- Case Studies
- Smart Sensors
Posted On: December 5, 2007
Please note that our 420 Series of Torque sensors are now replaced by an enhanced 425 Series. The Series 425 torque sensors combine higher accuracy and improved performance, making them a go-to solution on the torque measurement market.
The 420 Series torque transducers operate with no direct contact from the rotor to the stator; they are more efficient, cost-effective and have an improved longevity than previous models in the marketplace.
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 reaction and dynamic torque sensors 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.
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 of a torque measuring environment.
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.
The FF420 is our Flange/Flange rotary torque transducer. The transducer element 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.
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.
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 torque sensor 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.
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.
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
Enquiries: Email: firstname.lastname@example.org
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!