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MP Schaevitz™ LVDT

LVDT Series MP

The MP Series LVDTs provide classic precision performance in harsh industrial environments. The rugged, extruded anodized aluminium housing contains a 100% epoxy encapsulated LVDT, affording superior environmental, mechanical and EMI/RFI protection. The convenient heavy-duty terminal strip replaces multiple lead wires thereby simplifying electrical connection, while the mounting flanges ease mechanical installation. An integral Teflon® bore liner provides a smooth, low-friction bearing surface for the core and reduces diametrical clearance.

Available in a variety of stroke ranges from ±0.5 to ±10 inches, the MP Series is the ideal choice for industrial mill type applications, power turbines, or wherever aggressive environmental conditions are present. The MP Series is also available with a small diameter/low-mass core, for applications where excessive core weight could influence the motion. The lightweight core can also reduce mechanical stresses and help preserve the structural integrity of the core actuation assembly during high speed displacement or under high vibration.

Features

  • Rugged aluminium housing
  • 100% epoxy encapsulated
  • ±0.25% linearity (100% stroke)
  • Shock and vibration tolerant
  • Screw terminals and mounting flanges
  • Calibration certificate supplied with each unit

Applications

  • Paper mills
  • Power turbine valve position
  • Rolling mills
  • Metal forming presses
  • Steel mill “ton-dish” slide valve feedback
  • Progressive rotary press Z-axis feedback

Performance Specifications

Parameter 500 MP 1000 MP 2000 MP 3000 MP 4000 MP 5000 MP 10000 MP


Electrical Specifications:

Stroke range:

±0.5 in
±12.7 mm

±1 in
±25.4 mm

±2 in
±50.8 mm

±3 in
±76.2 mm

±4 in
±101.6 mm

±5 in
±127 mm

±10 in
±254 mm

Sensitivity:

mV/V per inch

0.7

0.39

0.23

0.25

0.20

0.14

0.07

mV/V per mm

28

15.3

9.1

9.8

7.9

5.5

2.8

Output at stroke ends:

350 mV/V

390 mV/V

460 mV/V

750 mV/V

800 mV/V

700 mV/V

700 mV/V

Phase shift:

-1°

-3°

-5°

-11°

-1°

-3°

-5°

Input impedance (PRI):

460 Ω

460 Ω

330 Ω

315 Ω

275 Ω

310 Ω

550 Ω

Output impedance (SEC):

375 Ω

320 Ω

300 Ω

830 Ω

400 Ω

400 Ω

750 Ω

Linearity in % of FS:

at 50 % stroke

0.15

0.15

0.15

0.15

0.15

0.15

0.15

at 100 % stroke (max.)

0.25

0.25

0.25

0.25

0.25

0.25

0.25

at 125 % stroke

0.35

1.00

0.50*

0.50*

0.50*

1.00*

1.00*

at 150 % stroke

0.75

1.30*

1.00*

1.00*

1.00*

--

--

Supply voltage:

3 Vrms sine wave

Input frequency range:

400 Hz to 5 kHz

Test frequency:

2.5 kHz

Null voltage (max.):

0.5 % FSO


Environmental Specifications and Materials:

Operating temperature

-55 … +150 °C

Shock survival:

1000 g (11 ms half-sine)

Vibration tolerance:

20 g up to 2 kHz

Housing material:

Aluminium, anodized

Electrical termination:

6 terminal barrier strips

Notes:
- All values are nominal unless otherwise noted
- Electrical specifications are for the test frequency indicated in the table
- FS: Full Scale is 2X for ±X stroke
- FSO: Full Scale Output is the output at X position for ±X stroke
* requires special reduced core length

Dimensions

Dimensions of LVDT Series MP

All dimensions in inches, values in brackets in mm, approx. values.
These drawings are for information only and not intended for construction purpose. Please ask for detailed drawings.

Modell Dimensions, approx. eight, approx.
 

A (Body)

B (Core)

Body

Core
 

inch

mm

inch

mm

oz

g

oz

g

500 MP

6.50

165.1

3.45

87.6

12.36

350

0.64

18

1000 MP

7.64

194.1

4.00

101.6

16.59

470

0.74

21

2000 MP

11.01

279.7

5.30

134.6

21.00

595

0.95

27

3000 MP

13.85

351.8

5.60

142.2

26.12

740

0.99

28

4000 MP

16.68

423.7

7.00

177.8

31.77

901

1.27

36

5000 MP

18.92

480.6

7.00

177.8

36.18

1026

1.27

36

10000 MP

31.90

810.3

8.50

215.9

60.89

1726

1.52

43

Wiring

Wiring of LVDT Series MP

Connect „4“ to „5“ for differential output.

Ordering Information

Add multiple option dash numbers together to determine proper ordering suffix.

Example:
Model 500MP-028 describes a LVDT with stroke ±12.7 mm (500MP), tested with 5kHz (002), metric threaded core (006) and a low-mass core (020).

Option number Description

002

5 kHz Linearity test 1)

006

Metric threaded core M4 x 0.7

020

Small-diameter / low-mass core 2)

1) Available on 500 MP only
2) Mass and dimensions on request
Information in the PDF datasheet (see above) may be more detailed. Due to continual product development, ALTHEN and partners reserve the right to vary the foregoing details without prior notice.