Viavi Near InfraRed (NIR) Spectrometers

Advanced NIR Analysis Solutions

Viavi MicroNIR OnSite-W
MicroNIR OnSite-W

Product Overview

VIAVI MicroNIR OnSite-W system comes with the MicroNIR Pro software suite, which supports data acquisition, calibration, method development, user management, and real-time prediction. With MicroNIR Pro, developers can process data and build complete chemometric models using regression and classification algorithms such as PLS, MBSD, SMV, and PCA. It also supports batch predictions on stored datasets.The software includes tools for instrument performance qualification in compliance with EP 2.2.40 and USP 1119, as well as features enabling 21 CFR Part 11 compliance. An optional enhanced OPC interface is available for seamless integration with process control systems.In addition, the OnSite-W system provides a standalone tablet application with a simplified user interface for field use, supporting both data acquisition and real-time prediction. Recommended hardware and software requirements are listed in the specifications.

Technical Specifications
Illumination SourceTwo integrated vacuum tungsten lamps
Lamp Life>40,000 hr
Sample Working Distance3 mm from window optimal, 0-15 mm
Dispersing ElementVIAVI linear variable filter (LVF)
Detector128 pixel InGaAs photodiode array
Wavelength Range908-1676 nm (11,012-5966 cm-1)
Pixel-to-Pixel Interval6.2 nm for 950-1650 nm
Spectral Bandwidth (FWHM)<1.25% of center wavelength, 1% typical (e.g., @1000 nm <12.5 nm)
Analog-to-Digital Converter16 bit
Dynamic Range (Max)1000:1
Measurement Time (Typical)0.25 - 0.5 sec
Signal-to-Noise Ratio (Typical)25,000
Size (L x D)194 mm (6.64”) x 47 mm (1.85”)
BatteryRechargeable Li-ion, not removable
Battery Run Time/Charge>10 hours continuous with lamps on
Battery Cycle Life>75% capacity after 300 charge cycles
Battery Charge Time3.5 hours at 1 A
Export Data FormatsCAMO .unsb, Grams .spc, ASCII .csv
Operating SystemMicrosoft Windows 10 Pro
Minimum Screen Resolution (Tablet/PC)1920 x 1080 / 1366 x 768
Software CompatibilityMicroNIR Pro 3.0 and above
Qualified PCMicrosoft Surface Pro 6 (tablet or PC)
Qualified Tablet PCDell Latitude 7212 Rugged Extreme
Operating Temperature-20 ~ 40 °C (noncondensing)
Viavi MicroNIR pat-u
MicroNIR PAT-U

Product Overview

VIAVI MicroNIR™ PAT-U is a compact, USB-powered NIR spectrometer for real-time, in-line process monitoring. With a rugged stainless-steel design (IP65/IP67), it enables non-destructive analysis in pharmaceutical, food, and chemical manufacturing. Supported by MicroNIR Pro software, it delivers reliable performance for raw material ID, blend uniformity, and real-time quality control.

Technical Specifications
Illumination SourceTwo integrated vacuum tungsten lamps
Bulb Life>40,000 hours
Illumination GeometryFlood illumination / 0° observer
Input Aperture Dimensions2.5 x 3.0 mm
Sample Working Distance0 - 15 mm from window
Dispersing ElementLinear variable filter
Detector128-pixel InGaAs photodiode array
Pixel Size / Pitch30 µm x 250 µm / 50 µm
Wavelength Range950 - 1650 nm (10,526 - 6060 cm-1)
Pixel-to-Pixel Interval6.2 nm for 950 - 1650 nm
Spectral Bandwidth (FWHM)<1.25% of center wavelength (1% typical), e.g., @1000 nm resolution <12.5 nm
Analog-to-Digital Converter16 bit
Dynamic Range (Max)1000:1
Measurement Time (Typical)0.25 - 0.5 second
Integration Time10 ms typical, minimum 10 µs, maximum limited by dark signal
Computer InterfaceUSB 2.0
Spectrometer Weight318 g (11.2 oz); with window collar: 368 g (13 oz)
Size45 mm diameter x 69 mm tall
PowerUSB powered (<500 mA @5V)
Data FormatEncrypted, Unsb, CSV, SPC output
Operating SystemWindows 7, 8, 8.1
Software AvailableMicroNIR Pro standard, Unscrambler X Lite, MicroNIR Process
Operating Temperature0 - 40 °C (non-condensing)
EnclosureStainless steel 316, dust and waterproof, sealed and cleanable to IP67
MountingAdaptable stainless steel tri-clover mount, screw into welded flange
Viavi MicroNIR pat-ux
MicroNIR PAT-Ux

Product Overview

VIAVI MicroNIR PAT-Ux is a rugged, miniature near-infrared (NIR) process spectrometer engineered for use in hazardous (explosive risk) industrial environments. It enables real-time, non-invasive monitoring of processes such as drying, blending, granulation, and compositional (e.g. moisture, protein, fat) analysis in situ — even if flammable gases, vapors, dusts, or fibers are present.

Feature
Instrument HeadØ 44.6mm x 112mm
Barrier Box>313 x 313 x 206 mm (12.3 x 12.3 x 8.1”) 17.5 kg (38.6 lbs.)
Connecting cable1.25m (length)
User connectionsEthernet 24VDC power External trigger (optional)
CertificationsClass I Div. 2 Zone 1 & 2 Class II Div. 2 Zone 21 & 22 Class I Groups C & D Class II Groups E, F, and G
Viavi MicroNIR PAT
MicroNIR PAT-W

Product Overview

VIAVI MicroNIR™ PAT-W is a wireless, battery-powered NIR spectrometer designed for real-time process monitoring in pharmaceutical, food, and chemical production. With its compact, stainless-steel housing (IP65/IP67) and Bluetooth connectivity, the PAT-W enables non-destructive, in-line analysis without cables or external power.Equipped with dual tungsten lamps and a 128-pixel InGaAs photodiode array.

Feature
Instrument HeadØ 44.6mm x 112mm
Barrier Box>313 x 313 x 206 mm (12.3 x 12.3 x 8.1”) 17.5 kg (38.6 lbs.)
Connecting cable1.25m (length)
User connectionsEthernet 24VDC power External trigger (optional)
CertificationsClass I Div. 2 Zone 1 & 2 Class II Div. 2 Zone 21 & 22 Class I Groups C & D Class II Groups E, F, and G