How to Choose the Right Load Cell for Your Weighing System
Selecting the correct load cell is essential for ensuring accurate measurement, safety, and long-term system reliability. This guide explains the key factors to consider when choosing a load cell for industrial applications including scale manufacturing, process automation, force testing, batching systems, and tank weighing.
What Is a Load Cell?
A load cell is a force-measurement sensor that converts applied weight or tension into an electrical signal. This signal is sent to a scale indicator or PLC, which calculates the final displayed weight.
Types of Load Cells
Choosing the right design depends heavily on your installation and loading direction.
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Best for: Tension + compression
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Used in: Hanging scales, force testing
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Why choose: High accuracy and easy mounting
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Best for: Floor scales, hoppers
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Why choose: Low-profile and durable
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Best for: Truck scales and axle scales
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Why choose: Handles high movement loads and heavy-duty applications
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Best for: Industrial platforms and tank systems
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Why choose: Superior side-load resistance
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Best for: Tank and silo weighing
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Why choose: Extra high capacity and strength
Load Cell Capacity Selection
Always choose a capacity that accounts for:
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Maximum expected load
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Live-load movement and impact forces
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Potential overload conditions
Rule of thumb:
✔ 125–150% of expected maximum load is recommended
✔ For dynamic or heavy-impact installations, go higher
Environmental Protection & Ratings
Industrial environments demand rugged sensors. Look for:
Protection FeatureWhy It Matters
IP66 / IP68 environmental sealingWet, washdown, or dust-heavy areas
Stainless Steel ConstructionCorrosion resistance in harsh environments
Welded sealsHigher durability than adhesive seals
NEMA 4X complianceFood, chemical, outdoor installations
Accuracy & Output Specifications
Key specifications to evaluate:
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Accuracy Class (OIML / NTEP)
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Sensitivity (mV/V)
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Creep and linearity tolerance
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Temperature compensation range
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Safe overload & ultimate overload %
If you need Legal-for-Trade compliance, ensure:
✔ The load cell is NTEP Certified
Mounting Hardware & Installation
The loading direction must match the cell’s design:
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Always maintain proper alignment
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Use correct mounting plates/footing
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Avoid side loads and torque forces
➡ Ask us for mounting kits matched to your model
Electrical Considerations
Compatibility with instrumentation is critical:
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Excitation voltage (VDC range)
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Output resistance (Ω)
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Cable length and shielding
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Connector compatibility with scale indicators or PLCs
Load Cell Applications We Support
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Floor & bench scales
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Hopper and tank batching systems
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Conveyor and packaging automation
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Truck and vehicle weighing
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Force measurement and test stands
📞 Need Help Selecting a Load Cell?
Our experts can assist you with capacity calculations, replacement matching, and full weighing-system planning.
➡ Email:Cody@americanscalesupply.com
➡ Shop Load Cells
