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wei RTNC3 33t 01
wei RTNC3 2,2t plus 1-KAB175-3-1 unplugged 01
wei RTNC3 100t 01
Rubber-metal bearing for RTN 100t
Pendulum bearing for RTN 100t, stainless
wei RTN-M2BR4.7T 002
wei RTN-M2 006
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RTN

The ring torsion load cells have a low hight, are robust and are extremly precise:

  • Offering a wide range of capacities from 1 t to 470 t
  • Ensuring precise results with 0.05, C3 and C5 accuracy classes
  • Available with fixed mounted cable and plug version
  • Optional EX version

NEW: RTN is now available with OIML C5 accuracy class.

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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 C5
  • 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 5,000 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.

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Lightning protection for vehicle scales with RTN load cells - Installation instruction Mounting Instructions English
RTN - Data Sheet Data Sheets English
RTN - Mounting Instructions Mounting Instructions English, French, German
RTN - Data Sheets Data Sheets English, German
RTN - Data Sheets Data Sheets English, German
RTN - Data Sheets Data Sheets English, German
RTN - Data Sheets Data Sheets English, German
C2, C2A - Safety Instructions Safety Instructions English, Italian, French, Portuguese, German, Spanish
RTN - Safety Instructions Safety Instructions English, Italian, French, Chinese, Korean, German, Spanish, Japanese
RTN - Quick Start Guide Quick Start Guide English, Italian, French, Chinese, German
ATEX / IECEx Zone 2/21 + Zone 2/22 - Safety Instructions Safety Instructions English, Italian, French, Portuguese, German, Spanish

Certificates and Approvals

FM-Certificate of conformity – FM 18 CA 0144 X Certificates English
FM-Certificate of conformity – FM 18 US 0176 X Certificates English
NEPSI Certificate English, Chinese
EU-Type Examination Certificate – BVS 13 ATEX E 108 X English
C16/ C2/ U2A/ C2A/ HLC/ PW15AH/ PW25/ PW27/ PW29/ PW4L/ RSC/ RTN/ Z6/ Z6R/ Z7/ Z16/ PW10/ PW12/ PW15/ PW16/ PW22/ PWS/ SP4 - EU Declaration of Conformity - EX IIG for zone 1 and Ex IID for zone 21 Declaration of Conformity English
C16/ C2/ U2A/ C2A/ HLC/ PW15AH/ PW25/ PW27/ PW29/ PW4L/ RSC/ RTN/ Z6/ Z6R/ Z7/ Z16/ PW10/ PW12/ PW15/ PW16/ PW22/ PWS/ SP4 - UK Declaration of Conformity - EX IIG for zone 1 and Ex IID for zone 21 English
C16/C2/U2A/C2A/HLC/PW15/PW25/PW27/PW29/RSC/RTN/Z6/Z6R/Z16 - EU Declaration of Conformity - EX IIG for zone 2 and Ex IID for zone 21 Declaration of Conformity English
C16/C2/U2A/C2A/HLC/PW15/PW25/PW27/PW29/RSC/RTN/Z6/Z6R/Z16 - UK Declaration of Conformity - EX IIG for zone 2 and Ex IID for zone 21 English
RTN - EU Declaration of Conformity Declaration of Conformity English
RTN - Test Certificate Certificates English, German
RTN - OIML Certificate Certificates English
RTN
Type Compression, Ring torsion
Application Silo/Tank weighing
Maximum capacity 10 t, 15 t, 100 t, 150 t, 2.2 t, 22 t, 1 t, 220 t, 33 t, 470 t, 330 t, 4.7 t, 47 t, 68 t
Maximum capacity 22040 lb, 33060 lb, 220400 lb, 330600 lb, 4848 lb, 8 lb, 48488 lb, 2204 lb, 484880 lb, 72732 lb, 1035880 lb, 727320 lb, 10358 lb, 103588 lb, 149872 lb
Accuracy class 0.05, C3, C5
Degree of protection IP68
Material Stainless steel with protective coating, Stainless steel, hermetically sealed
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, 0.5 kg, 0.75 kg, 1 kg, 1.65 kg, 2.35 kg, 3.4 kg
Certification OIML

List of accessories available for all variants of this family

Product Code Description
Cable coupling, M12, 8-pin, A-coded 1-CON-S3003 Cable coupling, M12, 8-pin, A-coded
Cable coupling, M12, 8-pin, angled 1-CON-S3004 Cable coupling, M12, 8-pin, angled
PAD - Digital transducer electronics (CANopen) 1-PAD4003A-CAN PAD - Digital transducer electronics (CANopen)
Pendulum bearing for RTN 15t, stainless 1-RTN/15T/VPN Pendulum bearing for RTN 15t, stainless
Pendulum bearing for RTN 100t, stainless 1-RTN/100T/VPN Pendulum bearing for RTN 100t, stainless
Pendulum bearing for RTN 68t, stainless 1-RTN/68T/VPN Pendulum bearing for RTN 68t, stainless
PAD - Digital transducer electronics (RS485) 1-PAD4002A-RS4 PAD - Digital transducer electronics (RS485)
ClipX Signal conditioner, Ind. Ethernet 1-BM40IE-S1 ClipX Signal conditioner, Ind. Ethernet
ClipX Signal conditioner 1-BM40 ClipX Signal conditioner
Basic device (Profibus/RS485) for AD103C 1-AED9301B Basic device (Profibus/RS485) for AD103C
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