Product Details


Hazardous Duty Encoder Sensor

  • Fits Shafts up to 4 1/2" [115mm]
  • Ideal for Oil and Gas Drilling
  • Fully Potted Electronics
  • Up to 5000 PPR
  • Wide Sensor-Rotor Gap: No Shimming or Scraping
  • 3 Year No-Hassle Warranty
  • cULus Class I, Div 2 Listed, Groups A,B,C,D
  • cULus Class I, Div 1 Listed, Groups A,B,C,D
  • ATEX IECEx Rated: Zone 1 & 2, 21 & 22
  • cULus Class I Zone 0 Group II C

XR5 SMARTSafe™ modular sensors enable the world's first hazardous duty encoders with removable electronics.  They are cULus, ATEX and IECEx certified and offer incredibly reliable no-bearing construction!  SMARTSafe sensors can be used in ATEX/IECEx gas and dust and UL gas hazardous environments. Also available: hollow shaft models (XR685), shafted models (XR485), no-bearing modular encoders (XR125, XR850), and modular sensors for larger bore applications (XR12).

For applications requiring ATEX/IECEx Zone 2 or 22 or cULus Class I, Division 2, Groups A,B,C,D use the XR5 directly in your application, with no barrier, isolator or cable gland required.

For applications requiring UL Division 1, ATEX/IECEx Zone 1 or 21 protection use the XRB3 isolator in your control cabinet which permits the use of intrinsically safe wiring instead of explosion proof conduit or glands. The XR5 can also be used in UL Class I Div 1 & Zone 0 applications using the XRB3 Isolator.

Unlike the competition, Avtron SMARTSafe encoder systems are protected against short circuits, power-to-output wiring, and output-to-ground faults.

Instead of mounting a tiny optical encoder with weak bearings on a wobbling stub shaft, mount XR5 directly on your machine and install the rotor on your main application shaft. Vibration, shock, liquids, dust and dirt won't harm SMARTSafe XR5 encoders! Paint booths, draw works, coil tubing rigs...XR5 can keep them all working 24/7/365.

Eliminate the biggest cause of industrial encoder failure--eliminate the bearings with XR5 hazardous duty encoder sensors!

Operating Power: (add cable drive current as req'd)

   Division 1, Zone 1 (XRB3): 12-24VDC in/out, 150 mA

   Division 2, Zone 2: 5-24VDC in/out, 150 mA

Output Format: A Quad B with marker (A,/A, B,/B, Z,/Z)

Frequency Range: 0 to 165 kHz

PPR: 8-5000

Speed: 6000 RPM Max. (contact factory for higher speeds)

Maximum Cable Length

   Division 1, Zone 1: Encoder 500' Isolator 1000'

   Division 2, Zone 2 (5 to 12 VDC in): 500'

   Division 2, Zone 2 (15 to 24 VDC in): 250'

Rotor Positioning: Up to +/-0.100" [+/-2.54mm] movement/misalignment

Sensor-Rotor Gap: 0.045", +0.015/-0.040" [1.14mm+0.38/-1.0]

Temperature: -40°C to 80°C (Storage -40°C to 100°C)

Environmental: Electronics-IP54 (see manual for details)

Vibration: 5-2000Hz, 18G; 100G Shock

Weight: 2.2 lbs. [1kg]


   ATEX/IECEx Zone 1 & Zone 21 Group IIC

   cULus Class I, Division 1 and Zone 0 Group A,B,C,D*

   ATEX/IECEx Zone 2 & 22 Group IIC

   cULus Class I, Division 2 Group A,B,C,D

*See installation drawings for Warnings and Limitations

  • Sensor PPR can be factory reprogrammed
  • Full protection against short circuits, reverse voltage, phase-to-phase shorts
  • Shrugs off dirt, oil, and water contamination
  • No glass disks to break or optics to fail
  • 4,500,000+ hour MTBF design
  • Full protection against short circuits, reverse voltage, phase-to-phase shorts
  • Mount in XR485, XR685, and XR850 encoders
  • Direct Machine-Mount Option
  • Self-Diagnostic LED and Alarm Output

No Related Materials Available

Competitive Products

  • XR5 SMARTSafe™ encoder sensors can be used to replace many competitive models including:


    H20, H25, H38, H40 encoders

    HS35, H37, H38, H40, L25 explosion proof and intrinsically safe encoders

    924-08062-001, 924-08062-002, 924-08062-003, 924-08063-001, 924-08063-002, 924-08064-001, 924-08064-002, 924-08172-001, 924-08172-002, 924-08173-001, 924-08173-002, 924-08174-001, 924-08174-002, EM-DR1-IS-5-RTB-24V/V, EM-DR1-IS-5-RTB-24V/4, EM-DR1-IS-5-RTB-24V/OC intrinsic safety barriers & systems

    Baumer Hubner:

    EEx OG 9, FOG 9, POG 9, POG 9 G, POG 90, POG 10, POG 10 G, POG 11, POG 11 G

    EEx HOG 161, HOG8, HOG9, HOG10, HOG11, HOG131, HOG161, HOG163, HOG165 encoders

    BEI Ideacod encoders:


    Dynapar encoders:

    X25 encoder


    RSI 58X-,RVI 58X-, RVI84, 14-1436X, 14-14361, 14-14366

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