Avtron XR125 SMARTSafeā„¢ Encoders

Avtron XR125 SMARTSafeā„¢ Encoders

Our Largest Hazardous Duty Encoder

  • Fits NEMA 12.5" Flanges
  • Fits Shafts up to 7 7/8" [200mm]
  • ATEX/IECEx Rated for Zone 1, 2, 21 & 22 Applications
  • Ideal for Oil and Gas Drilling
  • No Bearings to Wear Out
  • Fully Potted Electronics
  • Up to 8192 PPR
  • Self-Diagnostic LED and Alarm Output
  • 3 Year No-Hassle Warranty
  • cULus Class I Division 1 Groups A, B, C, D, Listed
  • cULus Class I Zone 0 Group IIC
  • cULus Class I Division 2 Groups A, B, C, D, Listed
Outline Drawing
XR125 SMARTSafe 12.5" modular incremental quadrature rotary encoders are a breakthrough in hazardous duty encoders to fit large shaft applications.  They are ATEX/IECEx and cULus approved and offer incredibly reliable no-bearing construction!  SMARTSafe encoders can be used in ATEX/IECEx gas and dust and UL gas environments.  Also available:  hollow shaft models (XR45, XR685), shafted models (XR4F, XR485), no-bearing modular encoders to fit other flange sizes (XR56, XR85, XR115, XR850), and modular sensors (XR5, XR12).

For applications requiring ATEX/IECEx Zone 2 or 22 or UL Class I, Division 2, Groups A,B,C,D use the XR125 directly in your application, with no barrier, isolator or cable gland required.

For applications requiring UL Division 1, ATEX/IECEx Zone 1 or 21 use the XRB3 isolator in your control cabinet which permits the use of intrinsically safe wiring instead of explosion proof conduit or glands. The XR125 can also be used in UL Class I Division 1 and 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 XR125 directly on your main application shaft.  Vibration, shock, liquids, dust and dirt won't harm SMARTSafe XR125 encoders!  Paint booths, draw works, coil tubing rigs...XR125 can keep them all working 24/7/365.

Eliminate the biggest cause of industrial encoder failure--eliminate the bearings with XR125 hazardous duty encoders.
Operating Power: (add cable drive current as req'd)
     Division 1, Zone 1 (XRB3):  12-24VDC In, 10.6V Out, 150mA
     Division 2, Zone 2:  5-24VDC In/Out, 100mA 
Output Format: A Quad B with marker (A,/A, B,/B, Z,/Z)
Frequency Range: 0 to 165 KHz
PPR: 8-8192
Speed: 5000 RPM Max. (contact factory for higher speeds)
Maximum Cable Length
     Division 1, Zone 1 (Local/Remote):  1000' [300m] / 400' [120m]
     Division 2, Zone 2:  500' [150m] @ 5-12V; 200' [60m] @ 24V
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-IP67 (see manual for details)
Vibration: 5-2000Hz, 20G; 100G Shock
Weight: 15-18 lbs. [7-8kg]
     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

  • Easy-swap electronic modules
  • Sensors can be directly machine-mounted for OEM flexibility
  • No air gap adjustment required
  • Shrugs off dirt, oil, and water contamination
  • No glass disks to break or optics to fail
  • 4,500,000+ hour MTBF design
  • Wide Sensor-Rotor Gap: No Shimming or Scraping
Industry General Food & Beverage Pulp & Paper Wood Products Wind Power Crane & Hoist Metals Mining Marine Oil & Gas

Light Mill Duty

AV20, AV25, AV6A, AV6M, Avtron Elevator Encoder, Cables and Connectors, Encoder Couplings, Encoder Programming Tool, HS25A, HS35A, HS6A, K661, SC65

Mill Duty

AV32, Cables and Connectors, Encoder Couplings, HS35M, HS35X, HS6M, K661, M185, M3, M3(small), RAHS35M

Heavy Mill Duty

AV115, AV125, AV44, AV45, AV56, AV56-Wind, AV56S, AV67, AV85, AV850, AVSK, Cables and Connectors, Carlen Replacement, HS44, HS45, K661, M4, M4(small), XP5, XR115, XR12, XR125, XR45, XR4F, XR5, XR56, XR67, XR85, XR850, XR97, XRB1, XRB2, XRB3

Severe Mill Duty

AV12, AV30, AV485, AV5, AV685, Cables and Connectors, Carlen Replacement, Encoder Couplings, HS40, K661, M484, M6, M6C, M7, XP5, XPH1, XPH8, XR12, XR485, XR5, XR685, XR97, XRB1, XRB2, XRB3,
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