Gefran IK4S Data Sheet

IK4S (with ONDA technology)

CONTACTLESS MAGNETOSTRICTIVE LINEAR POSITION
TRANSDUCER (SYNCHRONOUS SERIAL OUTPUT)

Main characteristics

• ONDA technology

• Optimized mechanical structure

• Strokes from 50 to 4000 mm

• Wide range of connectors for the electrical connection

• Rod, nipple, exagonal flange AISI 316

• Power supply 10....32 Vdc

• Resistance to vibration (DIN IEC68T2/6 12g)

• Protection IP67

• Work temperature: -30°…+90°C

• Synchronous Serial Interface direct to controllers

• Output data resolution available from 1 to 40mm

• Data format: binary or Gray code; incremental/decremental

Contactless linear position transducer with ONDA magnetostrictive
technology with RS422-SSI digital output interface.
The absence of electrical contact on the cursor eliminates all wear
and guarantees almost unlimited life.

The IK4 line’s new mechanical structure offers improved features for

in-cylinder use, including a series of new multi-connector models, free
rotation of the connector head, and replacement of internal electronics
without removal of the transducer.

TECHNICAL DATA

ELECTRICAL DATA

Model from 50 to 4000 mm

Measurement taken Displacement

Position read sampling time
(typical)

1 ms

Shock test DIN IEC68T2-27 100g - 11ms - single shock

Vibrations DIN IEC68T2-6 12g / 10...2000Hz

Displacement speed ≤ 10 m/s

2

Max acceleration ≤ 100 m/s

displacement

Output data resolution available 1,2,5,10,20,40 mm

Cursor (see note) Floating magnet

Working temperature -30...+90°C

Storage temperature -40...+100°C

Coefficent of temperature 20ppm F.S./°C

Protection IP67

Operative pressure 350 bar (pic max. 500 bar)

Note: For multi-cursor versions, the cursors have to work under the same distance and temperature conditions

Output signal

Data length 24 - 25 bit

Nominal power supply 10... 32 Vdc

Max. power ripple 1Vpp

Max. input 50mA

Output load RS422/485 standard

Electrical isolation

Protection agains polarity
inversion

Protection against
overvoltage

Self-resetting internal fuse Yes

(*) it includes a 50V 2J voltage suppressor

ELECTRICAL / MECHANICAL DATA

150 175 200 225 250 300 350 360 400 450 500 550 600 650 700 750 800 850 900

Model

Electrical stroke
(E.S)

mm Model

1301007550

950

1750 2000 2250

Synchronous Serial (SSI);

Binary/Gray;

Incremental/Decremental

500 V (*)

(D.C. supply / earth)

Yes

Yes

1100

1000

2750 3000 3250 3500

2500

1250 1300 1400

1200

3750 4000

1500

Independent
linearity

Max. dimensions
(A)

Repeatability mm < 0,01 (limited by the resolution of the output value)

Hysteresis < ± 0,005% FS (min 0,010 mm)

Sampling
time

± %F.S. ≤ ± 0,02 %FS (min ± 0,060mm)

mm < 1250 mm = Model + 178.2mm ; ≥ 1250mm = Model +183.2mm

ms 1 (for stroke from 1000) 2 (for stroke from 1100 to 2000) 4 (for stroke >2000)

MECHANICAL DIMENSIONS

Strokes from 50 to 1000 mm

no active

zone

Strokes from 1250 to 4000 mm

no active

zone

no active

Floating magnet

Floating magnet

zone

Installation surface

no active

zone

M4 thread
prof. 6

IK4-S-F/R cable output IK4-S-B/D connector output

MOUNTING INSIDE A CYLINDER

no active

zone

*

Installation surface

no active

zone

Non-magnetic spacer

Floating magnet

* for stroke up to 1000 mm (included) – over 1000 mm, the non-active zone becomes 60 mm because the tip includes a M4 threaded
hole