MR660 Multi-Axis Fiber Optic Accelerometer




Multi-Axis Fiber Optic Accelerometer System

The MR660 Series Multi-Axis Fiber Optic Acceleration Sensor System provides an innovative solution for measuring vibration and movement in high voltage or hazardous environments. Typical applications include Pantograph monitoring, Wind Turbine Blades, MRI, Transformers, Generators, Mining, and Oil & Gas.

Sensors and Controllers are available in 1-, 2-, and 3-Axis configurations. The MR660 Acceleration Sensor employs a highly sensitive MEMS membrane to provide a robust system capable of producing an output signal of 100mV/g pk-pk with a bandwidth of 0.5Hz to 1000Hz.

Micronor delivers custom tailored sensors to suit a specific application. Contact Micronor for configurations other than the standard sensors available.


Sensor Specifications

Measurement Parameters  
No. of Axes 1, 2, or 3 Axis
Frequency Response (±5%) 3dB bandwidth=1100 Hz
Maximum Measuring Range 50 g
Noise Density <100 μg/Hz
Mechanical Performance  
Maximum Shock Survival 1500 g
Optical Interface  
Pigtail Configuration 100/140 micron Step-Index Polyimide buffered fiber terminated with:
1-Axis or 2-Axis Sensors: Fischer MC4 Multichannel Connector
3-Axis Sensor: 3x Duplex E-2000 Connectors
Insertion Loss (IL) 7.0dB typical
Maximum Distance Distance depends on the user’s system loss budget which is the totral round-trip loss of all optical link components. Consult AN118 for more information.
Explosive Atmospheres Inherently Safe, Simple Mechanical Device
EX Classification Inherently safe simple mechanical device when used with MR660 series Controller.
Temperature -40°C to +85°C (-40°F to +185°F)
Humidity  0-95% RH, Non-Condensing
Ingress Protection IP68
Physical Attributes  
Unit Weight (Aluminum, Round Sensor) 230 g (0.51 lbs)
Materials Aluminum or Ceramic

Specifications subject to change without notice


Controller Specifications

Position Measurement  
Nominal Sensitivity 100 mV/g pk-pk
Electrical Interface  
Power Supply 12 VDC
Optical Interface  
System Loss Budget 8dB
Maximum Optical Link Length  Up to 200 meters
Explosive Atmospheres Inherently Safe, Optical Radiation
EX Classification Controller shall be installed in non-hazardous location only
Temperature -40°C to +85°C (-40°F to +185°F)
Humidity  0-95% RH, Non-Condensing
Ingress Protection IP50
Physical Attributes  
Unit Weight 460 g (1.01 lbs)
Materials Aluminum Housing

Specifications subject to change without notice


Ordering Information

MR662, 1-Axis Accelerometer System  
9800.72.001 1-Axis Acceleration Sensor, Length=6m
9800.73.001 1-Axis DIN Rail Controller
9800.89.23X FO Extension Cables, Various Lengths, Consult Data Sheet for Options
MR663, 2-Axis Accelerometer System  
9800.72.002 2-Axis Acceleration Sensor, Length=6m
9800.73.002 2-Axis DIN Rail Controller
9800.89.24X FO Extension Cables, Various Lengths, Consult Data Sheet for Options
MR664, 3-Axis Accelerometer System  
9800.72.003 3-Axis Acceleration Sensor, Length=6m
9800.73.003 3-Axis DIN Rail Controller


  • 100% all dielectric, passive sensor – no electronics whatsoever
  • Immune to EMI, RFI, high voltage, and magnetic fields
  • Low Noise Density
  • Inherently safe sensor can be installed in all manner of explosive atmospheres – gas, dust or mines
  • DIN Rail Mount or OEM controller available


  • Wind turbine blades
  • Electric train pantograph
  • High voltage transformers and generators
  • Large motors
  • MRI


Call +1-805-389-6600 or email