Series 430
0.3” O.D. AC LVDTs
The Series 0430, 0.3” O.D. miniature AC LVDTs offer precision linear displacement measurements for applications with strokes from +/-0.01″ to +/-1.0″. The small size of these transducers make them ideal for weight critical applications and placement in tight spaces. The core is light enough to be used in systems with low driving forces or high accelerations without adversely affecting the system performance.
Key Features
- Ranges from ±0.010″ to 1.0″
- 0.3” Outer Diameter
- Non-linearity <±0.25%
- Carbon Steel Construction
- Lightweight Core Assembly
- Low Temperature Coefficient
TRANSDUCER SPECIFICATIONS
| MODEL | FULL STROKE ± Inches (mm) | * STROKE OVERTRAVEL, Min. Inches (mm) | BODY LENGTH, L, Inches (mm) | CORE P/N | CORE LENGTH, Lc, Inches (mm) | CORE MASS Grams | INPUT IMPEDANCE Ohms | DC INPUT RESISTANCE Ohms | OUTPUT IMPEDANCE Ohms | PHASE ANGLE Degrees |
| 0431-0000 | 0.010 (0.254) | 0.150 (3.81) | 0.85 (21.59) | C005-0158 | 0.45 (11.43) | 0.14 | 149 | 24 | 98 | -6 |
| 0432-0000 | 0.025 (0.635) | 0.150 (3.81) | 0.85 (21.59 | C005-0158 | 0.45 (11.43) | 0.14 | 149 | 24 | 98 | -6 |
| 0433-0000 | 0.050 (1.27) | 0.150 (3.81) | 0.85 (21.59) | C005-0158 | 0.45 (11.43) | 0.14 | 149 | 24 | 98 | -6 |
| 0434-0000 | 0.100 (2.54) | 0.150 (3.81) | 0.95 (24.13) | C005-0157 | 0.55 (13.97) | 0.17 | 318 | 42 | 152 | -5 |
| 0435-0000 | 0.250 (6.35) | 0.600 (15.24) | 2.40 (60.96) | C005-0155 | 1.19 (30.23) | 0.40 | 133 | 15 | 170 | 0 |
| 0436-0000 | 0.500 (12.7) | 0.500 (12.7) | 3.10 (78.74) | C005-0155 | 1.19 (30.23) | 0.40 | 139 | 18 | 124 | 0 |
| 0437-0000 | 1.000 (25.4) | 0.500 (12.7) | 4.30 (109.22) | C005-0155 | 1.19 (30.23) | 0.40 | 245 | 31 | 190 | 5 |
*Monotonic output voltage past each end of linear stroke.
(Specifications at reference frequency)
| MODELS | 0431-0000 | 0432-0000 | 0433-0000 | 0434-0000 | 0435-0000 | 0436-0000 | 0437-0000 |
| NON-LINEARITY | ≤ ± 0.25% FS (Best Fit Straight Line) | ||||||
| REFERENCE FREQUENCY | 7.0kHz Sinusoidal Voltage Excitation | ||||||
| SENSITIVITY, Vin/IN/Vout ±10% | 5.25 | 5.25 | 5.25 | 5.04 | 1.95 | 1.0 | 0.50 |
| INPUT VOLTAGE | 15 VRMS, Max. | ||||||
| NULL VOLTAGE | 0.25% | 0.3% | 0.4% | 0.8% | 1% | 1% | 1% |
| ELECTRICAL CENTER, Ec | 0.385 (9.78) | 0.385 (9.78) | 0.385 (9.78) | 0.435 (11.05) | 1.21 (30.73) | 1.46 (37.08) | 2.06 (52.32) |
| TEMPERATURE COEFFICIENTS | ±0.003% FS/°F | ±0.003% FS/°F | ±0.0012 FS/°F | ±0.0012 FS/°F | ±0.0012 FS/°F | ±0.0012 FS/°F | ±0.0012 FS/°F |
| TEMPERATURE RANGE | -67°F to +257°F (-55°C to +125°C) Operating-67°F to +275°F (-55°C to +135°C) Storage | ||||||
| OUTER HOUSING | DOM 1018 Carbon Steel Housing. | ||||||
| BORE LINER | Torlon | Torlon | Torlon | St. St. 300 | St. St. 300 | St. St. 300 | St. St. 300 |
| CORE | Chrome Plated Iron/Nickel Alloy | ||||||
DIMENSIONAL DIAGRAM
CORE OPTIONS
| MODEL | CORE, OPTION 0 | CORE ASSEMBLY, OPTION 1 |
| 0431-0000_ | C005-0158 | A = 1.075 (27.31), C004-0211 |
| 0432-0000_ | C005-0158 | A = 1.075 (27.31), C004-0211 |
| 0433-0000_ | C005-0158 | A = 1.075 (27.31), C004-0211 |
| 0434-0000_ | C005-0157 | A = 1.575 (40.01), C004-0212 |
| 0435-0000_ | C005-0155 | A = 2.275 (57.79), C004-0213 |
| 0436-0000_ | C005-0155 | A = 2.775 (70.49), C004-0214 |
| 0437-0000_ | C005-0155 | A = 3.875 (98.43), C004-0215 |
SCHEMATIC
The core is constructed from a soft, high permeability iron-nickel alloy. Non-magnetic stainless steel is used as the extension rod material. Core assemblies are sized for use over the maximum working range of the LVDT. The core is drilled at both ends with #72, shown above. Option 0, core only, should be used in applications when a separate extension rod is desirable. Option 1, core assembly, has a #4-40 thread screw brazed to the extension rod which is brazed to the appropriate core.
SERIES 430 MODIFIED FOR USE IN HIGH PRESSURE ENVIRONMENTS
The high pressure version of the Series 430 is suitable for operation in nonconductive and noncorrosive fluids or gasses at pressures up to 5,000 P.S.I. The vented housing eliminates pressure differentials between the environment and the transducer’s interior, allowing rapid and extreme pressure changes without damage or degradation in performance. Refer to the table on the previous page for core options.
| MODEL | STROKE ±Inches (mm) |
| 0431-0001_ | 0.010 (0.254) |
| 0432-0001_ | 0.025 (0.635) |
| 0433-0001_ | 0.050 (1.27) |
| 0434-0001_ | 0.100 (2.54) |
| 0435-0001_ | 0.250 (6.35) |
| 0436-0001_ | 0.500 (12.7) |
| 0437-0001_ | 1.000 (25.4) |
Note: All electrical and physical specifications are the same as the standard Series 430 LVDTs.
SERIES 430 MODIFIED FOR USE IN HIGH TEMPERATURE ENVIRONMENTS
The high pressure version of the Series 430 is suitable for operation in nonconductive and noncorrosive fluids or gasses at pressures up to 5,000 P.S.I. The vented housing eliminates pressure differentials between the environment and the transducer’s interior, allowing rapid and extreme pressure changes without damage or degradation in performance. Refer to the table on the previous page for core options.
| MODEL | STROKE ± Inches (mm) |
| 0431-0002_ | 0.010 (0.254) |
| 0432-0002_ | 0.025 (0.635) |
| 0433-0002_ | 0.050 (1.27) |
| 0434-0002_ | 0.100 (2.54) |
| 0435-0002_ | 0.250 (6.35) |
| 0436-0002_ | 0.500 (12.7) |
| 0437-0002_ | 1.000 (25.4) |
Note: All electrical and physical specifications are the same as the standard Series 430 LVDTs.
CAD DRAWINGS
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