LineScale-3i Load-Cell
- The LineScale 3i is a versatile dynamometric load cell that combines strength, intelligence, and ultra-speed, designed specifically for demanding applications in rope rescue, rope access, and technical rigging. Made from solid aluminum...
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Product Description
The LineScale 3i is a versatile dynamometric load cell that combines strength, intelligence, and ultra-speed, designed specifically for demanding applications in rope rescue, rope access, and technical rigging. Made from solid aluminum, with a minimum breaking strength (MBS) of 90 kN and certified as PPE, it excels as a single main anchor point in critical operations such as drop tests or twin tension rope systems. Its clear digital display and Bluetooth connectivity provide instant field feedback.
Engineered for performance and precision, the LineScale 3i samples up to 1280 times per second, capturing peak loads with unmatched accuracy, even during dynamic events. Its built-in memory stores over 200 million data points and supports up to 50 hours of continuous operation. Post-operation data transfer via USB is fast and intuitive, simplifying analysis. With long battery life, waterproof rating, and a free companion app, the LineScale 3i ensures full readiness for any task, whether monitoring anchor forces or evaluating system performance under real-world loads.
Key Features
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Strong: CNC-milled from solid aluminum with 90 kN MBS and PPE certification – excellent as a single main anchor in rigging scenarios including drop tests and TTRS systems.
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Smart: Records up to 50 hours of data and stores 230 million points for easy extraction and analysis. Remote monitoring and logging via Bluetooth and free app.
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Fast: Speed is crucial for dynamic events. The LineScale 3i records accurate data at 1280 samples per second – ensuring no peak load is missed.
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Fully Equipped: Delivered with a complete accessory kit for easy transport and deployment, including padded case, screen protectors, and USB connectors.
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Durable Construction: Built from high-strength aerospace aluminum alloy LY12CZ.
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Waterproof: Rated IP68-0.1 (waterproof to 0.1 m for 1 hour).
Technical Specifications
| Feature | Value |
|---|---|
| Minimum Breaking Strength (MBS) | 90 kN (20,232 lbf) |
| Working Load Limit (WLL) | 30 kN (6,744 lbf) |
| Sampling Rate (device/USB) | Fast: 1280 Hz; Slow: 640 Hz |
| Sampling Rate (Bluetooth) | Fast: 40 Hz; Slow: 10 Hz |
| Measurement Accuracy | +/-0.75%; +/-0.5% at 3–15 kN |
| Display Units | kgf / lbf / kN (digit height: 2 cm) |
| Memory Capacity | 50 hrs of logs; 230 million data points |
| Battery Life | 50+ hrs (power save); 20 hrs (Bluetooth) |
| Battery Type | 3.7V 1600 mAh Li-Po |
| Operating Temperature | 0–40°C (tested -10 to 50°C) |
| Protection Rating | IP68-0.1 (waterproof 0.1 m/1 hr) |
| Body Material | High-strength aerospace aluminum LY12CZ |
| Dimensions (L x W x H) | 19 x 9 x 2 cm (7.5 x 3.5 x 0.8 in) |
| Load Eyes | 5.8 x 3.7 cm (D-shape, R28) |
| Weight | 530 g (1.17 lb) |
Package Contents (Comes Fully Equipped)
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LineScale 3i load cell
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Durable padded hard case
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Rubber edge and screen protectors
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Anti-glare screen protector
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Dual-USB 4 GB flash drive
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7 cm Micro-USB cable
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USB key for firmware updates
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Quick-start guide & user manual
Certifications
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CE PPE (certified according to EU Regulation 2016/425)
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Recommended for use according to PPE-R/11.114 V3:2021 (issued by VG11 – Fall Protection)
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UIAA 130 V1:2021 (safety label for load-sharing devices)
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Certificates available for download at LineGrip.
Field Review
"The LineScale 3i is a huge improvement to my gear, my system testing setups, and my teaching toolkit. It has tons of features and settings that were never available at this price point before. Some of my favorite aspects are the large, multi-directional load eyes that accommodate varied rigging, the internal data storage, reliable Bluetooth (and excellent app!), and the high resolution and range. I’ve been abusing my LineScale for 3 years and it’s holding up great."
– Justin Wheaton, Instructor, CMC School
Additional Resources
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Knowledge Base: LineScale 3 Knowledge Base
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Mobile App (iOS & Android): Download Here
































