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RTN

RTN ring torsion load cells are low in height, extremely precise, and now even more robust

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RTN

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Ring Torsion Load Cells: Precise Weighing up to 470 Tons

RTN ring torsion load cells are available for a wide range of maximum capacities (1 t—470 t). All versions are compact and, at the same time, extremely robust. These properties and their superior degree of protection (up to IP 68/IP 69K) make them ideal for a wide range of container weighing applications, use in large platform scales, and the construction of vehicle scales – even in unfavorable environmental conditions.

HBM’s RTN load cells are extremely precise and minimize the influence of lateral load application with their unique ring-shaped strain gauges. Their high input resistance and low power consumption enable the use of battery-powered evaluation units for taking measurements.

Numerous special versions such as IECEx-ATEX or temperature-resistant versions (up to 110 °C) are available, and different cable lengths and cable types can be configured. A new version with an M12 connector is also available as an option for variants with accuracy class 0.05.

  • Maximum capacities: 0…1 t to 0…470 t
  • HBM accuracy class: up to C3
  • Degree of protection: IP 68 (optional: IP68/IP 69K)

High measurement accuracy

  • High precision and high signal-to-noise ratio, due to the 2.85 mV/V output signal
  • Excellent compensation of transverse loads,due to the special design and use of ring-shaped strain gauges
  • High input resistance (> 4,350 ohms) ensures low current consumption
  • Legal-for-trade weighing system of up to 3,000 d (OIML R60)

High precision – due to outstanding technical properties

High robustness

  • Corrosion-resistant load cell made of stainless steel
  • Resistant to chemicals and moisture
  • Wide temperature range from -30 °C to +80 °C (optionally up to +110 °C)
  • Explosion-proof versions available (e.g. IECEx-AI 1/21)
  • Also available with braided cable

Ideal for harsh environments – due to stainless-steel design, high degree of protection, and explosion protection.

Easy integration

  • Compact design, very low in height
  • Optimized for parallel connection including off-center load compensation
  • 14 maximum capacities, available in 3 sizes
  • Various cable lengths available.
  • Available with connector (M12, not for legal-for-trade applications)
  • Also available as a complete RTN/M weighing module, for easy mechanical integration

Flexible use in many applications – due to various product variants and accessories.

File

Description

Type

Languages

Size

Lightning protection for vehicle scales with RTN load cells - Installation instruction (A04280)

Lightning protection for vehicle scales with RTN load cells - Installation instruction

Technical Document English 128 KB
RTN - Data Sheet (B00990)

RTN - Data Sheet

Technical Document English 155 KB
RTN - Mounting instructions (A01153)

RTN - Mounting Instructions

Technical Document English, French, German 535 KB
RTN - Technical Drawing Pendulum mount VPN 1 t -100 t (B04957)

RTN - Data Sheets

Technical Document English, German 71 KB
RTN - Technical Drawing Pendulum mount VPN 150 t - 470 t (B04956)

RTN - Data Sheets

Technical Document English, German 57 KB
RTN - Technical Drawing Elastomer mount VEN 1 t - 100 t (B04958)

RTN - Data Sheets

Technical Document English, German 72 KB
RTN - Technical Drawing Elastomer mount 150 t -470 t (B04955)

RTN - Data Sheets

Technical Document English, German 62 KB
ATEX / IECEx Zone 1/21 – Ex i - Safety Instructions (A04029)

C2, C2A - Safety Instructions

Technical Document English, Italian, French, Portuguese, German, Spanish 32 MB
RTN - EU Declaration of Conformity (ce238)

RTN - EU Declaration of Conformity

Certificate English 606 KB
FM-Certificate of conformity – FM 18 CA 0144 X (C05723)

FM-Certificate of conformity – FM 18 CA 0144 X

Certificate English 608 KB
FM-Certificate of conformity – FM 18 US 0176 X (C05724)

FM-Certificate of conformity – FM 18 US 0176 X

Certificate English 858 KB
NEPSI Certificate (C06120)

NEPSI Certificate

Certificate English, Chinese 1 MB
RTN
Type Compression, Ring torsion
Application Silo/Tank weighing
Capacity group >100t, 1t ... 10t, 10t ... 100t, 100kg ... 1t
Maximum capacity (metric) 150 t, 220 t, 10 t, 15 t, 100 t, 2.2 t, 22 t, 1 t, 33 t, 470 t, 330 t, 4.7 t, 47 t, 68 t
Maximum capacity (imperial) 330600 lb, 484880 lb, 22040 lb, 33060 lb, 220400 lb, 4848 lb, 8 lb, 48488 lb, 2204 lb, 72732 lb, 1035880 lb, 727320 lb, 10358 lb, 103588 lb, 149872 lb
Maximum capacity (base unit in kg) 150000 kg, 220000 kg, 10000 kg, 15000 kg, 100000 kg, 2200 kg, 22000 kg, 1000 kg, 33000 kg, 470000 kg, 330000 kg, 4700 kg, 47000 kg, 68000 kg
Accuracy class 0.05, C3
Degree of protection IP68, optional IP69
Material Stainless steel with protective coating
Maximum platform size n/a
Output signal Passive (mV/V)
Special feature None
Minimum verification interval (Vmin) 7500 g, 5000 g, 500 g, 50 g, 11000 g, 750 g, 110 g, 16500 g, 235 g, 1100 g, 1650 g, 23500 g, 2350 g, 3400 g
Certification OIML