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GSI4 Guided Linear Encoder Unit robust; price attractive alternative to digital Glass Scale Encoders

  • High quality guiding unit with sensor
  • Cost-effective alternative to glass scales
  • Max. resolution of 0.001 mm (at 4-edge triggering)
  • Power supply / output levels 5 V or  10-30 V
  • Output channels: A, A', B, B' and R, R'
  • Adjustable reference pulse (channels R, R')
  • Measuring lengths up to 1 meter
  • Speed proportional square wave outputs
  • Robust, resistant against dirt and shock

Product inquiry

Mechanical DATA

Measuring principleincremental
Repeat accuracy± 1 increment 
System accuracy in µm at 20 °C± (20 + 20 x L), L= measuring length in meters
Distance sensor / tapefixed by guide carriage
Sensor housing materialsensor: casting compound, guiding unit: aluminium
Housing dimensions
(L x W x H)
guide carriage: 80 x 50 x 12 mm (without cable and coupling adaptor),
guide rail: (150 + measuring length) x 48 x 22.5 mm
Required magnetic tapeMB20-20-10-1-R-HG
Pole pitch2 mm (at 0.001 mm resolution)
 Max. measuring length 1 m
Connectionsopen cable ends, connectors optionally
Sensor cable1.5 m standard length, others on request, drag chain suitable 
Sensor cable bending radius60 mm
Weightapprox. 620 g at 330 mm measuring length


Power supply voltage10 ... 30 VDC or 5 VDC
Residual ripple10 ... 30 VDC: <10 %, 5 VDC: ± 25 mV
Current consumption10 ... 30 VDC: max. 50 mA,
5 VDC: max. 100 mA (with unloaded outputs)
Output signalsA, A', B, B', R, R'
Output levelsHTL or TTL
Output current per channelmax. 20 mA
Resolution (at 4 edge evaluation)up to 0.001 mm
Index pulse reference pulse with adjustable position 
Max. output frequency per channeldepends on selected resolution
Max. operating speeddepends on selected resolution

Environmental conditions

Storage temperature-25 ... +85 °C
Operating temperature-10 ... +70 °C, -25 ... +85 °C on request
Humidity95 %, non-condensing
Protection classsensor system: IP67, mechanical parts: IP54


Flyer GSI4