AST Macro Sensors - A Division of Howard A. Schaevitz Technologies Inc. - LVDT  Based Position Sensors and Support Electronics - Pennsauken, NJ, Phone: 856-662-8000, email: lvdts@macrosensors.com
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HSD 750 Series Hermetically Sealed DC Operated LVDT Position Sensors

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HSD 750 Hermetically Sealed DC-LVDT Position Sensors
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Description

Macro Sensors’ HSD 750 Series of 3/4 inch (19 mm) diameter DC-operated LVDT is designed for a wide range of position measurement applications. These are rugged hermetically sealed sensors, constructed entirely of stainless steel, and intended for general industrial use. The coil windings are sealed against hostile environments to IEC standard IP-68 and electrical termination is through a sealed axial connector. The mating connector plug is supplied with the unit.

HSD 750 Series sensors use built-in electronics to provide the desirable features of an LVDT, such as frictionless operation and dynamic response, with the added convenience and simplicity of DC input and precalibrated DC output. They are designed to operate in conjunction with PLCs, digital indicators, A/D converters, computer-based data processors and QC data collection systems.

Available in ranges of ±0.050 inch (±1.25 mm) to ±10.0 inches (±250 mm), the HSD 750 Series sensors feature the high resolution, excellent repeatability, and low hysteresis associated with LVDT technology. Their exceptional reliability is a result of manufacturing processes and assembly techniques developed and optimized by Macro Sensors over many years of manufacturing LVDT sensors. The maximum linearity error for any of these sensors is ±0.25% of full range output using a statistically best-fit straight line derived by the least squares method.

Macro Sensors offers several standard options that permit a user to customize HSD 750 LVDTs, including Teflon® bore liners and metric threaded cores. In addition, Macro Sensors can provide mounting accessories, core extension rods, and DC power supplies.

Features

Ranges of ±0.050 inch to ±10.0 inches

In-linel connector, mating plug included

Environmentally sealed to IEC IP-68

±15 V DC input, precalibrated 0 to ±10 V DC output

Non-linearity less than ±0.25% of FRO

Applications

Machine tool positioners

Materials testing extensometers

Hydraulic cylinder position

Valve position sensing

Automatic assembly equipment

Corrosive environments

GENERAL SPECIFICATIONS

Input Power
±15 V DC, ± 25 mA
Full Scale Output
0 to ±10 V DC
Output Noise & Ripple
<10 mVrms
Frequency Response (-3dB)
250 Hz (nominal)
Linearity Error
<±0.25% of FRO
Repeatability Error
<±0.01% of FSO
Hysteresis Error
<±0.01% of FSO
Operating Temperature
0°F to +160°F
Operating Temperature
-20°C to +70°C
Thermal Coefficient of Scale Factor
-0.015%/°F (nominal)
Thermal Coefficient of Scale Factor
-0.027%/°C (nominal)
Vibration Tolerance
20 g to 2 kHz
Shock Survival
100 g, 11 ms
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UNIT SPECIFICATIONS

PARAMETER
UNIT OF MEASURE
HSD 750
-050
HSD 750
-125
HSD 750
-250
HSD 750
-500
HSD 750
-1000
HSD 750
-2000
HSD 750
-3000
HSD 750
-5000
HSD 750
-7500
HSD 750
-10000
Nominal Range
Inches
±0.050
±0.125
±0.25
±0.50
±1.00
±2.00
 ±3.00
±5.00
±7.50
 ±10.00
Nominal Range
Millimeter
±1.25
±3.0
±6.3
±12.5
±25
±50
 ±75
±125
±190
 ±250
Scale Factor
V/Inch
200
80
40
20
10
5.0
3.3
2.0
1.33
1.0
Scale Factor
V/Millimeter
8.0
3.3
1.6
0.8
0.4
0.2
0.13
0.08
0.05
0.04
Dimension "A"
Inches
2.86
3.48
4.24
6.74
8.24
11.21
14.49
19.49
25.00
32.38
Dimension "A"
Millimeter
72.5
88.3
107.7
171.2
209.3
284.7
368.0
495.0
635.0
822.5
Dimension "B"
Inches
0.80
1.25
1.65
3.45
3.45
5.30
6.20
6.20
7.00
9.50
Dimension "B"
Millimeter
20.3
31.7
41.9
87.6
87.6
134.6
157.5
157.5
177.8
241.3
Dimension "N"
Inches
0.63
1.13
1.35
2.57
3.33
5.07
6.45
8.95
11.52
15.42
Dimension "N"
Millimeter
16.0
28.8
33.8
65.4
84.6
128.8
163.8
227.3
292.6
391.6
Weight, Body
Ounces
1.9
2.5
3.1
4.1
4.9
8.3
10.3
12.1
16.3
20.4
Weight, Body
Grams
54
68
80
114
140
236
292
342
462
579
Weight, Core
Ounces
0.08
0.12
0.18
0.40
0.40
0.65
0.80
0.80
0.90
1.20
Weight, Core
Grams
2.4
3.7
4.8
11.6
11.6
18.0
22.0
22.0
25.5
34.0
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Mechanical Drawing & Wiring Diagrams

HSD 750 Hermetically Sealed DC-LVDT Position Sensors - Mechanical Drawing and Wiring Diagram

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Ordering Information

• For standard HSD 750, order by model number with range.
• For metric threaded core option, add -006 after model number with range.
• For Teflon® bore liner option, add -010 after model number with range.
• For both options, add -016 after model number with range.
• For accessories, please visit the accessories page.

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