NIR&Wood – Sounds Good! #2

San Michele all’Adige, May 30, 2016

Probe technology for in-situ NIR applications

5/30/2016 Innovation with Integrity

Sampling technology: definitions/1

Sample

DTC Source

Mirror

Transflectance

Sample

DTC Source

Diffuse reflectance

Sample

DTC

Source

Trasmission

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Sampling technology: definitions/1

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DTC Source

ATR

Sample

Sample

DTC Laser

Raman Scattering

FO Cables, connectors

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• FO cables use standard male SMA 905 connectors

• Adaptors for connecting 2 fibres

Overview

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• Fiberoptic technology

• Reflectance Probes

• Sensor Heads

• Transmission Probes

• Flow Cells

• Transflectance Probes

Overview

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• Fiberoptic technology

• Reflectance Probes

• Sensor Heads

• Transmission Probes

• Flow Cells

• Transflectance Probes

Light Fiber Optics (“FO Cables”)

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• NIR low OH content quartz fiber

• Core diameter Ø 600 µm or 1000 µm

• Cladding and coating defines the optical and mechanical properties

• 7+7 fibers for reflection probes

• 6+1 fibers for reflection or transflection

• 1+1 fibers for transmission

Pure fused silica core (low OH)

Fluorine doped

fused silica cladding

Acrylate coating

Metal sheathed

Tefzel jacket

Monofiber Vs. Fiber bundle

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Sampling technology: spectral range

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MIR NIR Raman

Transmission + +++ n/a

Transflectance - ++ n/a

Diffuse reflectance + +++ +++

ATR +++ - n/a

• Attenuation profile

Achievable Distances

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• length 1m

170m

290m

Cutoff frequencies

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Distance (m)

cu

toff

(cm

-1)

Fiber Optic Process Probes Reflection Probes for Solids

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• Functional Principle of Reflection Probes: Diffuse Reflectance

• Types of Solid Immersion Probes:

• IN264 – TURBIDO: Monofiber Reflection Probe

• IN268 – REFLECTOR (7+7): Multifiber Reflection Probe

• IN269 – ALBEDO (7+7): Multifiber Reflection Probe with Separate Flange

• IN270 – Hellma 668.008 (7+7): Multifiber Reflection Probe

Illumination

Specular reflection

Principle of diffuse reflectance

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Kubelka P., and Munk,F., Z.tech.Phys.12,593 (1931)

Functional Principle of Reflection Probes

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Sample

Detector

Source

Reflection Probes: Principle of Diffuse Reflectance

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Reflection Probes: Setup for In-Line-Measurements

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NIR Spectrum

Analysis

Result

Source

Fiber-Optic Cable

Probe

Sample

Detector

15g/kg

Fiber-Optic Cable

Reflection Probe IN263

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• Immersion depth: 325 mm

• Temperature range: -40ºC to 200ºC

• Diameter of probe: 10mm

• Connection: Fiber Bundle, BQC Adapter

Reflection Probe IN263: Installation in a Mixer

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Reflection Probe IN264 Turbido: Monofiber Reflection Probe

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Reflection Probe IN264 Turbido: Monofiber Reflection Probe

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• Materials: Stainless Steel 1.4435 (316L) or on request: Hastelloy, stainless steel 1.4571 (316Ti), Titanium, PTFE

• Sapphire window, sealing by epoxy glue

• Optical fiber: 600 µm, 3 m, 2 x SMA connector

• Illuminated spot: Ø 1 mm

• Probe diameter: 12 mm

• Immersion depth 300 mm

• Temperature: max. 130 °C (continuous use)

Reflection Probe IN268 Reflector: Multifiber Reflection Probe

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Reflection Probe IN268 Reflector: Multifiber Reflection Probe

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• Materials: Stainless Steel 1.4435 (316L) or on request: Hastelloy, stainless steel 1.4571 (316Ti), Titanium, PTFE

• Sapphire window, sealing by epoxy glue

• Optical fiber: 7+7 600 µm, 2 m

• Illuminated spot: Ø 3 mm

• Probe diameter: 12 mm

• Immersion depth 300 mm

• Temperature: max. 130°C (continuous use)

• Pressure range: 0-16 bar, vacuum-resistant

Reflection Probe IN268 Reflector: Variation Reflector FLUSH

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Reflector Flush

Reflector Flush Plane

Cleaning Nozzle

Reflection Probe IN269 Albedo: Multifiber Reflection Probe with Flange

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Reflection Probe IN269 Albedo: Multifiber Reflection Probe with Flange

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• Materials: Stainless Steel 1.4435 (316L) or on request: Hastelloy, stainless steel 1.4571 (316Ti), Titanium, PTFE

• Sapphire window, O-Ring sealing (Kalrez®)

• Optical fiber: 7+7 600 µm, 2 m,

• Illuminated spot: Ø 5 mm

• Probe diameter: 50 mm

• Immersion depth 100 mm

• Temperature: max. 130oC (continuous use)

• Pressure range: 0-16 bar

Reflection Probe IN270: Hellma 668.008 Multifiber Reflection Probe

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Reflection Probe IN270: Hellma 668.008 Multifiber Reflection Probe

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• Materials: Stainless Steel 1.4435 (316L), other materials on request

• Sapphire window, EPDM, Kalrez® or brazed sealing

• Optical fiber: 7+7 600 µm

• Illuminated spot: Ø 2-4 mm @2.5 mm distance

• 30°illumination reflection

• Probe diameter: 30 mm

• Immersion depth 250 mm

• Temperature: 5 to 140 °C (continuous use)

• Maximum pressure: 10 bar

• Hygienic design, FDA conforming seals

Non contact system

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100÷400 mm

Non contact system

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Non contact system

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• SS 1.4301, quartz window

• 2 NIR sources 5 W (or 4x20W)

• Working distance: 10 ÷40 cm

• Sample spot: 10 mm approx.

• Internal BKG

• Max distance to spectrometer:

100m

Non contact system

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• Air blade

• Vortex cooler (T > 40°C)

Installation on Cement Kilns Moisture and Calorific power

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Fiber Optic Process Probes Liquid Probes & Flow Cells

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• Types of Probes and Flow Cells:

• IN237 Series – Transmission Probe with or without flange

• Total Quartz Flange Immersion Probe

Fiber Optic Process Probes Liquid Probes & Flow Cells

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Optical Path Length d

Beers Law: AB ·c·d

Transmission Probes: Setup for In-Line-Measurements

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Medium

Optical Slit

NIR Spectrum

Analysis

Result

Source

Fibre-Optic Cable

Probe

Detector

15g/l

Fibre-Optic Cable

Transmission Probe IN237 Series: Hellma 661.790 – 793

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Transmission Flow Cells by PLS: ProTec TM50 and ProTec TM80 Series

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Transmission Flow Cells by PLS: ProTec TM50 and ProTec TM80 Series

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• Materials: Stainless Steel 1.4571 (316Ti) or on request: Hastelloy, stainless steel 1.4435 (316L), Tantalum, PTFE or PVDF

• Sapphire windows and Isolast® O-ring seals, other sealing materials on request

• Optical path length: 1 to 100 mm

• Optical fiber: 600 µm, 2 x SMA-905

• Temperature range: -20 to 230°C (depending on sealing material)

• Pressure range up to 250 bar (depending on flange)

• Connection: DIN or ANSI flanges, others on request

• Principle of transflection combines transmission and reflection components.

• Types of Transflection Probes:

• IN271X-02 (6+1): Multifiber Transflection Probe

Fiber Optic Process Probes Transflection Probes for Emulsions etc.

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Fiber Optic Process Probes Transflection Probes for Emulsions etc.

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Rear-coated mirror for reflection

Light beam

Light path

Window

© by Hellma

• The light passes the medium, is reflected by a rear-coated mirror and passes through the solution a second time. Additionally, diffuse reflectance takes place in emulsions, dispersion etc., e.g. during crystallization.

Probe IN271X-02: Multifiber Transflection Probe

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Illumination

Reception

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Innovation with Integrity

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