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Web
tension measurement controls
asphalt shingle production
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Asphalt shingle manufacturers worldwide face the same adversaries daily; heat, cold, grit,
vibration, water leakage, and vigorous production schedules. Machine temperatures soar in the pit and slate sections where
molten tar and slate are added and then fall just as rapidly in the cooling section. Water-cooled rolls in the cooling section
often leak directly onto measurement transducers creating further environmental problems.
Vishay BLH Web Tension Systems Solve All Headaches
Robust web tension transducers withstand the difficult conditions of heat, cold, and liquid contamination that are typical in
shingle manufacturing machine zones. Temperature compensated, Full Wheatstone Bridge construction withstands intense machine
vibration as well as temperature swings up to 250°F. NEMA 4 and 4X (100% stainless steel) modules rated to IP67 eliminate
contamination and corrosion problems completely.
Instrumentation designed specifically for web tension measurement complements and enhances
transducer performance. DXt-40 transmitters measure each system transducer independently to provide maximum resolution and
accuracy. Left, right, and total tension displays allow constant visual access to machine functionality.
Premium web tension measurement and control often results in higher machine operating speed
with fewer breaks.
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Load Cells - Vishay BLH
