Subminiature Draw Wire Displacement Sensor | Low Cost | MK30

Very Compact & Accurate, with Customisation Available

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.

If you need a higher measuring range, take a look at our MK120 draw wire sensor range which measures up to 5000mm or our extreme long range draw wire sensor which measures up to 50m!

Features

  • 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
  • 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

Specifications

Model MK30-50mm MK30-150mm MK30-250mm MK30-500mm MK30-750mm
Measuring range 50 mm 150 mm 250 mm 500 mm 750 mm
Analog output Potentiometer
Resolution Conductive plastic potentiometer towards infinity
Wire potentiometer - 0.1 mm 0.1 mm 0.15 mm 0.2 mm
Hybrid potentiometer towards infinity
Linearity Conductive 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 element Conductive 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
Material Housing Plastics
Measuring wire Polyamide-coated stainless steel (ø 0.36 mm)
Wire mounting Eyelet (ø 4.5 mm)
Mounting Mounting holes or mounting grooves on the sensor housing
Temperature range Storage -20 … +80 °C
Operation -20 … +80 °C
Connection Soldering 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
Weight approx. 45 g

Digital Specifications

Model MK30-500 MK30-750
Measuring range 500mm 750mm
Digital output Encoder: E (5 … 24 VDC) / Encoder E830 (8 … 30 VDC)
Resolution 10 pulses/mm 6.7 pulses/mm
0.1 mm 0.15 mm
Linearity ≤ ±0.05 % FSO ≤ ±0.25 mm ≤ ±0.375 mm
Sensor element Incremental encoder
Wire extension force (max.) approx. 2.5 N
Wire retraction force (min.) approx. 1 N
Wire acceleration (max.) approx. 5 g
Material: Housing Plastics
Material: Measuring Wire Polyamide-coated stainless steel (ø 0.36 mm)
Wire mounting Eyelet (ø 4.5 mm)
Mounting Mounting holes or mounting grooves on the sensor housing
Temperature range: Storage -20 … +80 °C
Temperature range: Operation -20 … +80 °C
Connection integrated 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
Weight approx. 80 g (incl. cable)

Output Options

Model Range Output
MK30 0-50mm (P) Potentiometer
MK30 0-150mm (P) Potentiometer
MK30 0-250mm (P) Potentiometer
MK30 0-500mm (P) Potentiometer
MK30 0-500mm (E) Encoder 5-24Vdc
MK30 0-500mm (E830) Encoder 8-30Vdc
MK30 0-750mm (P) Potentiometer
MK30 0-750mm (E) Encoder 5-24Vdc
MK30 0-750mm (E830) Encoder 8-30Vdc
Higher accuracy potentiometer options are available on the 0-500mm and 0-750mm range.

Product Dimensions

MK30 Analogue 0-50mm Subminiature Draw Wire Displacement Sensor Outline
MK30 Analogue 150mm-750mm subminiature Draw Wire Displacement Sensor Outline
MK30 Digital Subminiature Draw Wire Displacement Sensor Outline

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