Product Overview: Process Analyzers for NIR, UV-Vis Spectroscopic Techniques

Proven Accurate Real Time Analysis

Spectroscopy is perfectly suited for accurate real-time analysis and monitoring of continuous and batch processes. The near infrared (NIR), as well as the ultraviolet and visible (UV-Vis) regions of the spectrum provide a wealth of information about many chemical and physical properties to help operators control their processes better.

Guided Wave Process Analyzers

Guided Wave designs, engineers and manufactures complete process analyzer systems. Our analyzers are based on NIR and UV-Vis spectroscopic techniques. These analyzers are adaptive in nature; meaning that the analyzer can be programmed to measure many different parameters related to many different processes.
• Industry-proven process NIR and UV-Vis analyzers
– for online, real-time analysis
• Multi-channel for multiple stream measurements
– for reduced cost-per-sample-point
• Fiber-optic based system
– to allow analyzer placement in a safe zone

Application Examples

  • ASTM
  • Benzene
  • Color Measurements
  • Ethanol in Gasoline
  • Fuel Blending
  • Hydrogen Peroxide Vapor
  • Octane
  • OH Number
  • Polymer/ Resin
  • RON/ MON
  • Saybolt
  • TMAH in Water
  • Urethanes
  • Water in Solvents

Enclosure Options for ClearView db Process Analyzer

ClearView db enclosures for General Purpose, X-purged for explosive areas (Class I Division 1 or Zone 1), Z-purged (Class I Division 2)

Choosing the Analyzer

Guided Wave analyzers are either full spectrum devices (spectrometers) or set for distinct wavelengths (filter photometers). Below is a brief comparison:

Full Spectrum Analyzer (Spectrometer)

All wavelengths available

• Adaptive
- Multiple applications possible
- Full programming capability
• Full outlier detection

Discrete Spectrum Analyzer (Filter Photometer)

• Limited number of discreet wavelengths
• Limited adaptability
- Applications limited to wavelengths available in optical fibers

Product Overview

The following is a basic product line overview of Guided Wave’s process analyzers to help you choose the best solution depending on your specific requirements. Guided Wave collaborates with you on application development for an individual solution. Each analyzer is available with several options for easy adaptation to different process installations.

Guided Wave NIR Analyzers

For NIR transmission spectroscopy to be effective the sample stream must be a translucent, homogenous solution (liquids or gas) and the species of interest should have C-H, O-H, or possibly N-H or S-H bonds to detect.

ClearView® db Process Analyzer – Photometer

The primary attraction of any photometric analyzer is its low cost, however the compromise is usually performance. Guided Wave has dramatically improved photometer performance by adding our unique dual-beam optics, which provides long term, stable operation.

• Simple to use instrument for more straightforward applications
• Fiber optic based, process rugged, filter photometer
• 1 or 2 sample points
• Use up to 6 wavelengths between 450 and 2150 nm, allowing for multiple analyses per stream
• Dual-beam to enhance long-term stability
• Modbus TCP Ethernet data communication
• Local touch screen display
• Compatible with all Guided Wave sample interfaces (Probes, Flow Cells, etc.) and Fiber Optic Cables
• Available with optional enclosures, certifications, color LCD screen, analog and digital input and outputs plus temperature and       pressure correction input card.

Exclosures and Certifications
• NEMA, NEMA 4X enclosures
• Z purged CI, D2
• X-Proof CI, D1
• AIECEx or ATEX certification for CI, D1

NIR-O™ Process Analyzer – Spectrometer

Process engineers, operators, and researchers will appreciate NIR-O’s ability to monitor up to 12 process streams or points within a stream with accuracy, repeatability, and reliability.

• Full-spectrum, extended-range, near-infrared process spectrometer (XNIR, 1000-2100 nm) for a wider range of applications
• Real-time, in-process measurements for fast, reliable on line analysis and monitoring of complex process streams
• Dual-beam design to maximize long-term stability and in-process robustness
• Advanced, modular design for improved performance, longer up-time, and easy maintenance
• Up to 12 independent channels (process sampling interfaces) maximizes flexibility and reduce cost per sample point
• Built-in Modbus communications
• Compatible with popular chemometric packages
• Compatible with all Guided Wave sample interfaces (Probes, Flow Cells, etc.)
• Available with optional certifications, touch screen and external 4-20mA analog I/O Box custom configured for easy adaptation to different kinds of process installations

Guided Wave UV-Vis Analyzers

UV/Vis spectroscopy is routinely used in analytical chemistry for the quantitative determination of different analytes, such as transition metal ions, highly conjugated organic compounds, and biological macromolecules. Spectroscopic analysis is commonly carried out in solutions but solids and gases may also be studied. Guided Wave offers two UV-Vis analyzers, both diode array full spectrum (spectrometers).

M508plus UV-Vis Diode Array Process Analyzer – Spectrometer

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 one each channel making it suitable for many applications in chemical and polymer plants, refining and petrochemical, pharmaceuticals and other speciality chemicals, paints and varnishes, adhesives, wastewater management, biotech, etc.

• Spectral range 200 – 850 nm (UV-Vis)
• Monitors up to four (4) process sample points simultaneously
• Bandwidth < 3 nm
• Minimum Scan Time 5 milliseconds
• Instrument Controller Unit-Internal with solid state drive (call factory for specifications)
• Touch Screen Monitor 15 in [38 cm] XGA 1024 x 768 (General Purpose & Class I Division 2 only)
• Hazardous Area Options Z-Purge (CI D2), X-Purge (CI D1), ATEX (Contact Factory)
• GW508OS Version 3 software package included which can handle up to 4 spectrometers
• Available with optional certifications, analog and digital discrete communications package and Unscrambler® predictor for expanded modeling capabilities

Benchtop 508plus UV-Vis Diode Array Process Analyzer – Spectrometer

The Benchtop 508plus is a single-channel version of the popular M508plus process analyzer. It is packaged for use in either laboratory or pilot plant environments. The small size allow for use in many locations. The software runs on an external computer connected to the analyzer via USB.

  • Spectral range 200 – 850 nm (UV-Vis)
  •  Bandwidth < 3 nm
  • Minimum Scan Time 5 millisecond
  •  Instrument Controller Unit Internal w/ solid state drive (call factory for specifications)
  • Touch Screen Monitor 15 inch [38 cm] XGA 1024 x 768 (General Purpose & Class I Division 2 only)
  •  GW508OS Version 3 software package included which can handle up to 4 spectrometers
  •  Available with optional certifications, and Unscrambler® predictor for expanded modeling capabilities

Compact Size for More Space on Your Lab Bench
• Dimensions (Width x Depth x Height):
- 12 in x 10 in x 6.18 in
- 40.48 cm x 25.4 cm x 15.7 cm

Application Specific NIR Analyzers

From ASTM color measurements to hydrogen peroxide and water vapor analysis, for sterilization, Guided Wave offers several application specific analyzer systems. These analyzers are built on the proven multiwave-length, dualbeam ClearView db technology and provide a complete “ready-to-go” solution.

Another advantage of the ClearView db analyzer platform is that it is configurable to many different color scale measurements in addition to those described here. The two channel ClearView db analyzer can be configured for two different color measurements, such as ASTM and Saybolt, accomplishing both measurements with one analyzer, simultaneously.

“Ready-to-Go” Analytical Systems Include

• Analyzer - ClearView db filter photometer technology
• Optically matched fiber cables
• Sample interface - insertion probe or flow cell
• Control software and pre-calibration to the specific application

Color Measurements

Many liquid product specifications are based on color measurements. Changes in color can be an indicator of final product quality as well as a means to control process variables when implemented in real-time. Several different color “scales” are utilized in measuring color in different products or industries.

Some common examples are ASTM color, Saybolt, and APHA (aka Platinum-Cobalt, or Hazen). Using a Guided Wave color analyzer system to automate the measurements within a process, eliminates the visual judgement of a technician and delivers online real-time color values to the process operators that can be used for quality control or product quality certification.

Guided Wave Color Analyzer Features

• Simple to use instrument on the ClearView db platform
• Pre-calibrated for specific ASTM color measurement
• Fiber optic based, process rugged
• 1 or 2 sample points
- *1 sample point for turbidity, second channel available for additional analysis
• Modbus TCP Ethernet data communication
• Local touch screen display
• Compatible with all Guided Wave sample interfaces (Probes, Flow Cells, etc.) and Fiber Optic Cables

Options for Guided Wave Color Analyzers

• NEMA, NEMA 4X enclosures
• Z-Purge CI, D2
• X-Proof CI, D1
• IECEx or ATEX certification for CI, D1
• 4-20 mA analog and digital input and outputs
• Temperature and pressure correction can be done with input card
• Turbidity functionality for use with Guided Wave Turbidity Probe or Flow Cell*
• Color LCD touch screen

Guided Wave Color Analyzers

• APHA / Pt-Co (Hazen) (ASTM D1209) Color Analyzer
• ASTM (D1500) Color Analyzer
• Saybolt (ASTM D156, D6045) Color Analyzer
• Turbidity* (NTU) and/or Haze (ASTM D4176) Color Analyzer

Sterilization Applications

Hydrogen peroxide (H2O2) is widely used for sterilization in a variety of industries as an environmentally friendly alternative to previous sterilizing chemicals. The main difficulty with this technique is the need to measure concentrations of H2O2 in a sterilized environment, in the presence of water vapor (H2O) in vacuum and ambient conditions.

Hydrogen Peroxide Vapor (HPV) Analyzer System

Guided Wave’s HPV analyzer is a simple turnkey solution for the measurement of hydrogen peroxide and water (H2O2 and H2O) concentrations in vapor phase. These are both measured together because they are codependent. The analyzer operates in real time, which takes the guesswork out of determining the H2O2 and H2O concentrations during cycle development and throughout the actual sterilization cycle. The user gains continuous, accurate data for documentation and validation.

Low Pressure Monitoring - Accurate, Reliable Results

Unlike chemical sensors, the HPV analyzer is able to measure H2O2 and H2O concentrations in vapor phase under ambient or vacuum conditions. Many processes use low pressure in the sterilization process to ensure penetration of product packaging. The HPV analyzer allows you to monitor these cycles so you can determine that the correct concentration of H2O2 and H2O were present during each cycle.

• Rapid response
• Multiple sample points on one analyzer
• Not subject to sensor poisons or analyte degradation
• Built-in validation available

Quick Installation and Start-up

The complete system consists of HPV analyzer one or two G-SST probes, and a pair of fiber optic cables for each probe. The HPV analyzer is pre-calibrated at the factory. No programming is required by the user. Start-up requires powering the HPV analyzer, connecting the probe or probes via the fiber optic cables, taking a ZERO reading in the dehumidified isolator and the H2O2 and H2O concentration measurements may begin.

HPVA Analyzer Specifications

• H2O2 vapor … 0.1 – 50 mg/L (72 – 35,600 ppm V/V), with ± 0.1 mg/L error
• H2O vapor … 1.0 mg/L to condensation (>1345 ppm), with ± 1.0 mg/L error

HPVA Features

• Simple to use instrument based on the NIR spectroscopic ClearView db platform
• Pre-calibrated for Hydrogen Peroxide and Water vapor monitoring
• Excellent under ambient or vacuum conditions
• Fiber optic based, process rugged
• 1 or 2 sample points
• Dual-beam to enhance long-term stability
• Modbus TCP Ethernet data communication
• Local LCD color touch screen display HPVA Options
• Enclosures – Stainless Steel, NEMA 4X or Carbon Steel
• Z-purged CI, D2
• X-Proof CI, D1
• Custom calibration for elevated temperatures
• 4-20 mA analog and digital input and outputs Typical Configuration
• HPV Analyzer in stainless steel enclosure
• 1 channel, 4-20 mA output
• 2 x 6 m fiber optic cables connect the HPV Analyzer to the 50 cm pathlength G-SST Sanitary Flange Probe within the Isolation
Chamber (enclosure, etc.)

HPVA Options

• Enclosures – Stainless Steel, NEMA 4X or Carbon Steel
• Z-purged CI, D2
• X-Proof CI, D1
• Custom calibration for elevated temperatures
• 4-20 mA analog and digital input and outputs

Typical HPVA Configuration

• HPV Analyzer in stainless steel enclosure
• 1 channel, 4-20 mA output
• 2 x 6 m fiber optic cables connect the HPV Analyzer to the 50 cm pathlength G-SST Sanitary Flange Probe within the Isolation
Chamber (enclosure, etc.)

The Smart Choice for NIR or UV-Vis Analyzers (Spectrometers and Photometers)

Guided Wave analyzers deliver accurate, real-time process measurement results. Their linearity and repeatability, as well as their low maintenance requirements make them a cost effective, smart choice to help optimize production, improve yields, ensure consistent product quality and enhance profitability.

Guided Wave

Guided Wave has been a leader in online, process monitoring for over 35 years. Established in 1983, Guided Wave was recognized as an industry leader when it delivered the first fiber optic-based NIR analyzers. Today Guided Wave has NIR analyzer installations on six continents and in more than 50 countries, with thousands of analytical instruments sold worldwide.

Guided Wave is the only process NIR manufacturer that provides a complete optically matched system, yielding the best throughput efficiency and long-term performance, exceeding industry standards. These workhorse analyzers have been industry-proven for over three decades with individual analyzers in the field typically running 24/7 lasting more than 10 years with >99% uptime.