Turnkey LOC-F Controller allows real-time measurement of shear stress or viscosity measurements.

Adjust measurement rates for your application – without interrupting process flow.

An integral part of Lenterra’s innovative in-line PAT technology, the LOC-F Controller uses fiber optic technology to communicate with the micro-optical resonators inside our RealShear sensor products.


Equipped with an optical source, the controller receives data from the micro-optical resonators built in to the housing of Lenterra’s F-Series And M-Series Real ShearTM Sensors.

The unit interfaces with a PC through USB for measurement display and analysis (software supplied at no additional cost).

Download PDF Specification Sheet


  • LabVIEW®-based remote software to display real-time data and capture and save for analysis (Microsoft Windows® compatible)
  • Fast measurement rate to capture high frequency periodic effects and transients (up to 10 kHz)
  • USB interface with remote PC
  • Simple turn-key operation
  • Available in 1 or 2 channel versions (LOC-F-1CH and LOC-F-2CH)
  • Source code supplied for user-customization of software


  • View real-time shear stress or viscosity measurements
  • Manually capture and save data or program automatic acquisition of data
  • Set measurement rate appropriate for your application
  • Calibration data for individual controllers and sensors
  • View and analyze previously-stored data