BMIX magnetic, battery-backed quasi-absolute encoder Permanent position detection, even in de-energized condition

The ELGO measuring system BMIX is based on the physical principle of length and position measurement by using magneto-sensitive components. It is used for a high-precision detection of the position, length or speed. A rechargeable battery line integrated in the sensor housing transforms the incremental measuring system into a quasi-absolute measuring system, as the current position is - even in the de-energized state - permanently detected and furtherprocessed internally. Under optimal charging and ambient conditions, the operating time of the batteries is up to 6 months after disconnecting the supply voltage.  

  • Quasi-absolute length and position detection
  • Movements are even detected in de-energized condition
  • Proven magnetically based measuring technology
  • Wear-free, contactless measurement principle
  • Analog output interface (voltage or current, CANopen (DS406) interface 
  • High schock and vibration resistance
  • Robust against dust, dirt, smoke and water
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Mechanical DATA

Measuring principlequasi-absolute
Repeat accuracy± 1 increment
System accuracy in µm at 20 °C

± (1000 + 20 x L), L= measuring length in meters

Distance sensor/ tapemax. 10 mm
Sensor housing materialABS plastic
Housing dimensions
(L x W x H)
100 x 12 x 25 mm
Required magnetic tapeMB20-160-10-1-R
Pole pitch16 mm
 Max. measuring length5000 mm
Type of connectionstandard: open cable ends, options: D-SUB or round connector
Sensor cable1.5 m standard length,  others on request
Weightmeasuring system: approx. 120 g; cable: approx. 60g/m


Power supply voltage10 ... 30 VDC
Residual ripple< 10 %
Current consumptionmax. 150 mA
Battery operating timemin. 6 months after power-off
Interfacesdepending on order: 12 bit analog output 0 ... 20 mA, 12 bit analog output 4 ... 20 mA, 12 bit analog output 0.5 ... 4.5 V or 12 bit analog output 0 ... 10 V,
CANopen (DS406)
Resolution1 mm
Max. operating speed

2 m/s

Environmental conditions

Storage temperature-25 ... +85 °C
Operating temperature-25 ... +85 °C
Humidity95 %, non-condensing
Protection classIP67


Flyer BMIX