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MR338
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FIBER OPTIC ABSOLUTE ENCODER MR338 ZapFREE MRI Safe Fiber Optic Absolute Position Sensor ® MR330 SERIES The MR338 Series ZapFREE® Fiber Optic Absolute Position Sensor is an entirely passive, non-metallic absolute rotary encoder designed for use in Magnetic Resonance Imaging (MRI), nanomagenetic detection, EMC test labs, and similar applications where immunity and transparency to electromagnetic fields is required. The MR330 system measures absolute angular position from 0° to 360° with 0.025° (14-bit) resolution and can track turns up to 4096 counts (12 bits). The remote MR330 Controller Module features multiple built-in interface for compatibility with industry standard motor drives, PLCs, and motion control systems. MR Ex U.S. Patent 8,461,514 B1 Inherently Safe, Simple Mechanical Device EPL Mb/Gb/Gc/Db/Dc 24 VDC, SSI, RS485, Modbus, USB, Analog, Digital MRI Safe with LC Duplex Pigtail Duplex LC, Multimode 62.5/125 Fiber Optic Cabling Features • Absolute 0.025° (14-bit) resolution • 100% all-optical, passive sensing design • Non-metallic for safe use in MRI Zone • Immune and transparent to electromagnetic fields - does not leave artifacts in MRI scans • Immune to lightning and high voltages • EX Classified “Inherently Safe, Simple Mechanical Device”. • Outdistances copper, link lengths to 300 meters Micronor MRI Safe position sensors are enabling MRI performance improvements and development of new

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Specifications Measurement Parameters Measurement Range Maximum 2,500 rpm for position reading; Mechanical limit is 6,500 rpm Mechanical Performance Moment of Inertia Starting Torque 3.58E-04 N*m with Shaft Seal Axial 30 N (6.75 lbf), Radial 60 N (13.5 lbf) L10 bearing life at 100% of max radial/axial load at 2500 rpm: 5.68E+05 hours System MTBF (ISO Method) L10 bearing life at 10% of max radial/axial load at 2500 rpm: 1.22E+06 hours Optical Interface Optical Interface LC Duplex, 62.5/125μm, Graded Index Fiber, 0.275NA, Type OM1 Link Length Up to 300 meters with MR330 Controller ACR...

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