Load Cells (RTN Ring Torsion, SENSiQ® PWS - Issuu (2024)

RTN Ring Torsion Load Cells

■ Legal-for-trade design according to OIML (up to 5000 d and 7500 d for multi-interval scales) ■ High accuracy, even for very small application areas (for legal-for-trade applications up to at least 15 %) ■ Large output signal and this high-resolution useful signal range ■ Because of the low power consumption, multi-scale systems can also be realized with simple control electronics ■ Use in hazardous zone with protection class Ex ia IIC T4 Gb / Ex ia IIIC T125 °C

Db or protection class Ex nA IIC T4 Gc /

Ex tb IIIC T125 °C Db ■ Protection class IP68

Application

The load cell as transducer converts the mechanical input variable force proportionally into the electrical output variable voltage.

The consistent optimization of the ring torsion load cell offers the user specific advantages:

The extremely small frame size simplifies the use in almost all weighing device applications

The robust construction allows problem-free transport, installation and operation, also under very rough ambient conditions (disturbance forces, temperature)

Construction

Hermetically sealed encapsulation through laser welding (IP68)

High corrosion protection through electrolytically polished stainless steel

All electrical components are located inside the load cell and thus are optimally protected The high quality and robust connecting cable is guided radially into the load cell In connection with adapter kits the RTN load cells are compatible previous designs

Function

High measuring sensitivity

High reproducibility

High long-term stability and therefore consistently high accuracy permanently

Extremely small measured value influence as a result of lateral forces

High functional safety, even with frequently unavoidable impact loads and constraining forces, as well as with electrical interferences

Integrated overvoltage protection

Torque-free force input/output as a result of the direct, vertical power train

RTN Ring Torsion Load Cells

Variants

Design

RTN 1 t RTN 2.2 t RTN 4.7 t RTN 10 t RTN 15 t RTN 22 t RTN 33 t RTN 47 t RTN 68 t RTN 100 t RTN 150 t RTN 220 t RTN 330 t RTN 470 t

0.05

Accuracy class

C3

C5 / C4 MI 7.5

D726173.04 D726173.02 D726173.10 D726174.04 D726174.02 D726174.10 D726175.04 D726175.02 D726175.10 D726176.04 D726176.02 D726176.10 D726177.04 D726177.02 D726177.10 D724781.04 D724781.02 D724781.10 D724754.04 D724754.02 D724754.10 D724782.04 D724782.02 D724782.10 D724783.04 D724783.02 D724783.10 D724784.04 D724784.02 D724784.10 D726178.04 D726178.02 D726179.04 D726179.02 D726180.04 D726180.02 D726181.04 D726181.02

Optional feature ATEX/IECEx approval

Intrinsically safe explosion-proof design according to ATEX category 2GD and IECEx EPL Gb, Db: Gas-Ex II 2G Ex ia IIC T4 Gb (Zone 1) Dust-Ex II 2D Ex ia IIIC T125 C Db, IP67 (Zone 21) Attention: The verification of intrinsically safe circuit must be verified. New barriers are provided in particular for new systems. Verifications of intrinsically safe circuit are available for all load cells and barriers.

0.05 2GD C3 2GD C5 / C4 MI 7.5 2GD

Model .82 Model .81 Model .83

Load cells marked as intrinsically safe - Ex “i” - are also operated intrinsically safely irrespective of the zone.

Not intrinsically safe explosion-proof design according to ATEX category 2D, 3G and IECEx EPL Db, Gc: Gas-Ex II 3G Ex nA IIC T4 Gc (Zone 2) Dust-Ex II 2D Ex tb IIIC T125 °C Db, IP67 (Zone 21)

Accuracy class 0.05 2D3G C3 2D3G C5 / C4 MI 7.5 2D3G

Model .86 Model .85 Model .87

SENSiQ® PWS

Platform load cell 10 ... 700 kg

■ Very low corner load error ■ Good cost-benefit ratio ■ Available in accuracies of 0.05% and legal-for-trade design ■ Option PWS Plus – Improved protection against increased humidity ■ ATEX and IECEx certification ■ Optimized by exact calibration for parallel circuits ■ Six-wire circuitry ■ 100% stainless steel

Application

SENSiQ PWS load cells convert proportionally the mechanical input variable force into the electrical variable voltage. They are ideal for use in platform scales, weighfeeders and bin weighers. The compact design facilitates planning into any given construction.

Construction

The PWS load cells are produced entirely from stainless steel. They are connected electrically by a high-quality, 6-wire screened PVC cable. The six-wire circuitry makes the measuring signal insensitive to differences in lengths of the connection cables.

Function

High calibration accuracy which provides ideal conditions for the parallel arrangement of load cells

High reproducibility of the measuring signals

Extremely low interference by transverse loads of the measured values

SENSiQ® PWS Platform Load Cell 10 ... 700 kg

Variants

Emax =

Nominal Load 10 kg 30 kg 60 kg 100 kg 150 kg 300 kg 500 kg 700 kg Accuracy Class Material No. A B C Tightening Torque Nominal Measured Displacement Design ATEX Category

D1 V058895.B01 8.5 M8 23.8 32 N m 0.30 mm Normal D1 V058895.B02 8.5 M8 30.7 32 N m 0.35 mm Normal D1 V058895.B03 8.5 M8 30.7 32 N m 0.35 mm Normal D1 V058895.B04 8.5 M8 30.7 32 N m 0.45 mm Normal D1 V058895.B05 8.5 M8 30.7 32 N m 0.45 mm Normal D1 V058895.B06 8.5 M8 30.7 32 N m 0.50 mm Normal D1 V058895.B07 10.4 M10 36.5 79 N m 0.50 mm Normal D1 V058895.B08 10.4 M10 36.5 79 N m 0.50 mm Normal

30 kg

60 kg

100 kg

PWS Plus 150 kg

300 kg

500 kg

700 kg

10 kg 30 kg 60 kg 100 kg 150 kg 300 kg

10 kg 30 kg 60 kg 100 kg 150 kg 300 kg 500 kg 700 kg

10 kg 30 kg 60 kg 100 kg 150 kg 300 kg 500 kg 700 kg D1 V741556.B02 8.5 M8 23.8 32 N m 0.30 mm Protection against increased humidity D1 V741556.B03 8.5 M8 23.8 32 N m 0.30 mm Protection against increased humidity D1 V741556.B04 8.5 M8 23.8 32 N m 0.30 mm Protection against increased humidity D1 V741556.B05 8.5 M8 23.8 32 N m 0.30 mm Protection against increased humidity D1 V741556.B06 8.5 M8 23.8 32 N m 0.30 mm Protection against increased humidity D1 V741556.B07 10.4 M10 36.5 79 N m 0.50 mm Protection against increased humidity D1 V741556.B08 10.4 M10 36.5 79 N m 0.50 mm Protection against increased humidity

C3 V058896.B01 8.5 M8 23.8 32 N m 0.30 mm Increased accuracy C3 V058896.B02 8.5 M8 30.7 32 N m 0.35 mm Increased accuracy C3 V058896.B03 8.5 M8 30.7 32 N m 0.35 mm Increased accuracy C3 V058896.B04 8.5 M8 30.7 32 N m 0.45 mm Increased accuracy C3 V058896.B05 8.5 M8 30.7 32 N m 0.45 mm Increased accuracy C3 V058896.B06 8.5 M8 30.7 32 N m 0.50 mm Increased accuracy

D1 V058895.B31 8.5 M8 23.8 32 N m 0.30 mm ATEX / IECEx 1D/2G D1 V058895.B32 8.5 M8 30.7 32 N m 0.35 mm ATEX / IECEx 1D/2G D1 V058895.B33 8.5 M8 30.7 32 N m 0.35 mm ATEX / IECEx 1D/2G D1 V058895.B34 8.5 M8 30.7 32 N m 0.45 mm ATEX / IECEx 1D/2G D1 V058895.B35 8.5 M8 30.7 39 N m 0.45 mm ATEX / IECEx 1D/2G D1 V058895.B36 8.5 M8 30.7 39 N m 0.50 mm ATEX / IECEx 1D/2G D1 V058895.B37 10.4 M10 36.5 79 N m 0.50 mm ATEX / IECEx 1D/2G D1 V058895.B38 10.4 M10 36.5 79 N m 0.50 mm ATEX / IECEx 1D/2G

D1 V058895.B41 8.5 M8 23.8 32 N m 0.30 mm ATEX / IECEx 3GD D1 V058895.B42 8.5 M8 30.7 32 N m 0.35 mm ATEX / IECEx 3GD D1 V058895.B43 8.5 M8 30.7 32 N m 0.35 mm ATEX / IECEx 3GD D1 V058895.B44 8.5 M8 30.7 32 N m 0.45 mm ATEX / IECEx 3GD D1 V058895.B45 8.5 M8 30.7 39 N m 0.45 mm ATEX / IECEx 3GD D1 V058895.B46 8.5 M8 30.7 39 N m 0.50 mm ATEX / IECEx 3GD D1 V058895.B47 10.4 M10 36.5 79 N m 0.50 mm ATEX / IECEx 3GD D1 V058895.B48 10.4 M10 36.5 79 N m 0.50 mm ATEX / IECEx 3GD