01 34 52 10 30

MicroNIR PAT-U NIR spectrometer

Continuous manufacturing process control

  • compact
  • integratable
  • real time response
Technology used : NIR | Near Infrared
PAT-U Brand : Viavi
Ask for a quote

The PAT-U is a near infrared spectrometer used for in-line process control. Used in many industries, it allows real-time monitoring of mixtures, uniformity, drying and moisture monitoring, reaction monitoring, granulation, freeze-drying, and other similar applications.



Designed for regulated environments

Designed for rigorously GMP regulated environments, the PAT-U integrates directly into industrial facilities and requires minimal maintenance. There are no moving components or expensive fiber optic cables, resulting in excellent stability and superior performance.

Standard installation

This integration requires a weld in the flange, a sanitary flange bracket, a sapphire window and a retaining ring with O-rings. The flange is welded into a hole cut in the mixer cover, then the sanitary flange bracket, window and retaining ring are assembled. Then the PAT-W is secured against the window and a sanitary flange with a standard tri-clamp (or C-clamp). All parts can be removed for easy cleaning and maintenance.

Threaded mounting

The threaded mount allows a user to weld a mount into the processing equipment, then connect the PAT-W using the threaded tip of the spectrometer. This mount also has a removable window to allow for easy cleaning and maintenance. The PAT-W has a built-in 9-axis inertial measurement unit (IMU), which allows accurate and repeatable triggering of spectral acquisition when the PAT-W is mounted on a rotary mixer.



Monitoring of manufacturing processes (granulation, drying, uniformity, reaction).

Feed & food industry

Control of moisture, protein, fiber, etc.


Polymers, petrochemistry, chemical reaction monitoring.


MicroNIR PAT-U NIR spectrometer
Technology NIR (near infrared)
Illumination source Two integrated vacuum tungsten lamps
Bulb life >40,000 hours
Illumination geometry Flood illumination/ 0° observer
Input aperture dimensions 2.5 x 3.0 mm
Sample working distance 0 – 15 mm from window
Dispersing element Linear variable filter (LVF)
Detector 128-pixel InGaAs photodiode array
Pixel size/pitch 30 µm x 250 µm/50 µm
Wavelength range 950 – 1650 nm (10,526 – 6060 cm-1)
Pixel-to-pixel interval 6.2 nm for 950 – 1650 nm
Spectral bandwidth <1.25% of center wavelength
Analog-to-digital convertor 16 bit
Dynamic range (max) 1000:1
Measurement time (typical) 0.25 – 0.5 second
Integration time 10 ms typical, minimum 10 µsec, maximum limited by dark signal
Computer interface USB 2.0
Size 45 mm diameter x 69 mm tall
Weight 318 g (11.2 oz) With window collar: 368 g or (13 oz)
Power USB powered (<500 mA @5V)
Data format Encrypted, Unsb, CSV, and SPC output
OS Windows 8.1, 8, and 7
Software MicroNIR Pro standard, Unscrambler X Lite, MicroNIR Process
Operating temperature 0 – 40 deg C (non-condensing)
Enclosure Stainless steel 316: dust and waterproof, sealed and cleanable to IP67 standard
Mounting Adaptable stainless steel tri-clover mount, screw into welded flange
Compliance 21 CFR part 11, ATEX, USP 1119, Ph. Eur. 2.2.40


The MicroNIR Pro software suite includes functionality for data acquisition, calibration and method development, user management and real-time prediction. MicroNIR Pro can create and apply comprehensive chemometric models using regression and classification algorithms, including PLS, Moving Block, SMV and PCA analyses. Batch mode predictions on stored data are also supported. Options include an enhanced OPC interface for integration with process control systems and prediction engine add-ons.


MicroNIR PAT-U for continuous manufacturing
Ask for a quote

    * mandatory information

    By sending us your email and any other personal information, you agree that the information is used in accordance with our data protection policy provided for legal notice of our website. This data will not be stored for any other purpose than to contact you. They will not be sold or traded.