Magnet Specification AS5304 Magnetic Multipole Strip, MS20-50 Pole Length 2.0 mm, 50 poles Magnet Specification AS5304 Table of Contents 1 General ................................................................................................................................ 3 2 Dimensional Specification .................................................................................................... 3 3 Magnetic Input Specification ................................................................................................ 3 4 Magnet Supplier Information ................................................................................................ 5 Copyright ............................................................................................................................................. 6 Disclaimer ............................................................................................................................................ 6 Revision History Revision Date Owner Description 0.2 8 Sept 2014 ekno New design layout www.ams.com page 2/6 Magnet Specification AS5304 1 General This specification defines the dimensional and magnetic properties of a multi pole magnetic strip for use with the AS5304 magnetic linear motion and off-axis rotary angle encoder. Material: rubber bonded Strontium Ferrite SrFe. 2 Dimensional Specification Magnet Order # MS20-50 on ams web shop, refer to Figure 1 Parameter Symbol Min Typ Max Unit Note Strip Width W 100,8 4 101, 6 102,36 mm 4.00” +/- 0.030” Strip Cut Length S 4,62 5,0 5,38 mm 0.197” +/- 0.015” Strip Thickness T 0,762 0,76 2 0,813 mm 0.030” +0.00” / – 0.002” Thermal expansion 49 x10-6/K Mechanical length expansion Density 3,4 g/cm3 estimated Delivery 4,00” x 0.030” x 200’ Outdoor adhesive, cut thru .197”. Minimum 1 rolls (~ 12.000 strips). 3 Magnetic Input Specification Magnet Order # MS20-50 on ams web shop, refer to Figure 1 Parameter Symbol Pole length Lp Min Typ Max 2,00 Unit Note mm results in pole pair length of 4mm (50 poles @ 2,0mm, 2 border poles ~1,0mm) Resolution Res 25 µm With AS5304 @ maximum interpolation µm Measured at Bz=0, all poles (Lp) within active region 50 poles Excluding poles with L<LP at the ends of the strip 15 mT Vertical component of the magnetic field strength in the center of the strip at 25°C +/-1,5 mT All poles within active region 0,5 mm estimated Pole length deviation +/- 50 Number of poles Magnetic field amplitude @ 0.5mm distance Bpk Amplitude variation Active Region to strip edge www.ams.com A page 3/6 Magnet Specification AS5304 Parameter Symbol Min Typ Max Unit Note First Bz=0 position to strip edge D1 TBD 1,0 TBD mm Tolerance estimated +/-0,25µm Last Bz=0 position to strip edge D2 TBD 1,0 TBD mm Tolerance estimated +/-0,25µm Temperature range Tamb -18 25 80 °C Temperature drift TkBr %/K Magnetic field temp. drift Bpk Bpk +0,2 D2 D1 2 3 4 N S N S 47 48 49 50 A 1 N S N S N S A S S T Lp W Figure 1 www.ams.com page 4/6 Magnet Specification AS5304 4 Magnet Supplier Information ARNOLD Magnetic Technologies 107 Industry Road Marietta, OH 45750 http://www.arnoldmagnetics.com/sales/index.htm www.ams.com page 5/6 Magnet Specification AS5304 Copyright Copyright © 1997-2014, ams AG, Tobelbader Strasse 30, 8141 Unterpremstaetten, Austria-Europe. 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No obligation or liability to recipient or any third party shall arise or flow out of ams AG rendering of technical or other services. Contact Information Headquarters ams AG Tobelbader Strasse 30 8141 Unterpremstaetten Austria T. +43 (0) 3136 500 0 For Sales Offices, Distributors and Representatives, please visit: http://www.ams.com/contact www.ams.com page 6/6