PSC Guardian-HD

Accurate Moisture, Coat Weight & Film Thickness Profile Measurement

The Guardian-HD Series features a Near Infrared (NIR) sensor connected to a traversing frame that continually scans material across the full width of a web for real-time analysis of quality-critical parameters. It provides non-contact, non-destructive on-line measurement of a complete zoned web profile, helping operators reduce edge curl and lay-flat issues caused by improper moisture control — improving quality and consistency, cutting waste, and delivering a quick return on investment.

Key Benefits

• Minimise edge curl and lay-flat issues with 100% real-time inspection of moisture, coat weight, thickness and temperature across converting lines.
• Decrease manual start-up times by 20%, eliminating time-consuming lab testing and adjustments.
• Every system is customised to the width of your web, with the NIR sensor positioned wherever it’s needed.
• Automatic edge detection senses roll width to streamline set-up and realigns automatically to accommodate web drift.
• Instantly identifies production inefficiencies to reduce waste.

Features

• Easy calibration, operation and standardisation.
• Rugged, sealed industrial frame and linear actuator withstands the hot and humid environments common in paper and converting processes.
• Two models to choose from — up to 100 total measurement zones and up to 100 different recipe codes.
• Graphical display included.
• Easily connects to closed-loop control systems or local alarms.
• Automatic sync of roll reports to a local network.
• Configurations available to monitor and control multiple Guardian-HD systems simultaneously.
• Optional EtherNet/IP, Modbus TCP/IP or OPC server interface.

How It Works

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 from a single central console. All Guardian-HD configurations support USB data-logging with export to .csv, .xml or .txt formats. Each frame is custom-built for its specific application, with software pre-programmed for specific recipe codes, and the NIR sensor can be positioned to accommodate reflective surfaces (common in wet-end coating applications) as well as horizontal, vertical or under-side scanning.

Applications

The Guardian-HD serves a diverse range of web-converting applications, including moisture and coatings on paper webs, thickness of hot melts and pressure sensitive or water-based adhesives, paper pulp, plastic film thickness, biax film, PVB and 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 and flooring.

Food Grade Option

The Guardian-HD sensor is available with a food-grade electroless nickel finish and sapphire or Kel-F window for food production applications, allowing a full array of product entering or exiting a fryer or oven to be scanned.

Software & Warranty

All Guardian-HD Series models run KPM’s proprietary SensorVu Windows-based PC software for set-up, calibration, product code selection, diagnostics and remote trend monitoring, with support for connecting multiple analysers in a single location.

Talk to the Techotrix team to find out whether the Guardian-HD is the right fit for your web line.