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XPH8 (SMARTSafe™) Magnetic Encoder

XPH8 SMARTSafe™ encoders are the world's first explosion-proof encoders with removable electronics and no external barrier!  They are cULus, ATEX, AEx & IECEx certified and offer incredibly reliable no-bearing construction!  SMARTSafe XPH8 encoders can be used in ATEX/IECEx, cUL AEX, and UL gas hazardous environments.  Also available:  no-bearing modular sensors (XP5), as well as intrinsically safe models (XR5XR12XR56XR125XR485XR685XR850) and hollow shaft models M6C.

For applications requiring ATEX/IECEx Zone 1 or 2 or cULus Class I, Division 1 or 2, Groups C & D use the XPH8 directly in your application with no barrier or isolator required.

Unlike the competition, Avtron SMARTSafe encoder systems are protected against short circuits, power-to-output wiring, and output-to-ground faults.  They feature full diagnostics:  it's easy to determine that signal quality is good-just look for the green LED.  Worried about wiring short circuits and errors?  XPH8 will indicate any short circuit conditions with an orange LED and will survive this condition!

No encoder bearing failures, no more sealing problems. Mount XPH8 directly on your motor.  Top drives, draw works, coil tubing, paint lines...so many applications benefit from a more reliable no-bearing encoder.  Vibration, shock, liquids, dust and dirt won't harm SMARTSafe XPH8 encoders!  

Eliminate the biggest cause of hazardous duty encoder failure--eliminate the bearings with XPH8 hazardous duty encoders.

XPH8 (SMARTSafe™) Magnetic Encoder

Technical specifications

  • Operating Power

    5-24VDC in/out

  • Current

    400mA max @ 5V, 200mA max @ 12V, 100mA max @ 24V (plus cable load)

  • Output Format

    A Quad B with marker (A,A–, B,B – , Z,Z – )

  • Frequency Range

    0 to 250 KHz

  • Speed

    6000 RPM Max.

  • Environmental


  • Maximum Cable Length: 1000 ft (305m) (contact factory for longer distances)
  • Rotor Positioning: Up to +/-0.100" [+/-2.54mm] movement/misalignment
  • Sensor-Rotor Gap: 0.040", +0.015/-0.030" [1mm+0.38/-0.76]
  • Certifications: Class I Div 1, Groups C and D, Class I Zone 1, Ex db ia IIB T4 Gb, Class I Zone 1, AEx db ia IIB T4 Gb & Ex db ia IIB T4 Gb (ATEX/IECEx)

Latest Application Notes