| THAYER Model No. |
| 4NAR-6/8 Certified Belt Scale |
| No. of Weigh Idlers |
| 4 |
| Belt Width (W) Inches |
| 24-60 |
| Idler Spacing (S) Inches |
| 36-60 |
| Minimum Load (lbs/ft) |
| 34 |
| Maximum Loading (lbs/idler) |
| 525 |
| Mass Counter-Balanced Weigh Bridge |
| YES |
| Belt Speed (Ft/Min) |
| 10-1000 |
| Accuracy (%) Design Rate |
| 0.125% |
| Accuracy (%) 3:1 Range |
| 0.25% |
| Load Cell Support |
| (1) strain gauge |
Model 4NAR-6/8 NTEP Certified
Thayer Scale’s NTEP-certified conveyor belt scales deliver legally defensible, verifiable accuracy
Thayer Scale’s 4NAR-6/8 NTEP-certified conveyor belt scale is the choice for applications requiring commercial certification for billing purposes. NTEP-certified scales are the ideal belt scales for scenarios involving material transfer with billing or legal custody implications, rail or truck loadouts with target weights, customer-facing delivery receipts or invoices based on weight or internal reconciliation or loss prevention audits.
NTEP certification isn’t just a badge of accuracy — it is a business safeguard. It ensures that weight measurements used in commercial transactions are consistent, traceable, and legally defensible. These belt scales have been proven in service demanding ±0.125% accuracy through independent certification and are engineered to thrive in even the harshest environments.
Industry Applications
Many industries depend on belt scales to handle and track high volumes of material with speed and efficiency.
Mining and Aggregates: Coal, copper, and ore operations often require verification-grade measurements for billing and inventory control.
Fertilizer and Chemicals: NTEP-certified scales offer essential traceability in regulated markets.
Industrial Minerals & Specialty Products: For manufacturers of specialty products like roofing granules, even slight discrepancies can lead to significant material loss or customer disputes.
Get a Quote for Thayer Scale’s Model 4NAR-6/8 NTEP Certified
Core Technologies
FMSS™: Force Measurement Suspension System
Our patented FMSS™ technology is able to discriminate between net load measurement forces and all other undesirable extraneous forces, making load cells virtually immune to the detrimental effects of vibration.
Rocking Flexure Suspension
Our patented RF Flexure suspension system provides permanent axis stability with near-zero hysteresis and immunity to lateral force interference.
Secondary Lever System
Our secondary lever system mechanically counterbalances tare loads up to 200x net load, reduces idler deflection, and self-aligns under structural distortion.
Approach-Retreat Weigh Bridge Configuration
Unlike conventional single-idler belt scales, multi-idler configurations (four-, six-, or eight-idler), our approach-retreat design enables true commercial-grade accuracy.
Series 5200: NTEP Certified Belt Scale Integrator
Provides reliable material flow data, statistics, and transfer functions as part of a certified weighing system.
Real-Time Flow Monitoring with AUDiTOR™
Pairs with AUDiTOR™ for precise flow rate tracking and recording in compliance with NIST Handbook 44.
WeighPoint®: Dual-Processor Integrator with Touchscreen HMI
A rugged, high-performance solution built for continuous use in harsh industrial environments.
Deep Algorithm Library
Get access to Thayer Scale’s powerful proprietary weighing algorithms for optimal scale performance.
Key Benefits
of Thayer Scale’s Model 4NAR-6/8 NTEP Certified Conveyor Belt Scale
🎯 Legally Verifiable
Measures material flows with consistent, verifiable accuracy for commercial transactions.
💰 ROI-Driven Performance with Rapid Payback
Consider the cost of overfilling rail cars or trucks by 2-3% due to poor belt scale accuracy. Add in the potential for customer disputes, regulatory fines and rework, and the ROI and financial payback of investing in NTEP conveyor belt scale is clear. In many cases, ROI can be achieved in as little as six months.
🎚️ Industry-Leading Accuracy
Powered by our FMSS™ technology, our mass-counterbalanced NTEP-certified conveyor belt scales deliver industry-leading ±0.125% accuracy in real-world conditions.
🧱 Built to Survive
Our secondary lever and RF flexure design resist shocks, lateral forces, and overloads >1,000 lbs without compromising accuracy.
🌀 Precision Belt Speed Sensing
A precision speed sensing wheel resists material buildup and delivers reliable speed signals—critical for accurate totalization.
⚖️ A Winning Combination
Thayer Scale’s RF belt scales with FMSS mass counterbalanced technology ensures better than 80% load cell utilization.
Secondary Lever System
