DFF

DFF

Drag Flow force (DFF) Sensors

Lenterra’s DFF sensor is an immersion probe that provides continuous real-time measurement of flow force and temperature in liquids and powders. This novel Process Analytical Technology (PAT) tool is the basic part of Lenterra Inline Rheometer (LIR) that enables process monitoring and control in pharmaceutical, food, biotech and other industries.

Key Features

DFF sensors are available in two modifications: S-series and P-series. In the S-series sensors, the sensitive probe (pin) are integrated with the probe holder enabling the sensor to be submerged deep into the flow material. P-series sensors are better suited for wall placement. Either type usually requires an adapter for installation into the processing equipment.

DFF S-series sensor

Model Number Measurement range1, mN Resolution,2,3 mN Pin diameter, mm Pin length, mm
S-15000-30
±15,000
2.3
3.2
30
S-4000-40
±4,000
0.6
2.8
40
S-300-40
±300
0.045
1.27
40
  1.  Custom measurement ranges available
  2.  When used with an LOI interrogator
  3. Corresponds to one standard deviation of zero force noise

DFF P-Series Sensor

Model Number Measurement range1, mN Resolution,2,3 mN Pin diameter, mm Pin length, mm
P-15000-30
±15,000
2.3
3.2
30
P-4000-40
±4,000
0.6
2.8
40
P-300-40
±300
0.045
1.27
40
  1.  Custom measurement ranges available
  2.  When used with an LOI interrogator
  3. Corresponds to one standard deviation of zero force noise
dff

Product Specifications

Cylindrical hollow stainless steel (316L) tube sealed with a stainless steel (316L) cap, Fiber Bragg gratings are adhered to the inner surface of the pin.

A hollow cylinder (SS 316L) holding the sensor pin on one end and continuing with instrument cable on the other end. It contains optical fibers originated inside the pin.

Material: Polyolefin Plastic

Material: SS squarelock tube covered with PVC tube Outside diameter: 0.24” (6.1mm)
Length: 6.5 ft (2m)
Operating temperature: -10oC to 60oC (14oF to 140oF)

Connects the sensor with LOI interrogator Type: Duplex LC/PC fiber connector

Ingress Protection: IP67 - Dust Tight, Waterproof Operating temperature: -40oC to 85oC (-40oF to 180oF)

Specifications are subject to change without notice