light models are available in certain fixed sensing ranges from 60 to 160mm
More open configuration for applications requiring object position flexibility
* The Laser Classification Systems for the standards IEC (EN) 60825-1 defines the following safety classes:
Class 1 - This class is eye-safe under all operating conditions. (AutomationDirect fork sensors)
Class 2 - These are visible lasers. This class is safe for accidental viewing under all operating
conditions. However, it may not be safe for a person who deliberately stares into the laser beam for longer than 0.25 seconds, by overcoming
their natural aversion response to the very bright light.