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.