RK-5
CONTACTLESS MAGNETOSTRICTIVE LINEAR POSITION
TRANSDUCER WITH FLANGED CONNECTION
Linear position transducer with GEFRAN’S innovative
ONDA magnetostrictive technology for long life.
The absence of electrical contact on the cursor eliminates
wearing and guarantees almost unlimited life.
Gefran’s patented ONDA technology achieves a compact, modular structure for simple installation.
RK-5 is a magnetostrictive position transdu-cer with flanged connection that installs completely inside oil-pressure
cylinders.
Its unique design, plus a wide range of cursor configurations, ensures easy installation and total compatibility with
cylinder manufacturer speci-fications.
Working temperature from -40 to +105°C, working pressures up to 350 bar, high resistance to vibration (25 g)
and shock (100g) give the sensor the indispensable
strength needed for heavy-duty use (for example: mobile
hydraulics).
High performance in terms of transduction of measurement defined as linearity, hystersis and repeatability.
The signal is analog in models with current or voltage
output
(ANALOG OUTPUT)
TECHNICAL DATA
Model
from 50 to 2500 mm
Measurement given
Displacement
Sampling time (typical)
1 ms
Shock test DIN IEC68T2-27
100g - 11ms - single shock
Vibrations DIN IEC68T2-6
25g / 10...2000Hz
Displacement speed
≤ 10 m/s
Maximum acceleration
≤ 100 m/s
Resolution
12 bit (min 50 µm)
Working pressure
350 bar
Nominal power supply
10....32 Vdc( E/R)
8...32Vdc (N/O/K/I outputs)
Max. power ripple
1Vpp
Output signal
0,5...9,5Vdc (RK-5 N)
9,5...0,5Vdc (RK-5 O)
0,5...4,5Vdc (RK-5 K)
4,5...0,5Vdc (RK-5 I)
4...20mA (RK-5 E)
20...4mA (RK-5 R)
Electrical insulation
500V (*) (D.C. Power supply/ground)
Protection against polarity inversion
Yes
Protection against overvoltage
Yes
Hydraulic circuit area protection
IP67/ IP69 with connector
Working temperature
-40°…+105°C
Storage temperature
-30°…+100°C
Coefficient of temperature
0.01% FS / °C
Humidity dew point EN60068-2-30
90% non-condensing humidity
2
displacement
(*) Uses 50V 2J Voltage suppressor
59
MECHANICAL DIMENSIONS
Stroke 50 to 1000 mm
Stroke 1250 to 2500 mm
SENSOR HOUSING (detail of head)
60
INSTALLATION AND CURSOR KIT (to be ordered separately)
PKIT528
PKIT529
PKIT525
“E”
Magnet
ø 25,4 x ø 13,5 x 8mm
“G”
Magnet
ø 33 x ø 13,5 x 8mm
“A”
Plastic spacer
ø 17 x ø 13,5 x 2mm
“F”
Plastic spacer
ø 25,2 x ø 13,5 x 5mm
“H”
Plastic spacer
ø 32 x ø 13,5 x 3,2mm
“B”
Magnet
ø 17 x ø 13,5 x 4mm
INSTALLATION AND CURSOR KIT FOR 13mm HOUSINGS (to be ordered separately)
Plastic spacer
ø 17 x ø 13,5 x 2mm
PKIT526
Plastic spacer
ø 17 x ø 13,5 x 2mm
PKIT527
Magnet
ø 17 x ø 13,5 x 4mm
Magnet
ø 17 x ø 13,5 x 4mm
Plastic spacer
ø 17x ø 13.5 x 7mm
Spacer INOX AISI420
ø 17 x ø 13,5 x 7mm
61
ELECTRICAL / MECHANICAL DATA
Model
Electrical Stroke
(E.S.)
Independent linearity < ±0.04% F.S. (±0.10 mm minimum)
Max. length (A) mm Model +104,7 (excluding cable) Model +109,7 (excluding cable)
Repeatability mm < 0.01
Hysteresis < ±0.005% F.S.
Sampling time msec 1 for stroke up to 600 / 2 up to 2500
50 100 130 150 200 225 300 400 450 500 600 700 800 900 1000 1250 1500 1750 2000 2250 2500
mm Model
CONNECTION TO FLYING LEADS (OPTION F)
Standard length 1000 mm
L.
Version “F”
Color code
Function
Yellow Power supply
Brown n.c.
White 0 Vdc
Green mA/Vdc output
CABLE LENGTH (OPTION A/B)
Code Length
060 60 mm
150 150 mm
240 240 mm
62
ELECTRICAL CONNECTIONS AND CONNECTOR ASSEMBLY (options A and B)
4 3
1 2
PIN
1 Power supply Power supply
2 n.c. mA/Vdc output
3 0 Vdc 0 Vdc
4 mA/Vdc output n.c.
CE CONFORMITY ACCORDING TO DIRECTIVE 2014/30/EU
STANDARD TITLE
ISO 13766 Earthmoving Machinery
ISO 11452-5
EN61326_1;
EN61326_2_3
Road vehicles - Components test methods for electrical disturbances from narrowband radiated
electromagnetic energy. part 5: stipline 200V/m
Electrical equipment for measurement, control and laboratory use
CURSOR KIT (to be ordered separately)
CODE
Ø
HOUSING
HOUSING
DEPTH
PISTON
MATERIAL
MAGNET
VERSION “A” VERSION “B”
FUNCTION FUNCTION
PLASTIC
SPACER
AMAGNETIC
SPACER
MAGNETIC
SPACER
PKIT528 Ø 25,4 mm 13 mm
PKIT529 Ø 33 mm 13 mm
PKIT525 Ø 17 mm 6 mm
PKIT526 Ø 17 mm 13 mm amagnetic
PKIT527 Ø 17 mm 13 mm magnetic
magnetic/
amagnetic
magnetic/
amagnetic
magnetic/
amagnetic
63
ORDER CODE
Position
transducer
R K
A
5
OUTPUT CONFIGURATION
Pin1 Power
Pin2 N.C.
Pin3 0Vdc
Pin4 Output
Pin1 Power
Pin2 Output
Pin3 0Vdc
Pin4 N.C.
Free contacts F
Model (0050-2500)
OUTPUT CONFIGURATION
Analog 0.5...9.5 VDC N
Analog 9.5...0.5 VDC O
Analog 0.5...4.5 VDC K
Analog 4,5...0.5 VDC I
Analog 4...20 mA E
Analog 20...4 mA R
0
0 0 X
0
X
A
X
0 X X
00
CABLE LENGTH
(for connections A and B only)
060 60 mm
150 150 mm
240 240 mm
000 F output
B
Mechanical and/or electrical characteristics differing from those in the standard models can be ordered on request.
Example of description
RK5A A XXXX N 0000 060 00 0
Reserved
60mm
Reserved
0.5...9.5Vdc
0050...2500
M12 STD.
Version A
Reserved
64
OPTIONAL CONNECTORS
CON031 for 5-pin output
CON041 for 90° 5-pin output
CON031
IP67 - IEC 48B
Strain relief for Ø6.5 cable
CON041
IP67
Strain relief for Ø6 - Ø8 cable
OPTIONAL CABLES (to be ordered separately)
Length “L”
2 mt CAV011 CAV021
5 mt CAV012 CAV022
10 mt CAV013 CAV023
15 mt CAV015 CAV024
PREWIRED CABLE WITH STRAIGHT CONNECTOR
The cable braiding is connected to the connector
GEFRAN spa reserves the right to make any kind of design or functional modification at any moment without prior notice.
Straight cable 90° cable
CODE
DTS_RK-5_10-2016_ENG
65
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