Moisture & Compositional

Guardian-HD Web Profiling Series

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Product Overview

Accurate Moisture, Coat Weight & Film Thickness Profile Measurement

The Process Sensors Guardian-HD Web Profiling Series is a rugged and world-class analyzer to measure moisture, coat weight, adhesive thickness, and web temperature for all paper, film, and web-converting processes. It provides a non-contact, non-destructive on-line measurement of a complete zoned web profile, helping operators reduce instances of edge curl and lay flat issues that can result from improper moisture control. This translates to improved quality and consistency, less waste, and a quick return-on-investment.

The Guardian-HD Series features a Near Infrared (NIR) sensor that connects to a traversing frame that continually scans material across the width of the web for real-time analysis of important quality parameters. Moisture and coat weight measurements from the Guardian-HD Series can be made on many substrates and for wet-end and dry-end application processes.

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Features

Easy calibration, operation, and standardization
Rugged, sealed industrial frame and linear actuator withstands hot and humid environments common with paper and converting processes
Automatic edge detection senses roll width to streamline set-up processes, and realigns to accommodate web drift
Configurations available to monitor and control multiple Guardian-HD systems simultaneously
Easily connect to closed-loop control systems or local alarms

Benefits

Minimize edge curl and lay flat issues with 100% real-time inspection of moisture, coat weight, thickness, and temperature of converting lines
Decrease manual start-up times by 20%, eliminating the need for time-consuming lab testing and adjustments
Each system can be customized to the width of the web, along with the ability to position the NIR sensor wherever it is needed

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Applications

Rugged NIR Scanning for a Complete Zoned Web

The Guardian-HD Series is the optimal moisture and coat weight control system that serves a diverse array of applications for the web converting market.

Examples include:

Moisture and coatings on paper webs
Thickness of hot melts
Thickness of pressure sensitive adhesives
Thickness of water-based adhesives
Paper pulp
Plastic film thickness
Biax film
PVB & EVA film
Exit and inlet dryer moisture measurement

Cast film
Coated abrasives
Wax coatings
Extrusion coatings on paper/foil
Moisture in corrugated board
Textiles
Pattern coatings (move and park)
Flexible packaging
Flooring

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Measure Quality Where it Matters

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Product Lineup

Hundreds of web-converting operations trust the Guardian-HD Web Profiling Series to identify production inefficiencies and generate a quick return on investment. They help operators control moisture and coat weight parameters to within one tenth of a percent to meet product specs every time.

The Guardian-HD Series systems are built to last, simple to install, and virtually maintenance free for years of reliable, consistent results. Choose from three models based the needs of your application or operation.

Guardian-HD Basic

Single-scanner operation to measure moisture, coat weight, and temperature (optional)
Easy-to-read 5.7” high-resolution non-Windows®-based display
Store up to 50 product recipe codes
Analyze up to 16 individual zones across the web

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Guardian-HD Essential

Single-scanner operation to measure moisture, coat weight, and temperature (optional)
Easy-to-read 12” high-resolution non-Windows® -based touch screen display
Store up to 100 product recipe codes
Analyze up to 50 individual zones across the web
Lane (move and park) and machine direction measurements

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Guardian-HD Elite

Central monitoring of single or multiple Guardian-HD systems
Windows®-based 19” touch screen industrial PC with proprietary ViewerSuite software
Advanced roll reporting and raw data-logging capabilities for traceability and audits
Store up to 100 product recipe codes
Up to 100 individual zones across the web
Designated lane and machine direction measurements and trending
Additional 5.7” touch screen display for troubleshooting and local monitoring

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How It Works

Continuous Scanning of the Full Web Profile

The Guardian-HD Series features an NIR sensor that is connected to a traversing frame to continually scan the full-width of a web profile for moisture and coat weight parameters. Real-time data is presented on an easy-to-understand touchscreen display for cross direction web profiling, lane and machine direction measurements. In some configurations, larger displays with Windows®-based software are available for monitoring multiple line profiles at a single central console.

All Guardian-HD Series configurations allow for USB data-logging with the ability to export to .csv, .xml or .txt file formats.

Each Guardian-HD frame is custom-built for its specific application, and the analysis software can be pre-programmed for specific recipe codes for the material it is analyzing. The NIR sensor can also be positioned in different ways to accommodate reflective surfaces (common with wet-end coating applications) as well as horizontal, vertical, and under-side scanning.