Smaller sensors expand torque applications
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Sensor Technology product story
Edited by the Engineeringtalk editorial team
Aug 5, 2008
The latest additions to the Torqsense range feature a two-piece design, so that the compact head can be fitted into even the smallest of spaces.
New from Sensor Technology, Torqsense RWT330/340 series sensors are designed for use in applications where space is limited.
Like other units in the Torqsense family, the RWT330/340 provides noncontact measurement of torque, speed, power and position of rotating shafts, such as machine drives, drive shafts for pumps, fans, mixers etc, and in the critical axes of test rigs.
As more and more applications are found for TorqSense, a number of popular requests have been noted, as Tony Ingham explains: "At its launch Torqsense was nothing short of revolutionary, since when it has steadily grown in popularity with enquiries constantly coming in from new fields".
"Last year, in response to requests, we showed at M-Tec our expanded range up to 10,000Nm since Torqsense can be applied to virtually any size of system where precise yet simple torque monitoring is required".
"We also get requests to fit Torqsense into very small spaces, so now the design team has come up with a solution by separating the sensing head from the control electronics to form a two-part unit".
"The head is very compact so can be fitted into the tiniest of spaces, while the electronics can be sited at a convenient place further from the shaft under test".
TorqSense uses tiny piezoceramic combs fixed to the transducer's shaft that distort in proportion to the instantaneous torque level.
These create data signals that are transmitted via a noncontact radio frequency coupling rather than by conventional but clumsy slip rings, or high inertia rotary transformers.
Because piezo technology requires so little power, this is also supplied via the RF coupling.
The data signal is transmitted to the control unit, from which it can be read on an alphanumeric display or transferred to a PC for storage and analysis using the Torqview software program.
"Our larger sensors are used in many applications at the heavy duty end of industry, our smaller ones are used in applications such as fine chemical dosing and lab-based research", says Ingham.
"At both ends of this spectrum are applications where splitting the sensing head from the control electronics is desirable".
"It maybe a space constraint or it may be a matter of protecting the electronics from harsh environmental conditions such as heat, damp, noise, vibration or EMC".
"What Torqsense is about is reliably collecting high speed real-time torque data".
"With that captured and secure, Torqview can display it via on-screen virtual instruments so users can perform a full range of analysis".
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Contact Sensor Technology
Tel +44 1869 238400
Other Sensor Technology stories
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Torqsense RWT330/340 to be unveiled at M-Tec
Sensor Technology is to unveil the Torqsense RWT330/340 series of non-contact measurement sensors for space-critical applications at M-Tec 2009. -
ST offers RWT310/320 and RWT330/340 torque sensors
Sensor Technology's digital RWT310/320 torque sensors with integrated electronics and RWT330/340 torque sensors with separate electronics include the latest Torqsense (SAW) technology. -
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Torqsense helps development of dry bulk handling
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