Wall Shear Stress Sensor - RealShear Lenterra

RealShear™ - Lenterra Wall Shear Stress Sensor

Direct, Real-Time Measurement

Dafratec presents the first instrument that directly measures wall shear forces without interrupting process flow. Known as RealShear™ Lenterra, it lets operators track changes in fluid viscosity during mixing and calculate flow rate.

RealShear™ Lenterra Features

The RealShear™ wall shear stress sensor from Lenterra is mounted flush with a tube or vessel wall, enabling direct measurement of wall shear stress, flow rate, and liquid viscosity during flow or mixing.

Key Benefits

• No-flow-interruption measurements: Taken without stopping the mixing process, allowing on-the-fly adjustments.

How the RealShear™ Lenterra Sensor Works

RealShear™ Lenterra mounts flush to a tube, vessel wall, or rotor-stator head. It provides inline, real-time measurement of liquid process flow—without any process interruption.

Sensor Operation

The sensor relies on a floating element installed flush with the vessel wall and connected to a cantilever beam. The beam deflects in response to shear stress as fluid flows across its surface.

The cantilever transfers shear force to a fiber-optic microresonator whose resonance is centered at a given wavelength. Shear stress on the optical resonator shifts the resonant wavelength, with displacement proportional to shear stress.

Optical Advantages

Because RealShear™ Lenterra sensors are optical, they’re immune to electromagnetic interference and are explosion-safe. Fast, continuous measurements of flow, viscosity, and multiphase flow characteristics are delivered via an LOI Optical Interrogator or LOC-F Optical Controller.

RealShear™ Lenterra Features

• Inline, real-time measurement
• Bidirectional sensitivity
• Chemically resistant construction
• Fiber-optic connectivity
• Two footprint sizes
• High measurement rate
• Wide operating temperature range
• Complete sensor measurement system

Benefits of Using RealShear™ Lenterra

• Reduced/eliminated deviations
• Better customer service
• Shorter cycle times
• Lower inventory levels
• Cost reduction
• Improved capacity utilization
• Improved compliance
• Improved quality assurance

By adopting RealShear™ Lenterra, companies can optimize mixing processes, reduce costs, and enhance final product quality.