TorqSense RWT410/420 Series Torque Transsducer with Integral Electronics

Product catalog summary

Overview: The RWT410/420 Series Torque Transducers by Sensor Technology Ltd are designed for precise torque measurement using Strain Dependent Surface Acoustic Wave Resonators. They offer various torque ranges and configurations for different applications.

Specifications: These transducers measure torque from 0 to 13000 Nm with shaft sizes from 6 mm to 75 mm. They include a rotational speed measurement system with an opto switch, providing pulse output signals. Maximum rotational speed varies by model, up to 30,000 RPM.

Accuracy and Processing: The transducers have a combined non-linearity and hysteresis of ±0.25% FS, a resolution of 0.02% FS, and repeatability of 0.1% FS. Digital averaging can be configured, with a default setting of N=16, and a 3dB bandwidth from 39 Hz to 2500 Hz depending on the setting.

Output Options: Analog outputs include ±1V, ±5V, or ±10V, and current outputs of 4-20 mA, 0-20 mA, or 12±8 mA. Digital outputs are available via CAN Bus, RS232, and USB.

Environmental and Mechanical Properties: Operating temperature ranges from -10°C to +50°C, with a storage range of -20°C to +70°C. They can withstand a static safe load breaking of 300% of the rated torque and have a maximum measurable load limit of 120% of the rated torque.

Optional Features: Options include various shaft end configurations, output options, and digital configurations. High-speed bearings and IP65 ingress protection are available for specific applications.

Additional Products: Related products include the ETD Display readout, AC Mains Adapter Power Supply, Transducer Signal Breakout Unit, and TorqView Torque Monitoring Software.

Ordering Information: Specify the rated torque, options, and additional products when ordering. Customization is available to meet specific application needs.

Accuracy: The accuracy is influenced by linearity, hysteresis, temperature drifts, and other parameters. Overall measurement error or uncertainty can be calculated if these errors are known.

Digital Averaging: Digital averaging minimizes electronic white noise, enhancing accuracy but reducing frequency response. Optimization is required to balance accuracy and frequency response.

Additional Information: Data parameters are measured at +20°C. Specifications and dimensions may change without notice.

Catalog excerpts

TorqSense RWT410/420 Series Torque Transsducer with Integral Electronics-3

RWT410/420 Series Torque Transducers - Data Specification Parameter RWT410/420 Torque measurement system Measurement method Strain Dependent Surface Acoustic Wave Resonators (interrogated by an incremental electronic scanning method) (See Notes 1 & 0–1 0 – 1.1 0 – 21 0 – 101 0 - 501 0 – 2001 Nm Torque range 2 below) to 0 - 20 to 0 - 100 to 0 - 500 to 0 - 2000 to 0 - 13000 Shaft size (diameter) 6 12 20 30 50 75 mm Rotation speed/angle of rotation measurement system Measurement method Opto switch through slotted disc Direct output signal Pulse output direct from opto switch (TTL, 5V square wave),...

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TorqSense RWT410/420 Series Torque Transsducer with Integral Electronics-4

RWT410/420 Series Torque Transducers Dimensions (1Nm to 100Nm) 145.00 (Option P, plain shaft 180.00) 120.00 (Option P, plain shaft 144.00 ) Measurement units: Millimetres (mm) Mechanical Properties Torque (Max) 1 Shaft Code CF Shaft Size 6 (Diameter) Torsional 0.23 Stiffness Mass moment of 0.45 inertia, LV Max measurable load limit Static safe load breaking Shaft weight, 0.03 approx 0.7 Transducer with shaft weight, approx Data parameters measured at +20°C Sensor Technology Ltd reserves the right to change specification and dimensions without notice. © Sensor Technology Ltd 2019

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TorqSense RWT410/420 Series Torque Transsducer with Integral Electronics-5

RWT410/420 Series Torque Transducers Dimensions (101Nm to 500Nm) 137.00 190.00 (Option P, plain shaft 230.00) Measurement units: Millimetres (mm) Mechanical Properties Torque (Max) Shaft Code Shaft Size (Diameter) Torsional stiffness Mass moment of inertia Max measurable load limit Static safe load breaking Shaft weight, approx Transducer with shaft weight, approx Data parameters measured at +20°C Sensor Technology Ltd reserves the right to change specification and dimensions without notice.

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TorqSense RWT410/420 Series Torque Transsducer with Integral Electronics-6

RWT410/420 Series Torque Transducers Dimensions (501Nm to 13000Nm) 12.00 250.00 (Option P, plain shaft 270.00) Measurement units: Millimetres (mm) Parameter Mechanical Properties Torque (Max) 650 Shaft Code GE Shaft Size (Diameter) Torsional TBC Stiffness Mass moment of TBC inertia Max measurable load limit Static safe load breaking Shaft weight, TBC approx TBC Transducer with shaft weight, approx Data parameters measured at +20°C Sensor Technology Ltd reserves the right to change specification and dimensions without notice.

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TorqSense RWT410/420 Series Torque Transsducer with Integral Electronics-7

RWT410/420 Series Torque Transducers - Standard Range ● – Standard feature ◊ – Optional feature Torque, Speed, Power Outputs Torque only Torque & Speed (60 pulses/rev) Torque & Speed (360 pulses/rev) Torque & Power (60 pulses/rev) Torque & Speed (60 pulses/rev) or Power Torque & Speed (360 pulses/rev) or Power Standard features Keyed Shaft Ends Voltage output ±5v FSD (Fixed) Voltage outputs from ±1v to ±10v FSD and unipolar (Variable) RS232 output Torque Averaging and Torque Peak Self Diagnostics Internal temperature measurement Option Code User to specify RPM/FSD when ordering Not yet available...

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TorqSense RWT410/420 Series Torque Transsducer with Integral Electronics-8

RWT410/420 Series Torque Transducers – Connector and Lead Options Connectors & Leads Analog Connector Option Code For connecting RWT to user’s system via 15 pin ‘D’ connector For connecting RWT to user’s system via 15 pin ‘D’ connector Analog Lead (Length 2.5m) Digital Lead (Length 2.5m) 12 Pin Lumberg (male) to 15 way ‘D’ type connector (male) Digital Lead Adapter (Length 1m) 15 Way ‘D’ type (female) to RS232 and Power Connectors Digital Lead Adapter (Length 1m) 15 Way ‘D’ type (female) to RS232, USB and Power Connectors Digital Lead Adapter (Length 1m) 15 Way ‘D’ type (female) to CANbus and...

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TorqSense RWT410/420 Series Torque Transsducer with Integral Electronics-9

When ordering a Torque Transducer please note that any torque/FSD is possible between ranges – please specify rated torque and options using the following format: For example: RWT A ‘basic’ transducer with torque and speed outputs, rated and calibrated to 15Nm FSD with keyed ends, ±10v and IP65 protection. Your transducer requirement: RWT Max speed (if applicable) Connector & Lead options Additional related products Glossary of terms and definitions used in this datasheet  Surface Acoustic Wave (SAW) - An acoustic wave travelling along the surface of a material having some Strain dependent SAW...

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