Gefran WRA-S-0250 - Magnetostrictives

Model from 50 to 4000 mm
Measurement taken Displacement
Position read sampling time
 (typical) 1 ms
 Shock test DIN IEC68T2-27 100g - 11ms - single shock
 Vibrations DIN IEC68T2-6 15g / 10...2000Hz
 Displacement speed ≤ 10 m/s
 Max acceleration ≤ 100 m/s2
 displacement
 Output data resolution available 0.5.....40μm
 Cursor (see note) Floating magnet
Working temperature -30...+90°C
Storage temperature -40...+100°C
 Coefficent of temperature 20ppm F.S./°C
 Protection IP67
Operative pressure 350 bar (peak max. 500 bar(**)
(**) The operating and max. peak pressure, can only be reached
by following the installation guide specified on the data sheet (see
section “INSTALLATION INSIDE A CYLINDER”).
Output signal
Synchronous Serial (SSI);
Binary/Gray;
Incremental/Decremental
Data length 24 - 25 bit
Nominal power supply 10... 32 Vdc
Max. power ripple 1Vpp
Max. input 50mA
Output load RS422/485 standard
Electrical isolation 500 V (*)
(D.C. supply / earth)
Protection agains polarity
inversion Yes
Protection against
overvoltage Yes
Self-resetting internal fuse Yes
(*) it includes a 50V 2J voltage suppressor