Gefran WRG-A Data Sheet

WRG-A

CONTACTLESS MAGNETOSTRICTIVE LINEAR POSITION
TRANSDUCER (ANALOG OUTPUT)

Main characteristics

• Magnetostrictive technology

• Strokes from 50 to 1500 mm

• Optimized mechanical structure

•

Rod, nipple, exagonal flange AISI 316

• Work temperature: -20....+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 magnetostrictive
technology.
The absence of electrical contact on the cursor eliminates all wear
and guarantees almost unlimited life.
The analog interface, available with different voltage ranges or in
current, with direct and reverse output guarantees greater flexibility
of installation and adaptation to pre-existing systems.
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.

TECHNICAL DATA

Model from 50 to 1500 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 Infinite

Cursor Floating separate cursor

Working temperature -20....+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 1 ms to 1.5 ms

(depending on stroke)

2

displacement

ELECTRICAL DATA

Output signal

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

Max. power ripple 1Vpp 1Vpp

Max. consumption 35mA 70mA

Load on output >= 10kΩ 50... 500Ω

Max. output value 12V 30mA

Alarm output value 10.5V 21mA

Electrical isolation 50V 50V

Protection against polarity
inversion

Protection against overvoltage YES YES

Protection against power supply
on output

ELECTRICAL / MECHANICAL DATA

Model

Sampling time

Dimensions Max.
(A)

Electrical stroke mm Model
Independent

linearity
Repeatibility mm < 0.02
Hysteresis mm < 0.01

50 100 130 150 200 400 450 500 600 700 750 800 900 1250 1500

225 300 1000

ms 1 1,5

mm Model +178.2 Model +183.2

≤ ± 0.04% FS (min ± 0.090 mm)

0....10.V

10....0 V (A)

YES YES

YES YES

20mA ...4mA (E)

4...20mA

MECHANICAL DIMENSIONS

Strokes from 50 to 1000 mm

A

55

Non

active zone

C.E.=Model

Version M

Version I

Strokes from 1250 to 1500 mm

60

Non

active zone

C.E.=Model

Floating magnet

ø10

M18 x 1.5

3/4"-16 UNF-2A

Floating magnet

active zone

A

active zone

50

Non

47.5

50

Non

47.5

ø25

ø25

24.5

73.2 9.5

ø45

Installation surface

73.2 9.5

Thread M4
depth. 6

Version

Version

MOUNTING INSIDE A CYLINDER

55 C.E. 47.5

Non

active zone

ø10

M18 x 1.5

M

3/4"-16 UNF-2A

I

WRG-A-A/B connector output

24.5

12.2

Non

active zone

ø45

Installation surface

ø10

ø12.7

Non-magnetic spacer

Floating magnet