MR382-2 Sensor

MR324 Hollow Shaft Encoder
March 30, 2015

MR382-2 Sensor


ZapFREE®  Fiber Optic U-BEAM Sensor

The MR382 series Fiber Optic U-Beam Sensor is an innovative photo interruption/slot sensor solution that can be deployed in challenging environments, including mines, oil & gas, refining, medical, electromagetic and high voltage. The U-Beam sensor is a turn-key optical solution for implementing a gear tooth speed sensor, an edge detector or proximity sensor. The optical sensor system operates over a duplex multimode 62.5/125μm optical link up to 1250 meters.

The MR382 Controller provides both +5V and +24V line driver outputs as well as a frequency to voltage analog output. For Functional Safety applications, the digital ouptuts implement a known default failure state.



Optical Interface
Slot Interface Consult MR382 Instruction Manual for beam profile and alignment information
Optical Interface LC Duplex Plug, Duplex 62.5/125μm Graded Index Fiber, 0.275NA, Type OM-1
Insertion Loss < 7.5 dB
Explosive Atmospheres Inherently Safe, Simple Mechanical Device
EX Classification Inherently safe, simple mechanical device when used with MR382-1Controller
IECEx Test Report GB/CML/ExTR 16.0105.00/00
IEC Ex EPL Mb/Gb/Gc/Db/Dc
NEC Exempt
Environmental Performance
Temperature/Humidity -40°C to +65°C (-40°F to +150°F), 0-95% RH, Non-Condensing
Ingress Protection IP65
Physical Attributes
Mounting Consult Mechanical Reference Drawing
Housing Consult Mechanical Reference Drawing
Weight Sensor with 5 meter pigtail, 115 g (4.05 oz)

Specifications subject to change without notice


  • Passive sensor is EX classified “inherently safe, simple mechanical device”
  • Sensor can be operated in challenging environments – medical, industrial, mining, oil & gas, electromagnetic, high voltage, etc.
  • Immune to EMI, RFI, lightning, high voltage and ground loops
  • Controller provides digital and frequency-to-voltage outputs
  • Operates over long distances – up to 1250 meters


Call 805.389.6600

Ordering Information