Subminiature Draw Wire Displacement Sensor

Description

The MK30 subminiature draw wire displacement sensor is low cost, compact and measures low ranges from 0-50mm to 0-750mm.  They have a robust plastic housing and a very compact design, enabling it to fit into the smallest of spaces.  This is the second smallest design and lowest range of the MK series.  For the smallest draw wire sensor see the new MT micro draw-wire displacement sensor.

Analogue potentiometer and digital encoder options are available to suit your application.  Analogue versions are available in measuring ranges of 0-50mm up to 0-750mm, digital versions are available in 0-500mm and 0-750mm only.

For the analogue version of the MK30 subminiature draw wire displacement sensor the non linearity is better than ±0.25% of the full scale output for 0-150mm upwards, with an option of ±0.1% for hybrid potentiometers 0-250mm upwards.

The digital encoder versions (0-500mm and 0-750mm) have a non-linearity of ±0.05% of the full scale output.

Specifications

  • Measuring Ranges: 0-50mm to 0-750mm
  • Analogue: 0-50mm to 0-750mm, Digital: 0-500mm to 0-750mm
  • Outputs Include: Potentiometer / Incremental Encoder
  • Environmental Protection: IP20 Analogue, IP54 Digital
  • Non-Linearity: <±0.1% Full Scale Output

About

  • Low-Cost Ideal for OEM
  • Low Range Measuring
  • Customised Versions for High Volume Available
  • Analogue and Digital Versions
  • Conductive Plastic/Wire/Hybrid Potentiometer (Analogue Only)
  • Incremental Encoder (Digital Only)
  • Robust Plastic Housing

Analogue Specifications

ModelMK30-50mmMK30-150mmMK30-250mmMK30-500mmMK30-750mm
Measuring range50 mm150 mm250 mm500 mm750 mm
Analog outputPotentiometer
ResolutionConductive plastic potentiometertowards infinity
Wire potentiometer-0.1 mm0.1 mm0.15 mm0.2 mm
Hybrid potentiometertowards infinity
LinearityConductive plastic potentiometer P50≤ ±0.5 % FSO≤ ±0.25 mm----
Wire potentiometer P25≤ ±0.25 % FSO---≤ ±1.25 mm≤ ±1.87 mm
Hybrid potentiometer P25≤ ±0.25 % FSO-≤ ±0.375 mm≤ ±0.625 mm--
Hybrid potentiometer P10≤ ±0.1 % FSO--≤ ±0.25 mm≤ ±0.5 mm≤ ±0.75 mm
Sensor elementConductive plastic/wire/hybrid potentiometer
Wire extension force (max.)approx. 2.5 N
Wire retraction force (min.)approx. 1 N
Wire acceleration (max.)approx. 5 g
MaterialHousingPlastics
Measuring wirePolyamide-coated stainless steel (ø 0.36 mm)
Wire mountingEyelet (ø 4.5 mm)
MountingMounting holes or mounting grooves on the sensor housing
Temperature rangeStorage-20 … +80 °C
Operation-20 … +80 °C
ConnectionSoldering tags
Shock (DIN EN 60068-2-27)50 g / 5 ms in 3 axes, 2 directions and 1000 shocks each
Vibration (DIN EN 60068-2-6)20 g / 20 … 2000 Hz in 3 axes and 10 cycles each
Protection class (DIN EN 60529)IP20
Weightapprox. 45 g

Digital Specifications

ModelMK30-500MK30-750
Measuring range500mm750mm
Digital outputEncoder: E (5 … 24 VDC) / Encoder E830 (8 … 30 VDC)
Resolution10 pulses/mm6.7 pulses/mm
0.1 mm0.15 mm
Linearity ≤ ±0.05 % FSO≤ ±0.25 mm≤ ±0.375 mm
Sensor elementIncremental encoder
Wire extension force (max.)approx. 2.5 N
Wire retraction force (min.)approx. 1 N
Wire acceleration (max.)approx. 5 g
Material: HousingPlastics
Material: Measuring WirePolyamide-coated stainless steel (ø 0.36 mm)
Wire mountingEyelet (ø 4.5 mm)
MountingMounting holes or mounting grooves on the sensor housing
Temperature range: Storage-20 … +80 °C
Temperature range: Operation-20 … +80 °C
Connectionintegrated cable, radial, length 1 m
Shock (DIN EN 60068-2-27)50 g / 5 ms in 3 axes, 2 directions and 1000 shocks each
Vibration (DIN EN 60068-2-6)20 g / 20 … 2000 Hz in 3 axes and 10 cycles each
Protection class (DIN EN 60529)IP54
Weightapprox. 80 g (incl. cable)

Output Options

ModelRangeOutput
MK300-50mm(P) Potentiometer
MK300-150mm(P) Potentiometer
MK300-250mm(P) Potentiometer
MK300-500mm(P) Potentiometer
MK300-500mm(E) Encoder 5-24Vdc
MK300-500mm(E830) Encoder 8-30Vdc
MK300-750mm(P) Potentiometer
MK300-750mm(E) Encoder 5-24Vdc
MK300-750mm(E830) Encoder 8-30Vdc
Higher accuracy potentiometer options are available on the 0-500mm and 0-750mm range.

Product Dimensions

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