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Rotary Encoders operate in hazardous areas.

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Rotary Encoders operate in hazardous areas.
Rotary Encoders operate in hazardous areas.

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December 23, 2013 - Housed in flameproof enclosure, 78E Series has ATEX and IEC Ex international approval in addition to third-party approval by TÜV. Units deliver maximum speeds to 3,000 rpm and come in wide range of interfaces, including SSI, CANopen, DeviceNet, or Profibus. Operating from -40 to +70°C, encoders feature modular design with removable cover that allows configuration and connection to PLC. Housing measures 78 m in diameter and is available in anodized aluminum or stainless steel.
Original Press Release

1600 Enterprise Parkway
Twinsburg, OH, 44087

New Hazardous Area Encoder from Pepperl+Fuchs Offers Unmatched Versatility in Challenging Application Environments

TWINSBURG, OH – The new 78E Series Ex Encoder from Pepperl+Fuchs is especially designed for applications in hazardous areas. The 78E Series with its “flameproof enclosure” has ATEX and IEC Ex international approval in addition to third-party approval by TÜV. It is designed for the oil/gas, refineries, mining and material handling (agriculture, chemicals) industries. The new 78E Series is available in wide range of interfaces, including SSI, CANopen, DeviceNet, or PROFIBUS. Along with these different protocols, this encoder series has a removable cover that allows easy configuration and connection to a PLC.

“A special feature of the 78E rotary encoder is the modular design with removable connection cover,” explains Robert Pasho, Lead Team – Application Engineering, Pepperl+Fuchs. “The connection covers are supplied either with a cable or with only a certified cable gland, providing the option of customized cabling.”

In addition to simple installation, the modularity facilitates simple maintenance because the rotary encoder can be replaced independently of the cable. For fieldbus versions, bus coding takes place in the connection cover. This means that the user can program the relevant address on site and set the terminator if required.

These hazardous area rotary encoders feature a compact 78 mm diameter housing available in anodized aluminum or stainless steel. For the mechanical connection, users can select between a clamp and synchro flange. They deliver maximum speeds to 3000 rpm and are designed for a temperature range of -40 °C ... +70 °C. 

The 78E Series is of a “flameproof enclosure” ignition protection class (Ex d) and meets the international ATEX and IECEx requirements for gases according to Zones 1 and 2 and dust according to Zones 21 and 22. As a result, these rotary encoders are suitable for global use in oil/gas, refinery, mining and material handling applications, among others.

Pepperl+Fuchs is a world leader in the design, manufacture and application of high quality factory and process automation products and services. Pepperl+Fuchs pioneered the development of proximity sensors 50 years ago, and has set the standard for innovation and quality ever since. 

Pepperl+Fuchs, 1600 Enterprise Parkway, Twinsburg, OH 44087; (330) 486-0001; fax: (330) 405-4710;;

For Lead processing: Email or send all leads to:; Pepperl+Fuchs, 1600 Enterprise Parkway, Twinsburg, OH 44087, Attn: Tonya Maley. Please identify leads with item code PFA713 for fastest lead processing.

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