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Model 508plus UV-VIS Process Analyzer

GUIDED WAVE’S Model 508plus Process Analyzer is a single or multi-channel, fiber optic, UV-Vis spectrometer system designed for use in process environments. Configurable with up to 4 channels, the Model 508plus comes in a NEMA 4x enclosure with built-in thermal control to ensure the most consistent performance possible while in 24/7 service mode. Up to 16 parameters may be monitored on each channel making it suitable for many applications in chemical and polymer plants, refining and petrochemical, pharmaceuticals and other specialty chemicals, paints and varnishes, adhesives, wastewater management, biotech, etc. It has a built-in computer control unit with optional touch screen for convenient user interface.


High sensitivity 2048 Pixel Diode Array Spectrometer
Built-in compact Xe fl ash UV-Vis light source
Rapid data collection
Built-in Instrument Control Unit with door mounted touch screen
Analyzer control program developed in LabVIEW™ featuring customizable settings and trending capability
Modbus Ethernet TCP/IP communications with built-in event setup
Optional Opto-22 panel and communications for 4-20 mA analog and discrete interfacing
16 Analog Inputs for temperature and pressure correction of vapor/gas streams (requires Modbus or OPTO 22)
Compatible with Guided Wave’s proven probe and flow cell products
Fully insulated NEMA 4 or 4X enclosure with built in Internal Thermal Control
Full spectrum scanning, 200 nm to 850 nm
Multi-channel design from 1 to 4 channels
Individual pulsed Xenon source on each channel
Unscrambler® Calibration Model Ready (with optional Unscrambler Predictor)
Simple B-Vector and formulaic models
Built-in Color Analysis
User definable prediction engine
File formats - GW ASCII/BINARY and Grams SPC


Class I Div 2 Groups C & D, Z-Purge
Class I Div 1 Groups C & D, X-Purge (No touch screen for Div I)
SNAP I/O analog and discrete communications package by Opto-22 (Modbus Ethernet TCP/IP)
Unscrambler® Predictor for expanded modeling capabilities
Compatible with 400, 500 and 600 μm diameter UVSR fiber

NIR analyzer


L*a*b* and other color coordinates
Solvent recovery purity
Maleic acid in tetrahydrofuran (THF)
Trace (ppm level) impurities in wash water; Clean-In-Place for Pharma
Polynuclear aromatics (PNAs) in middle distillates
Phenol in cyclohexanone
Sodium hypochlorite in bleach solutions
Aromatics in monomers
Benzene in cyclohexane
Saybolt or ASTM color of diesel and jet fuels
Toluene diisocyanate in polyurethane
UV inhibitors in polymers
Antioxidants in polymers and plastics
Color and clarity of varnishes
Halogens and various halogenated compounds in vapor streams
Sorbic acid in water
Ferrous chloride in acid
Acetonitrile purity
Hypochlorous acid

Reliable, Rugged, and Flexible

By partnering with Guided Wave you gain the advantage of 35+ years of experience in online process monitoring and stream sample analysis. Our entire product line is designed and developed to meet the challenges of the most demanding production environments. The Pulsed Xenon source lamp used in the Benchtop 508plus has a lifetime lasting over two years.