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MHR Schaevitz™ Miniature LVDT

Miniature LVDT Series MHR

The MHR Series of LVDT is ideal for applications where excessive core weight could influence the motion of sensitive mechanisms. The lightweight core also helps minimize stresses and preserves the structural integrity of the core actuation assembly. High sensitivity results from close electrical coupling between coil and core. Magnetic stainless steel housing provides electromagnetic and electrostatic shielding.

Features

  • Compact size
  • Lightweight / low mass core
  • Shock and vibration tolerant
  • Mild radiation resistance (optional)
  • Certificate of Calibration supplied with each LVDT

Applications

  • X, Y, Z stage position feedback
  • Wire-die bonding machines
  • Cylinder position feedback
  • Voice coil teasing
  • Materials testing machines
  • Space restricted installations

Specifications

Supply voltage:

3 Vrms nominal

Input frequency range:

2 … 20 kHz

Test frequency:

2.5 kHz

Operating temperature range

-55 … +150 °C

Shock survival

1000 g for 11 ms

Vibration tolerance

20 g to 2 kHz

Housing material

AISI400 stainless steel

Lead wires

Six lead wires, 32 AWG stranded copper, PTFE insulated, 300 mm

Electrical Specifications

Frequency of supply voltage 10 kHz (recommended):

Model Stroke range Sensitivity Output at Null volt. Linearity at stroke Impedance Phase shift
     

mV/V per

stroke ends

(max.)

50%

100%

125%

150%

Pri

Sec

  
 

inch

mm

0.001 in

mm

mV/V

% FSO

% of FS

Ohm

Ohm

  

005 MHR

±0.005

±0.13

8.70

343

43.5

5

0.20

0.25

0.30

0.40

84

302

+38°

010 MHR

±0.010

±0.25

6.05

238

60.5

1

0.10

0.25

0.35

0.35

165

300

+20°

025 MHR

±0.025

±0.64

8.10

319

202.5

0.5

0.15

0.25

0.25

0.30

238

485

+15°

050 MHR

±0.05

±1.27

3.15

124

157.5

0.5

0.15

0.25

0.35

0.50

419

154

+88°

100 MHR

±0.10

±2.54

2.80

110

280

0.5

0.15

0.25

0.25

0.30

400

200

+5°

250 MHR

±0.25

±6.35

2.07

81

517.5

0.5

0.15

0.25

0.35

0.50

345

420

+7°

500 MHR

±0.5

±12.7

1.96

77

980

0.5

0.15

0.25

0.30

0.75

264

810

+4°

1000 MHR

±1

±25.4

0.77

30

770

0.5

0.20

0.25

0.50

--

155

450

+1°

2000 MHR

±2

±50.8

0.49

19

980

0.5

--

0.50

--

--

504

1780

+15''



Frequency of supply voltage 2.5 kHz (standard):

Model Stroke range Sensitivity Output at Null volt. Linearity at stroke Impedance Phase Shift
     

mV/V per

stroke ends

(max.)

50

100

125

150

Pri

Sec

  
 

inch

mm

0.001 in

mm

mV/V

% FSO

% of FS

Ohm

Ohm

  

005 MHR

±0.005

±0.13

3.19

126

16

6

0.20

0.25

0.30

0.40

59

260

+73°

010 MHR

±0.010

±0.25

3.36

132

33.6

3

0.10

0.25

0.35

0.35

78

192

+59°

025 MHR

±0.025

±0.64

4.36

172

109

0.5

0.15

0.25

0.25

0.30

116

286

+58°

050 MHR

±0.05

±1.27

2.55

100

127.5

0.5

0.15

0.25

0.35

0.50

141

90

+36°

100 MHR

±0.10

±2.54

2.40

94

240

0.5

0.15

0.25

0.25

0.30

135

125

+30°

250 MHR

±0.25

±6.35

1.73

68

432.5

0.5

0.15

0.25

0.35

0.50

147

268

+29°

500 MHR

±0.5

±12.7

1.60

63

800

0.5

0.15

0.25

0.30

0.75

145

445

+19°

1000 MHR

±1

±25.4

0.70

27

700

0.5

0.20

0.25

0.50

--

100

370

+6°

2000 MHR

±2

±50.8

0.47

19

940

0.5

--

0.25

--

--

304

13620

+3°

- All values are nominal unless otherwise noted
- FS: Full Scale is 2X for ±X stroke
- FSO: Full Scale Output is the output at X position for ±X stroke

Mechanical Specifications

Dimensions of LVDT Series MHR

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.

Model number Weight, approx. Dimensions, approx.
 

Body

Core

A (body)

B (core)
 

oz

g

oz

g

inch

mm

inch

mm

005 MHR

0.07

2

0.004

0.1

0.375

9.5

0.180

4.6

010 MHR

0.11

3

0.007

0.2

0.535

13.6

0.233

5.9

025 MHR

0.18

5

0.016

0.5

0.660

16.8

0.400

10.2

050 MHR

0.21

6

0.016

0.5

0.815

20.7

0.500

12.7

100 MHR

0.21

6

0.025

0.7

0.990

25.1

0.625

15.9

250 MHR

0.32

9

0.032

0.9

1.850

47.0

1.125

28.6

500 MHR

0.60

17

0.056

1.6

3.300

83.8

2.000

50.8

1000 MHR

0.92

26

0.088

2.5

5.600

142.2

3.000

76.2

2000 MHR

1.4

40

0.088

2.5

8.000

203.2

3.000

76.2

Wiring Information

LVDT Series MHR wiring

Connect „Green“ to „Blue“ for differential output

Ordering Information

Specify the MHR Model followed by the desired option number(s) ordered together.

Example:
Model 050 MHR-009 is a MHR series LVDT with a range of ±1.27 mm (050 MHR), with 10 kHz testing (003) and metric thread core (006)

Option number Description

002

5 kHz Linearity test

003

10 kHz Linearity test

006

Metric thread core

080

Mild radiation resistance (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.