Product category:
Measurement systems
News Release from: Renishaw | Subject: Encoder system
Edited by the Manufacturingtalk Editorial
Team on 12 October 2007
Encoder system performs as fine pitch
system
The Signum RSLM encoder system from Renishaw provides all of the benefits of a 20 um encoder with the performance of a fine pitch system.
With +/-30 nm cyclic error, patented filtering optics, resolution to 5 nm and simple installation, Renishaw's Signum RSLM encoder system provides all of the benefits of a 20 um encoder with the performance of a fine pitch system Renishaw's Signum range offers high speed, reliable, non-contact performance combined with advanced features including the IN-TRAC auto-phase optical reference mark and dynamic signal processing
This article was originally published on Manufacturingtalk on 7 Mar 2001 at 8.00am (UK)
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The RSLM spar scale is a new addition to the range, which offers performance to rival fine pitch glass scales at lengths far beyond their reach.
RSLM scale is available in defined lengths up to 5 m with an overall accuracy better than +/-4 um - an industry first! Combined with the ultra-low +/-30 nm sub-divisional error (SDE) of the Signum encoder, RSLM is perfect for long travel applications where metrology cannot be compromised.
The IN-TRAC optical reference mark provides a bi-directionally repeatable datum point across the entire speed and temperature range (over 12 m/s and up to 85 degC) without increasing overall system width.
Further reading
Angle encoder offers high accuracy and resolution
A high accuracy, one-piece, rotary encoder system boasts impressive accuracy with resolution to 0.01 arc second, suiting the most demanding precision applications.
Angle encoder offers high accuracy and resolution
A high accuracy, one-piece, rotary encoder system boasts impressive accuracy with resolution to 0.01 arc second, suiting the most demanding precision applications.
RSLM is available with multiple IN-TRAC optical reference marks regularly spaced for customer selection or a single reference mark, either at the centre of the scale or close to the end of the scale.
Dual optical limits provide easy-to-use end-of-travel indication.
Manufactured from a hard martensitic stainless steel, RSLM offers a low coefficient of thermal expansion (10.8 um/m/degC), yet its special composition provides a high resistance to corrosion.
Signum RSLM is as easy to use as tape scale, yet is as accurate as fine pitch glass scale.
The robust scale offers a much smaller cross section than typical glass scales, allowing easier handling and installation without risk of breakage.
In addition, RSLM can be coiled for simple storage and handling yet behaves as a spar scale once uncoiled.
System designers can choose between clip and clamp mounting, or adhesive tape with epoxy anchor point, to suit their requirements.
The SR readhead features Renishaw's unique filtering optics to provide excellent immunity to dirt, dust and scratches.
Like all Signum encoders, the RSLM encoder system benefits from Signum intelligent signal processing, which ensures excellent reliability and ultra-low sub-divisional error.
In addition, Signum software enables optimum set-up and real-time system diagnostics via a PC's USB port.
As with all Renishaw products, the Signum range is backed-up by a worldwide team offering truly responsive global support. Request a free brochure from Renishaw ...
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