Lenterra Sensor Systems

Lenterra Flow Sensor Systems

We are pleased to announce that we are now the worldwide exclusive distributors of Lenterra products.

Lenterra specialises in sensor instrumentation for in-line, real-time flow measurement. For more information on the two systems available, the Lenterra Flow Sensor (LFS) System and the Lenterra Shear Stress (LSH) Measurement System, please see below.


Lenterra Flow Sensor (LFS) System

Micro-optical technology for measuring forces in powders, granules and non-Newtonian materials

The Lenterra Flow Sensor (LFS) system consists of a Drag Force Flow (DFF) sensor, an Optical Interrogator (LOI) and a laptop. The system offers in-line, real-time flow measurement to a number of industries looking to improve process understanding and manufacturing efficiency.

Lenterra Flow Sensor System Powder Motion Drag Force

The Drag Force Flow sensor is mounted on a stationary base, and contains two optical strain gauges, made up of Fiber Brag Gratings (FBGs), which are connected to the Optical Interrogator via a fibre optic cable. When immersed in a powder or flowing material, the Drag Force Flow sensor bends under the force of the flow and quantifies the drag force. The amount of bending is measured real-time, in-line, allowing the user to determine in process properties of their materials.

The data is collected via optical fibres that connect the Fiber Brag Gratings with the Optical Interrogator. The interrogator continuously records the Fiber Brag Grating spectra. When the hollow pillar is deflected due to force acting on it, one of the Fiber Brag Gratings becomes stretched and the other one compressed, leading to a shift in wavelength of the spectra.

Features

  • In-line, real time measurement of material properties
  • Multi-directional sensitivity
  • Chemically resistant construction
  • Fibre optic connectivity

Benefits

  • Enhanced process understanding
  • Improved product quality and consistency
  • Optimise cycle times
  • Accelerate / simplify scale up
  • Minimise 'out of specification' material and rework
  • Improve compliance
  • Reduce costs (reworks, resample, retesting etc.)


Application Example

High Shear Wet Granulation

High shear wet granulation (HSWG) processes are widely used in the pharmaceutical industry.

Effectively managing the High Shear Wet Granulation (HSWG) process requires an understanding of granule evolution and their changing properties.

Drag Force Flow Sensor

Advantages of the Drag Force Flow (DFF) Sensor

Consolidated Granule Impacts Graph Drag Force Flow Sensor in-line PAT Graph
The principal output of the Drag Force Flow sensor for powder mixing applications, including granulation monitoring, is the Force Pulse Magnitude (FPM). Force Pulse Magnitude is the difference between the force at maximum and the preceding minimum. Each Force Pulse Magnitude, therefore, characterises a passing of one blade under the probe pin. Being a differential measurement, Force Pulse Magnitude provides a reliable characteristic of the wet mass consistency and densification, since it is independent from possible zero drift in the raw signal.


Other Applications:

For further information, please contact us.



Lenterra Shear Stress (LSH) Measurement System

RealShear Wall Shear Stress Sensor RealShear Wall Shear Stress Sensor

The Lenterra Shear Stress (LSH) measurement system consists of a RealShear™ Wall Shear Stress (WSS) sensor, an Optical Interrogator (LOI) and a laptop.

The RealShear Wall Shear Stress sensor mounts flush with a pipe or vessel wall enabling direct measurement of wall shear stress, flow rate, viscosity and multiphase flow characteristics.

The main benefit for users is that measurements can be taken without the need to disrupt the mixing process, which allows for 'on-the-fly' process adjustments as required.

Mounted flush with a pipe, vessel wall or rotor-stator workhead, the RealShear Wall Shear Stress sensor provides real-time measurement of wall stress. The sensor employs a floating element attached to a cantilever beam that deflects in response to shear force as material flows across its surface. The cantilever transmits the shear force to a Fiber Bragg Grating (FBG). The shift in wavelength is proportional to the shear stress. Fast, continuous measurement of material flow characteristics are provided via the Optical Interrogator.

Features

  • In-line, real time measurement of material properties
  • Multi-directional sensitivity
  • Chemically resistant construction
  • Fibre optic connectivity
  • Operation in wide range of temperatures

Benefits

  • Enhanced process understanding
  • Improved product quality and consistency
  • Optimise cycle times
  • Accelerate / simplify scale up
  • Minimise 'out of specification' material and rework
  • Improve compliance
  • Reduce costs (reworks, resample, retesting etc.)

High-Shear Mixers

Application Example

High-Shear Mixing

High-Shear Mixers (HSMs) are increasingly being used across numerous industries, including the production of pharmaceuticals, food, and cosmetics.

High-Shear Mixers are often of the rotor-stator type. RealShear sensors installed through the stator are able to monitor the wall shear stress of the High-Shear Mixers and serve as a Process Analytical Technology (PAT) tool in the manufacturing of emulsions and other liquid substances.

For further information, please contact us.



Lenterra Optical Interrogator (LOI)

Optical Sensor Interrogator Offers Fast, High Resolution Interrogation

High-Shear Mixers

Designed for use with Lenterra's in-line, real-time Drag Force Flow (DFF) and RealShear™ Wall Shear Stress (WSS) sensors, Lenterra's Optical Sensor Interrogator (LOI) is a compact, robust, fast measurement unit. The LOI delivers high accuracy, long term stability, streamlined installation, and premium performance.

Using light instead of electricity and glass fibre instead of copper wire, the sensors are nonconductive, electrically and chemically passive, and immune to electromagnetic interference.

Lenterra's fibre optic platform, based on Fiber Bragg Grating (FBG) technology has the ability to significantly enhance process performance, quality, productivity and safety in numerous industries.

The LOI is controlled by any standard PC through a USB interface and utilises a fast, low noise Distributed Feedback diode laser with narrow linewidth for full spectrum scanning. Custom software is used to control the interrogator and process and store collected shear stress data.

For further information, please contact us.

Lenterra Optical Sensor Interrogator