Presence Detection Crosses Industry Borders
技术分类:机器与离散传感器 作者:Dick Johnson 发表时间:2005-12-05
tra-miniature photoelectrics

Q12 Series of ultra-miniature photoelectric sensors is the smallest model in the World-beam family, roughly the same thickness as a U.S. quarter and only 8-mm wide. Self-contained devices have an over-molded design to achieve an IP67 environmental protection rating for harsh industrial environments. Available in opposed, retro-reflective, polarized retro-reflective, and fixed-field modes, devices have sensing ranges up to 2 m. Robust, metal-sleeved side-mounting hol

es simplify installation in confined locations. Applications include materials handling, packaging, semiconductor, pharmaceutical. www.bannerengineering.com Banner Engineering

Sensors for metal detection

Uprox + sensors precisely detect such materials as iron steel, stainless steel, copper, aluminum, and brass at increased distances with no reduction in rated sensing. Multicoil system replaces the wound coil in conventional ferrite core inductive sensors to achieve sensing distances up to 250% greater. Housing designs vary. Integrated predamping protection reduces the metal-free mounting area and allows traditionally flush-mounted sensors to be recessed by half a turn for increased mechanical protection. All adhere to present EN50082-2 standards. www.turck.com Turck

Extended-range sensors

E2A line of modular extended range proximity sensors offers 1.5 to 2.0 times the sensing distance of standard sensing range proximity sensors. Extended range lets users mount devices farther from tooling and work pieces, eliminating collisions and sensor damage. Line includes more than 220 models. Sensors come in M8, M12, M18, and M30 sizes in shielded or unshielded construction, NPN or PNP output, a range of barrel sizes and materials, and a choice of wiring options. Sensing distances range from 2-30 mm. Thick housing minimizes damage from over-torquing; fully vacuum-potted construction eliminates air pockets that can cause thermal, moisture, or vibration failure. Built-in wrench flats and

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