Portable FTNIR measurement kit in a rugged, autonomous backpack

The ARCoptix FTNIR-PORT is the ideal platform for measuring diffuse reflectance (DR) in the field. Battery operated, it features a light source, spectrometer, fibered reflection probe as well as an active cooling system with dust filters for robustness and long lasting operation. The entire data acquisition and processing is performed on the fly, and can be conveniently operated from a dedicated handheld measuring head. Easy data traceability is ensured thanks to the addition of metadata (GPS coordinates). The fibered probe is mechanically resistant owing to its stainless steel protective sleeve and contact ferrule. The casing can be easily opened to access the battery in order to swap it or recharge it.

Specifications

Product code	FTNIR-PORT
Instrument	FTNIR-L1-025-2TE (OEM version)
Light source	ARCLIGHT-NIR (OEM version)
Battery autonomy	3h
Fibered probe	6x low-OH, 600 μm core diameter silica fibers, stainless steel protection sleeve
Measuring head	Handheld, acquisition trigger, contact ferrule
Backpack dimensions	450x320x170 [mm]
Total weight	4.5 [kg]
Software interface	Embedded with GPS coordinates and personalized file saving system
Cooling system	Active (air flow) with dust filters

The ARCoptix common path (OEM-PART-CMP) module is an input/output accessory that can be mounted on our OEM010 series. The common path module features a beamsplitter that allows to guide the modulated beam output by the instrument and the light returning from the sample along the same optical path. This accessory coupled to our parabolic reflector for diffuse measurement (OEM-PART-DRP) offers a high-throughput, free-space solution for measuring diffuse and specular reflection in the MID-IR over a broad spectral range, without being limited to the transparency regions of CIR and PIR optical fiber.

Specifications

Product code	OEM-PART-CMP	OEM-PART-DRP
Internal Optics	ZnSe beamsplitter	Gold parabolic reflector
Output beam	Collimated	Focused
Working distance	up to 1m	10mm (to focus from edge)

The ARCoptix liquid cell module (OEM-PART-LCX) has been originally developed for application in high performance liquid chromatography (HPLC). However, the application range is much broader - it can be used as a standalone transmission cell for liquid or even high pressure gases. The OEM-PART-LCX is a high pressure, chemically and heat resistant cell for liquids spectroscopy. The cell has been tested to function up to 210 Bars and 180°C. The cell's body is made of L316 stainless steel (Hastelloy available on request). The optical path length can be set in the range 0.5mm-3.0mm. The wetted surfaces are: gold, sapphire (as a standard), stainless steel (or Hastelloy) and carbon. The choice of these materials makes it particularly suitable for spectroscopy in the transmission windows of organic solvents. The cell can be installed on a tubular extender, and thus it can be inserted inside a thermostat (for example directly next to an HPLC cell) avoiding the re-mixing of the separated mixtures. The spectral range is determined by the used detector of the FTIR and by the window of the cell (2-6μm)

Specifications

Product code	OEM-PART-LCX
Path length	0.5 to 3 mm (chosen and fixed)
Internal volume	< 15 μL
Total transmission	<90% (with air inside)
Internal temperature	20-180 [°C]
Mirrors	gold coating
Window material	Sapphire
Transmission range	2-6μm
Liquid inlet/outlet	Waters compatible fitting with 1/16” capillaries
Power requirement	35W @110-230 VAC or 12 VDC
Dimensions	73x25Ømm (without extender)

Optical fibers are a common building block of many optical systems. Low-OH fused silica multimode fibers are available for operation in the near-infrared. In the mid-infrared, we offer either IFG fibers or polycrystalline fibers depending on the spectral range of interest. Our fibers are terminated with SMA905 connectors and are protected by a polymer jacket. Other connector types, protection jacket or lengths are available on request.

Fibered reflection probes are common accessories to measure specular or diffuse reflection in FT-IR systems. They are especially well suited for applications requiring a lot of flexibility. We offer fibered probes of three different kinds, depending on the fiber constituting glass, each targeting a specific spectral range. Light is brought to the sample via a peripheral fiber bundle which helps in achieving homogeneous illumination, and is collected by single, central fiber.

Specifications

Fiber category	NIR	IFG	PIR
Fiber material	Low-OH fused silica	Indium Fluoride	Polycrystalline
Spectral range [νm]	0.4-2.5	2.0-5.5	4.0-16.0
Spectral range [cm-1]	4'000-25'000	1'800-5'000	650-2'500
Refractive index	1.44	1.5	2.15
NA	0.22	0.3	0.25
Connectors	0.22

Patch cords specifics

Product code	FIB-NIR-600-100	FIB-IFG-600-100	FIB-PIR-900-100
Core diameter	600 μm	600 μm	900 μm
Operating temperature (max)	125 °C	100 °C	140 °C
Bending radius (min)	100 mm		140 mm
Default length	1 m

Fibered probe specifics

Product code	R7-NIR-600-200F	R2-IFG-500-150F	R7-PIR-900-150F
Illuminating bundle	6x 600 μm fibers	2x 500 μm fibers	7x 400 μm fibers
Reading fiber	1x 600 μm fiber	1x 500 μm fiber	1x 900 μm fiber
Probe ferrule	Stainless steel, Ø1/8” (3.175x74 mm)	Stainless steel, Ø1/4” (6.35x74 mm)
Total length	2m	1.5m