Gefran WRP-A Data Sheet

WRP-A

CONTACTLESS MAGNETOSTRICTIVE LINEAR POSITION
TRANSDUCER (ANALOG OUTPUT)

Main characteristics

• Optimized mechanical structure

• Strokes from 50 to 2500 mm

• Wide range of connectors for the electrical connection

Rod, nipple, exagonal flange AISI 316

•

• Work temperature: -30°…+75°C

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

• Power supply 24Vdc ± 20%

• Protection IP67

Electromagnetic compatibility EMC 2014/30/EU

•

• Compliant to the directive RoHS 2011/65/EU

Contactless linear position transducer with HYPERWAVE
magnetostrictive technology.
The analog interface, available with various output ranges in voltage or in
current, guarantees simpler installation and easier adaptation to existing
systems.
The absence of electrical contact on the cursor eliminates all wear and

TECHNICAL DATA

Model from 50 to 2500 mm

Measurements displacement

Position read sampling
time (typical)

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

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

Displacement speed ≤ 10 m/s

Max. acceleration ≤ 100 m/s

Resolution 16 bit (max noise 5 mVpp)

Cursor Floating separate cursor

Working temperature -30...+75°C

Storage temperature -40...+100°C

Coefficient of temperature ≤ 0,01% F.S./°C

Protection IP67

Operative pressure 350 bar (peak max. 500 bar)

From 0,5 ms to 3 ms

(depending on stroke)

2

displacement

guarantees almost unlimited life.
High accuracy of the mesurement with reference to the non linearity,
repeatability and hysteresis. High resistance to vibrations, mechanical
shocks for use in a harsh industrial environment.

ELECTRICAL DATA

Output signal 0...10V (A) 4...20mA (E)

0...20mA (G)

Nominal power supply 24 Vdc ±20% 24 Vdc ±20%

Max. power ripple 1Vpp 1Vpp

Max. consumption 70mA 90mA

Load on output 5kΩ < 500Ω

Max. output noise < 5mVpp < 5mVpp

Max. output value 12V 30mA

Alarm output value 10.5V 21mA

Electrical isolation 500V (*) 500V (*)

Protection against polarity
inversion

Protection against overvoltage Yes Yes

Protection against power supply
on output

(*) Using voltage suppressor 30V 0,4J

Yes Yes

Yes Yes

ELECTRICAL / MECHANICAL DATA

Model

Sampling
time

Dimensions
Max. (A)

Electrical stroke mm Model

Independent
linearity

Repeatibility mm < 0,01

Hysteresis mm < 0,01

50 100 130 150 200 400 450 500 600 700 750 800 900 1250 1500 1750 2000 2250 2500

225 300 1000

ms

mm

0,5 1 1,5 2

Model +178,2 Model +183,2

≤ ± 0,02% FS (min ± 0,060 mm)

MECHANICAL DIMENSIONS

Floating magnet

Strokes from 50 to 1000 mm

no active zone no active zone

Strokes from 1100 to 2500 mm

no active zone no active zone

Floating magnet

Installation surface

Floating magnet

M4 thread
prof. 6

WRP-A-F/R cable output WRP-A-A/B/C/H connector output

MOUNTING INSIDE A CYLINDER

no active

zone*

no active

zone

Installation surface

Non-magnetic spacer

* 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