Details: Category: Encoders for explosive areas

Hazardous Duty No-Bearing Modular Encoder

Fits NEMA 8.5" Flanges
Fits Shafts up to 4 1/2" [115mm]
ATEX/IECEx Rated for Zone 1, 2, 21 & 22 Applications
Ideal for Oil and Gas Drilling
No Bearings to Wear Out
Up to 5000 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

XR850 SMARTSafe 8.5" modular incremental quadrature rotary encoders are a breakthrough in hazardous duty encoders. They are ATEX/IECEx, cULus approved and offer reliable no-bearing construction! SMARTSafe encoders can be used in UL gas and ATEX/IECEx gas and dust hazardous environments. Also available: hollow shaft models (XR45, XR685), shafted models (XR4F, XR485), no-bearing modular encoders to fit other flange sizes (XR56, XR85, XR115, XR125, 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 XR850 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 XR850 can also be used in UL Class I, DIV 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 XR850 directly on your main application shaft. Vibration, shock, liquids, dust and dirt won't harm SMARTSafe XR850 encoders! Paint booths, draw works, coil tubing rigs...XR850 can keep them all working 24/7/365.

Eliminate the biggest cause of industrial encoder failure eliminate the bearings with XR850 hazardous duty encoders.

Specifications

Operating Power: (add load and cable drive current as req'd)
Division 1, Zone 1 (XRB3): 12-24VDC lnfOut, 150 mA
Division 2, Zone 2: 5-24VDC In/Out, 150mA
Output Format: A Quad B with marker (A,/A, B,/B, Z,/Z)
Frequency Range: 0 to 165 KHz
PPR: 8-6000
Speed: 5000 RPM
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 Position: +/- 0.100” [+/- 2.54mm].
Sensor Rotor Gap: 0.04", +0.015"/-0.030" [1.02mm +0.38/-0.76mm]
Temperature: -40°C to 80°C (storage -40°C to 100°C)
Environmental: IP54 (see manual for details)
Vibration: 5-2000Hz, 20G, 100G Shock
Weight: 9lbs [4kg]
Certifications:
ATEX/IECEx Zone 1 & 21 Group IIC
cULus Class I Div 1 and Zone 0 Group A,B,C,D*
ATEX/IECEx Zone 2 & 22 Group IIC
cULus Class I Div. 2 Groups A,B,C,D
*See installation drawings for Warnings and Limitations.