Angle sensor technology provides accuracy boost
A
Variohm Eurosensor product story
Edited by the Engineeringtalk editorial team
May 26, 2008
Thin film deposits of sandwiched magnetic and nonmagnetic layers can be combined with sensors on 'spiral arms' to return an absolute position value over a single rotation.
Variohm EuroSensor has released noncontact multiturn angle sensors that offer improved resolution, better repeatability and longer life than contact-based potentiometer devices, with significantly lower costs than absolute optical encoders.
The RSM 2800 from Novotechnik is a 28mm diameter sensor providing a 12bit absolute position resolution over a selectable range of up to 15 turns (5400).
With a choice of voltage or current output as standard, a digital version with 0.1 resolution is also available.
The RSM 2800 uses the GMR effect (giant magneto resistance), a technology used in hard disk drives, where thin film deposits of sandwiched magnetic and nonmagnetic layers can be combined with sensors on 'spiral arms' to return an absolute position value over a single rotation.
To provide an absolute position value over a multiturn range, a 360 Hall Effect sensor is included with multiple spiral arms that correspond to each rotation.
The position is available with true power-on sensing for first time operation on start up, with no calibration required.
Peter Grundberg and Albert Fert were awarded the Nobel Prize for Physics in 2007 for their discovery of the GMR Effect almost twenty years earlier and for subsequent major work on all aspects of the technology.
The robust and durable RSM2800 has a rated temperature range of -40 to +85C (+125C on request) and features a thermally stable plastic housing and a stainless steel input shaft with a choice of an indexing flat or push-on coupling.
Supply voltage is 24 and 5V DC.
The contact-free technology used in the RSM2800 suits long-life applications for steering angle detection in cars and trucks or mobile machinery, for valve and flap positioning in industrial processing and as a low-cost absolute feedback system for servo controls.
The sensor can also be combined with the winding drum of a cable extension transducer to provide an extremely compact solution for long-travel linear position measurement.
Not what you're looking for? Search the site.
Contact Variohm Eurosensor
Tel +44 1327 351004
Other Variohm Eurosensor stories
-
Variohm unveils membrane potentiometer range
Variohm Eurosensor has introduced the Spectra Symbol Membrane potentiometer range. -
Rotary position sensor suits harsh environments
Variohm Eurosensor has launched a rotary position sensor for price-sensitive industrial and automotive applications in harsh and extended-temperature-range environments. -
Non-contact angle sensors open up new applications
Whether for axial offsets, excessive torque or the need for transmissive measurements, conventional angle sensors - despite a refined state of development - are not suitable for all applications. -
Lion Alcolmeter 500 measures breath alcohol levels
The Lion Alcolmeter 500, available from Variohm Eurosensor, is a breath alcohol measuring instrument designed for field use by public services and other authorities for fast subject screening. -
GUI software programs Vert-X angle sensors
Variohm Eurosensor has launched a software application for communication and programming of Contelec Vert-X series contactless and non-contact angle sensors.
Browse by category
-
Capital Equipment (3,523)
- Capital Equipment (1)
- Compressors and Air Treatment (540)
- Electrical hardware (131)
- Electronics Manufacturing, Tools, Instruments (192)
- Machinery and Production Equipment (1,133)
- Manufacturing Machinery and Plant Equipment (477)
- Production line blowers and fans (74)
- Robotics, Handling and Storage (975)
- Consultancy and Services (924)
-
Control and Instrumentation (5,128)
- Cabling, Conduit, Signal Conditioning (817)
- CNC and Motion Controllers (190)
- Control and Instrumentation (3)
- HMIs/Operator Interfaces (296)
- Logic Controllers, Timers and Relays (96)
- Mid-range and Large PLCs (203)
- Plant- and Machine-Wide Communications (1,203)
- Plantwide control (1,353)
- Power Supplies, Uninterruptible Power (575)
- Smaller-Sized PLCs (392)
-
Drives, Motors and Controls (3,438)
- Drives, Motors and Controls (2)
- Industrial Drives/Controls (1,290)
- Industrial Motors (502)
- Linear Drives and Motors (121)
- Precision Motors and Gears (430)
- Stepper and Servo Drives, Motors, Controls (1,091)
-
Electrical and Electronic Equipment Design (4,307)
- Batteries, chargers and circuit protection (583)
- Connectors, Terminals, Busbars, Slip Rings (717)
- Electrical and Electronic Components (649)
- Electrical and Electronic Equipment Design (3)
- Electrical and Electronic Subassemblies (375)
- Enclosures and Equipment Cooling Fans (722)
- Knobs, Handles and Enclosure Hardware (430)
- PCs and Embedded Systems (828)
-
Engineering Design Software (6,369)
- 2D CAD software (203)
- 3D CAD software (1,194)
- CAM, CNC, production management software (583)
- Data, document management software (322)
- Electrical design software (167)
- Engineering Design Software (17)
- FEA and structural analysis software (377)
- File conversion software, data capture (358)
- Fluid, thermal, noise, vibration software (339)
- Materials design and moulding design software (152)
- Maths, charting, statistics, QA software (325)
- PLM and collaboration software (664)
- Process, instrumentation, automation software (269)
- Publishing and documentation software (234)
- Rendering, visualisation, styling software (207)
- Simulation, modelling, validation software (958)
-
Engineering Industry News, Resources (6,212)
- Electronic Resources for Engineers (278)
- Engineering Business News, Views (388)
- Engineering Conferences (438)
- Engineering Education, Resources, Standards (850)
- Engineering Exhibitions, Events (577)
- Engineering Guides, Newsletters (366)
- Engineering Industry Developments, Awards (636)
- Engineering Industry News, Resources (4)
- Engineering Industry Reports, Surveys (597)
- Engineering Recruitment, Employment (219)
- Engineering Seminars (418)
- Engineering Training Courses (458)
- Health and Safety Consultancy, Software (180)
- Health and Safety Events, Training, News (285)
- Health and Safety Legislation (403)
- Health and Safety Strategy, Risk Assessment (115)
- Machine Building (4,622)
-
Materials and Processing (3,035)
- Materials and components (2,267)
- Materials and Processing (5)
- Materials processing and testing (292)
- Rapid Prototyping (471)
-
Monitoring, Measurement and Quality (5,655)
- Data Acquisition Hardware and PC I/O Boards (490)
- Data acquisition Software and Communications (505)
- Data loggers (427)
- Electrical and Electronic Testing, PAT Equipment (643)
- Form/co-ordinate, optical, vision instruments (762)
- Gauges, Indicators and Instruments (449)
- Materials testing equipment (431)
- Monitoring, Measurement and Quality (1)
- Telecomms/network test equipment, software etc (158)
- Testing and Calibration Services and Information (520)
- Testing, analysing and monitoring equipment (1,269)
-
Powertrain Design (3,713)
- Bearings (984)
- Chains and belts (333)
- Gears, brakes, couplings and engines (1,476)
- Hydraulic Components (475)
- Lubricants (441)
- Powertrain Design (3)
-
Sensors (7,289)
- Accelerometers and Vibration Sensors (449)
- Barcode Sensors (103)
- Flowmeters and Flow Sensors (644)
- Gas, Chemical, Radiation, Magnetic Sensors (290)
- Humidity and Environmental Sensors (158)
- Level Sensors and Leak Detectors (538)
- Linear Position Sensors (415)
- Loadcells, Force Sensors, Torque Sensors (730)
- Pressure sensors (640)
- Proximity Sensors (715)
- Rotary Position, Tilt and Angular Sensors (563)
- Sensors (11)
- Temperature sensors (622)
- Vision and Colour Sensors (1,411)
- Small Mechanical Components, Joining, Tools (2,047)
- Valves, Pumps, Process Hardware (3,726)
