Measurement Systems Built for the Mill Floor
Every stopped mill, every scrapped coil, every out-of-tolerance shipment traces back to a reading you couldn’t trust. KELK builds the Roll Force, Tension, and optical dimensional measurement systems that steel and aluminum producers rely on to keep hot and cold mills running inside spec.
The Problem With “Good Enough” Sensors
Rolling mills run hot, dirty, and under continuous mechanical shock. Measurement systems that aren’t built for that reality drift, fail, or get replaced long before their rated life — and every one of those failures shows up as scrap, unplanned downtime, or a customer complaint.
Unplanned Load Cell Failure
A failed roll force sensor in a hot mill can idle an entire line. Replacement and recalibration costs are rarely the real bill — lost production is.
Drift You Can’t See
Sensors that lose accuracy gradually let out-of-tolerance material through before anyone notices, turning into scrapped coil and customer returns.
Sensors Rated for the Wrong Environment
Instrumentation designed for general industry corrodes, overheats, or loses calibration in hot strip and plate mill conditions within a single production cycle.
One Measurement Architecture, Cast to Coil
KELK designs strain-gage force sensors and optical dimensional gaging as a single measurement architecture — so mill control systems get consistent, high-accuracy data from cast to coil.
Roll Force — Rollmax Load Cells
Direct roll force measurement with higher overload capability, superior temperature compensation, and lower error than extensometer-based estimates.
Learn more →Tension — Tensiometers & Looper Assemblies
Hermetically sealed tension load cells and looper arm assemblies deliver strip tension data immune to side-force and temperature-gradient error.
Learn more →Pressure — Fluid Pressure Transmitters
Rugged pressure transmitters built for hydraulic and process fluid lines in mill environments, holding calibration where standard instrumentation degrades.
Learn more →Optical — Dimensional & Optical Gaging
Non-contact width, thickness, flatness, and camber measurement — including ACCUBAND width gages accurate to ±0.4 mm at 2 sigma.
Learn more →Velocity & Length Sensing
Laser velocimeters and length measurement systems feed the speed and position data mill control systems need for crop optimization and synchronization.
Learn more →Custom Application-Specific Load Cells
Custom-engineered weighing and force sensors designed and built to survive metal-producing environments where a failed weighing component halts the process.
Learn more →The Rollmax Warranty
KELK Rollmax Load Cells are guaranteed against failure of any kind, however caused, for five full years — not just defects in material or workmanship. Mills that upgrade from other brands can calculate, in advance, what they’ll save in replacement cost alone.
Specified Into the Process — Not Bolted on After
From hot mill roughing stands to cold rolling finishing lines, KELK measurement systems are built into the process itself.
Roll Force, Tension & Crop Optimization
Looper Load Cell Assemblies derive strip tension for mill control systems while Rollmax Load Cells measure roll force directly at the housing posts. KELK’s crop optimization systems — combining crop imaging, laser velocimeters, hot metal detection, and shear control — are installed in nearly 150 steel mills worldwide.
Dimensional Measurement for Tight-Tolerance Strip
ACCUBAND width gages install in the tight spaces of tension levelers, side trimmers, tandem mill exits, temper mills, and slitter/rewinder lines, holding ±0.4 mm accuracy with LED illumination built for continuous duty.
Force & Dimensional Gaging Under Continuous Load
Camber gages, plate outline systems, and flatness/contour gaging give plate and aluminum producers the dimensional feedback loop needed to hold shape and gauge tolerance across long production runs.
Custom Load Cells for Mission-Critical Weighing
Where a failed weighing component can idle an entire metal-forming line, KELK builds custom load cells to the same rugged philosophy as its Rollmax line — designed to outlast standard weighing hardware by years.
Common Questions From Mill Engineers
Send Your Mill Drawings to a KELK Application Specialist
Get a free, no-obligation installation assessment — or download the full Roll Force, Tension, and Dimensional Measurement product line guide.