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HCD Hermetically Sealed LVDT

LVDT HCD

The HCD series LVDTs are impervious to dirt, water, steam spray and most corrosives. Tungsten inert gas (TIG) welding provides hermetic sealing that is free from oxidation-producing faults that may cause leakage. They have been qualified at pressures up to 1000 psi (70 bars) and are suitable for numerous high-pressure applications. They are terminated with a glass-sealed, MS-type terminal connector. The connector prohibits the core from passing completely through the coil assembly. HCD units have double magnetic shielding that makes them insensitive to external magnetic influences.

  • Hermetically sealed by TIG
  • CE compliant
  • Glass-sealed MS-type connector
  • Calibration certificate supplied with all models
  • Ideal for pressure installations up to 1000 psi (70 bar)
  • Submersible with appropriate connector

Options

  • Metric thread core
  • Guided core
  • Small diameter, low mass core
  • Captive core dor convenient installation

SpecificationsHCD

Supply voltage

±15 VDC (nominal), ±25 mA

Output signal

±10 V

Operating temperature range

0 … +70 °C (+32 …+160 °F)

Survival temperature range

-55 … +95°C (-65 … +200°F)

Null voltage

0 VDC

Ripple

<0.25 mVrms

Linearity

0.25 % full range

Stability

0.125 % full scale

Temperature coefficient of scale factor

0.08 %/°C

Shock survival

250 g for 11 ms ½ sine

Vibration tolerance

10 g to 2 kHz

Coil form material

High density, glass filed polymer

Housing material

AISI 400 stainless steel

Electrical Termination

6-pin connector

Output impedance

<1 Ω

Performance and Electrical Specificationsat 2.5 kHz and room ambient temperature

Modellnummer ]Messbereich, nominal Empfindlichkeit Dyn. Bereich (-3 dB)
 

inch

mm

V/in

V/mm

Hz

050 HCD

±0.050

±1.25

200.0

8.00

500

125 HCD

±0.125

±3.0

80.0

3.00

500

250 HCD

±0.250

±6.0

40.0

1.60

500

500 HCD

±0.500

±12.5

20.0

0.80

200

1000 HCD

±1.000

±25

10.0

0.40

200

2000 HCD

±2.000

±50

5.0

0.20

200

3000 HCD

±3.000

±75

3.3

0.13

200

5000 HCD

±5.000

±125

2.0

0.08

200

10000 HCD

±10.00

±250

1.0

0.04

200

Mechanical Specifications

Dimensions of LVDT HCD

X: mates with Bendix PT06A-10-6S connector (nor included)

Y: 4-40 UNC-2B (Standard) M3 x 0.5 -6H (metric thread core) 0.38 (9.65) minimum depth

Z: nominal center position of core at null

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
 

Body

Core

A (Body)

B (Core)

C

P
 

oz

g

oz

g

inch

mm

inch

mm

inch

mm

inch

mm

050 HCD

1.41

40

0.07

2

2.40

61.0

0.75

19.1

1.90

48.3

0.55

14.0

125 HCD

1.77

50

0.11

3

3.23

82.0

1.25

31.8

2.73

69.3

0.96

24.5

250 HCD

2.19

62

0.18

5

4.10

104.1

2.00

50.8

3.60

91.4

1.39

35.3

500 HCD

2.93

82

0.28

8

5.79

147.1

3.00

96.2

5.29

134.4

2.23

56.5

1000 HCD

4.24

120

0.35

10

8.05

204.5

3.80

96.5

7.55

191.8

3.32

84.3

2000 HCD

6.09

174

0.53

15

11.42

290.1

5.30

127.0

10.92

277.4

5.05

128.3

3000 HCD

8.33

236

0.64

18

16.62

422.1

6.20

157.5

16.10

408.9

7.59

192.8

5000 HCD

10.38

294

0.64

18

20.45

519.5

6.20

157.5

19.95

506.7

9.56

242.8

10000 HCD

18.57

526

0.85

24

34.57

878.1

12.00

304.8

34.03

864.4

16.61

421.9

Wiring

Wiring of LVDT HCD

Connect „B“ and „C“ for differential output.

Ordering Information

Specify the HCA Model followed by the desired option number(s) added together.

Example:
Model Number050 HCA-019 is an HCA Series LVDT with a ±0.05” range (050 HCA), with 10 kHz testing (003), Metric thread core (006), and a guided core (010).

Option number Description

002

5.0 kHz linearity test (1)

003

10.0 kHz linearity test (1)

006

metric thread core

010

guided core

020

small diameter/low mass core (1, 2)

080

mild radiation resistance

200

captive core (3)

(1) Available on models 050HCA, 125HCA, 250HCA and 500 HCA
(2) Dimensions, mass and thread size on request
(3) Available on 050HCA through 3000HCA only

Captive Core OptionFor LVDT Series HCD

Captive core option for LDVT series HCD

These LVDTs feature a captive core design that greatly simplifies installation. T he design utilizes a core rod and bearing assembly that is captured and guided within the LVDT providing low friction travel throughout the stroke length. The assembly incorporates two Delrin bearings on the core rod traveling through the stainless steel boreliner. A bronze bearing on the front end utilizes a self-aligning feature to accommodate lateral LVDT movement during operation, the core rod and bearing assembly is field replaceable.

Dimensions in inches, approx. values. These drawings are for information only and not intended for construction purpose.

Model Linear range Weight, approx. Dimensions, approx.
 

   

A

P

R
 

Inches

mm

oz

g

in

mm

in

mm

in

mm

050 HCD

±0.050

±1.25

2.19

62

2.74

69.6

0.89

22.8

3.78

96.0

125 HCD

±0.125

±3.0

2.65

75

3.57

90.7

1.30

33.0

4.36

110.7

250 HCD

±0.250

±6.0

3.14

89

4.44

112.8

1.73

43.9

4.85

123.2

500 HCD

±0.500

±12.5

4.06

115

6.13

155.7

2.57

65.3

6.04

153.4

1000 HCD

±1.000

±25

5.61

159

8.39

213.1

3.66

89.4

7.90

200.7

2000 HCD

±2.000

±50

7.87

223

11.76

298.7

5.39

113.4

10.52

267.2

3000 HCD

±3.000

±75

10.63

301

16.96

430.8

7.93

201.4

15.27

387.9

3000 HCD

±3,000

±75

10,63

301

16,96

430,8

7,93

201,4

15,27

387,9
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.