News



05 December 07

Torque Transducers

Torque Transducers from Datum Electronics

Rotary Torque Transducers Series 420, latest non-contact technology  from Datum Electronics.

The 420 Series torque transducers operate with no direct contact from the rotor to the stator; they are more efficient, cost effective and have improved longevity than previous models in the marketplace.

Accurate & Dependable Torque Measurement

These torque measuring systems are available either as complete torque transducers or as separate rotor & stator assemblies ideal for high speed test rig and OEM applications. They provide a system accuracy of 0.1% of full scale either into a PC or laptop via USB, independent control system or a rack-mounted Torque Indicator.

All Datum Electronics torque transducers have a strain gauged central element and a set of rotating conditioning electronics, the digital signals from this are digitally transmitted to the non-rotating body or stator of the system. The Series 420 has three different types of torque transducer, each with their own distinctions in terms of functionality and for use within different environments.

m420-slip-ring-replacement-transducers-1024x561

M420 Troque Transducers

M420 Torque Transducers

The M420 is our standard rotary torque transducer. The standard transducer has the rotary shaft and a stator built into its static housing. The housing is mounted on the shaft with bearings. The M420 series is available in 4 standard sizes to meet the needs within a torque measuring environment.

TRANSDUCER SIZE & DEFINITION
  • Size 1     0-100Nm
  • Size 2     0-500Nm
  • Size 3     0-2,000Nm
  • Size 4     0-10,000Nm

The M420 is highly accurate, with a combined error of 0.1% as standard on all M420 Torque Transducer sizes. They provide a digital data signal (USB) which can measure torque, Speed and Power. They are suitable for use on test rig applications and permanent installations.

ff420-400nm-flanged-torque-transducer

FF420 Torque Transducer

FF420 Torque Transducers

The FF420 is our Flange/Flange rotary torque transducer. The transducer element in this case is a flange-flange coupling with the strain gauges and the rotor electronics mounted in the centre section of the coupling. The signal is transmitted across a digital transmission coupling link to the stator that is mounted around the centre of the coupling.

The rotating element of the transducer is not limited by bearings; therefore it can be used at higher speeds, and places no bearing loads on to the shaft. The stator needs to be mounted in relation to the shaft within an operating envelope of +/- 3 to 5mm. We have standardised our range of torque transducers for clear and simple applications and specifications.

TRANSDUCER SIZE & DEFINITION
  • Size 1     0-250Nm
  • Size 2     0-500Nm
  • Size 3     0-2,000Nm
  • Size 4     0-10,000Nm

The FF420 torque transducer is highly accurate with a combined error of 0.1%. It uses a true ‘non-contact’ transmission signal. Another advantage of the FF420 is that is tolerable to misalignment, because of the way the transducer is engineered. The standard ranges are compatible with DIN Size flanges.

rs-420-rotary-torque-transducer-torque-sensor

RS 420 Torque Transducer

 

RS420 Torque Transducers

The RS420 is our Rotor/Stator Transducer with a keyed shaft and a Free Standing Stator. This type of transducer is very similar to the FF420 but has keyed or splined shafts as opposed to flanges.

The transducer element in this case is a keyway or splined shaft with the strain gauges and the rotor electronics mounted either on the shaft, or inside the shaft depending upon shaft size and feasibility. The signal is transmitted across an inductive link to the stator that is mounted around the centre of the coupling, with a visible air gap. This type of torque transducer has no bearings, and there is no secondary load on the test shaft which allows for multiple shaft sizes.

Because the torque transducer has no bearings, it can be used at higher speeds, running much faster and longer than traditional transducers containing bearings. The stator needs to be mounted in relation to the shaft within an operating envelope of +/- 3 to 5 mm. We have standardised our range of torque transducers for clear and simple applications and specifications.

Transducer Size & Definition

  • Size 1     0-100Nm
  • Size 2     0-500Nm
  • Size 3     0-2,000Nm
  • Size 4     0-10,000Nm

The RS420 is highly accurate with a combined error of 0.1%. It uses a true ‘non-contact’ transmission signal. Another advantage of the RS420 is that is tolerable to misalignment, because of the way the transducer is engineered.

SERIES 420 TORQUE TRANSDUCER FEATURES
  • Among the enhanced features are the additional options for:
  • Direct Digital Data (USB)
  • Direct Analogue Output
  • Direct Serial Outputs (RS232)
  • Increased Sampling Rates (100, 1,000, 5,000, 10,000, 20,000sps)
  • Analysis Tools for enhanced data analysis
KEY SYSTEM & FEATURES OF THE SERIES 420 ROTARY TORQUE TRANSDUCERS
  • Accurate On Shaft Torque Measurement
  • Non-contact Power and Signal Transmission
  • Proven Technology
  • Low Maintenance
  • Simple Linear Calibration
  • Engineered to fit most drive components
  • 0-25,000rpm
  • No restriction on shaft size
  • Rotary and Static Torque Measurement
  • Self-Test Facility
  • Output Options (Direct USB or RS232 output)
  • TorqueLog Software
  • 4-20mA or 0-10Vdc
  • CAN Bus
  • Specialist Data Analysis
  • AC Coupled Data
  • Fast Burst Mode Data to 30,000sps
  • Standard Data Output to 5kHz
  • Event Linked Outputs
  • Competitive Pricing
  • Standard Transducer Range
  • Fast Turn Round on Non-standard Shafts and Couplings
  • OEM Production Solutions

The new range is complemented by Datum’s ability to engineer special torque solutions with Transducers, Indicators and Software tailor made to meet customer requirements.


To get in touch with our team, use our contact form or contact us on:

Telephone: +44 (0) 1983 28 28 34
Fax: +44 (0) 1983 28 28 35

Commerical Enquiries: Email: web@datum-electronics.co.uk

We also have a network of partners, distributors and re-sellers
around the globe able to assist you locally in certain areas,

View our Where to Buy page

We look forward to hearing from you!