Hermetically Sealed Hi-Temp AC-Operated
LVDT Position Sensors
| Input Voltage | 3.0 Vrms (nominal) |
| Input Frequency | 2.5 to 3.0 kHz |
| Linearity Error | < ±0.25% of FRO |
| Repeatability Error | < 0.01% of FSO |
| Hysteresis Error | < 0.01% of FSO |
| Operating Temperature | -65 °F to +400 °F |
| -55 °C to +200 °C | |
| Thermal Coefficient of Sensitivity | -0.01%/°F (nominal) |
| -0.02%/°C (nominal) | |
| Vibration Tolerance | 20 g to 2 kHz |
| Shock Survival | 1000 g, 11 ms |
- Beam scraper positioning feedback
- Hydraulic cylinder position
- Steam valve postioning
- Power generation applications
- Corrosive environments
- Ranges of ±0.05" to ±10" [±1.25 mm to ±250 mm]
- 400°F (200°C) operating temperature
- Environmentally sealed to IEC IP-68
- Non-linearity less than ±0.25% of FRO
- Through-bore design (HSTAR)
- Mating plug for connector included
Macro Sensors’ HSTA and HSTAR 750 Series of 3/4 inch (19 mm) diameter AC-operated LVDTs are designed for a wide range of position measurement applications. These are rugged hermetically sealed sensors, constructed entirely of stainless steel, and intended for use at high temperatures (400°F). The coil windings are sealed against hostile environments to IEC standard IP-68 and electrical termination is through a sealed axial (HSTA) or radial (HSTAR) connector. The radial connector offers two important benefits. First, it results in a through-bore design, which permits access to either or both ends of the LVDT’s core for better mechanical support and core guidance, and easier cleanout in dusty or dirty locations. The second advantage of the radial connector is shorter installed length compared to units of the same range with axial connectors. The mating connector plug is supplied with the unit.
Available in ranges of ±0.050 inch (±1.25 mm) to ±10.0 inches (±250 mm), HSTA/HSTAR 750 Series sensors feature the high resolution, excellent repeatability, and low hysteresis associated with LVDT technology, as well as the highest sensitivity consistent with good linearity. 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 HSTA/HSTAR 750 LVDTs, including Teflon® bore liners and metric threaded cores, as well as smaller diameter and low mass cores. In addition, Macro Sensors can provide a range of mounting accessories and core extension rods. HSTA/HSTAR Series units can also be supplied to withstand exposure to mild radiation (3x107 Rads). On special order, the HSTA/HSTAR 750 Series can be constructed for resistance to mild nuclear radiation, as well as for immersion in pressurized fluids and to withstand higher operating temperatures.
All HSTA/HSTAR 750 Series LVDTs will operate properly with any conventional differential input LVDT signal conditioners, but operation with ratiometric LVDT signal conditioning is not recommended. Macro Sensors offers a full line of LVDT signal conditioners that will deliver optimum performance from any HSTA/HSTAR 750 Series LVDT.
- HSTA 750 Series
- HSTAR 750 Series
| Parameter | Unit of Measure | HSTA 750-050 | HSTA 750-125 | HSTA 750-250 | HSTA 750-500 | HSTA 750-1000 | HSTA 750-2000 | HSTA 750-3000 | HSTA 750-4000 | HSTA 750-5000 | HSTA 750-7500 | HSTA 750-10000 |
| Nominal Range | inches | ± 0.050 | ± 0.125 | ± 0.25 | ± 0.50 | ± 1.00 | ± 2.00 | ± 3.00 | ± 4.00 | ± 5.00 | ± 7.50 | ± 10.00 |
| mm | ± 1.3 | ± 3.0 | ± 6.3 | ± 12.5 | ± 25 | ± 50 | ± 75 | ± 100 | ± 125 | ± 190 | ± 250 | |
| Sensitivity | mV/V/.001 in | 6.1 | 3.9 | 2.4 | 0.63 | 0.61 | 0.37 | 0.25 | 0.17 | 0.12 | 0.11 | 0.07 |
| mV/V/mm | 240 | 154 | 96 | 25 | 24 | 15 | 9.8 | 6.7 | 4.9 | 4.3 | 2.8 | |
| Primary Impedance | ohms | 325 | 735 | 1400 | 1200 | 1250 | 2150 | 2150 | 420 | 600 | 775 | 620 |
| Dimension "A" | inches | 2.01 | 2.64 | 3.35 | 5.92 | 7.38 | 10.91 | 13.65 | 16.17 | 18.65 | 23.85 | 31.66 |
| mm | 51.1 | 67.1 | 85.1 | 150.4 | 187.5 | 277.1 | 346.1 | 411 | 473.7 | 606 | 804 | |
| Dimension "B" | inches | 0.80 | 1.25 | 1.65 | 3.45 | 3.45 | 5.30 | 6.20 | 6.20 | 6.20 | 7.00 | 9.50 |
| mm | 20.3 | 31.7 | 41.9 | 87.6 | 87.6 | 134.6 | 157.5 | 157.5 | 157.5 | 177.8 | 241.3 | |
| Dimension "N" | inches | 0.63 | 0.94 | 1.32 | 2.57 | 3.32 | 5.07 | 6.29 | 7.65 | 8.94 | 11.52 | 15.42 |
| mm | 16 | 24 | 33 | 65 | 84 | 129 | 160 | 194 | 227 | 293 | 392 | |
| Weight - Body | ounces | 1.6 | 2.1 | 2.5 | 3.3 | 4.3 | 6.2 | 8.2 | 9.2 | 10.0 | 14.2 | 18.3 |
| grams | 45 | 59 | 71 | 93 | 122 | 176 | 232 | 260 | 283 | 402 | 519 | |
| Weight - Core | ounces | 0.08 | 0.12 | 0.18 | 0.40 | 0.40 | 0.65 | 0.80 | 0.80 | 0.80 | 0.90 | 1.20 |
| grams | 2.4 | 3.7 | 4.8 | 11.6 | 11.6 | 18 | 22 | 22 | 22 | 25.5 | 34 |
For standard HSTA 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 small diameter core option, add -020 after model number with range.
For mild radiation option, add -080 after model number with range.
For multiple options, add sum of dash numbers after model number with range.
For accessories, please visit the Accessories Page.
Macro Sensors also offers a full line of LVDT signal conditioners, controllers and indicators that deliver optimum performance from any AC operated LVDT. For additional information, please visit the Electronics/Signal Conditioning Page.
| Parameter | Unit of Measure | HSTAR 750-050 | HSTAR 750-125 | HSTAR 750-250 | HSTAR 750-500 | HSTAR 750-1000 | HSTAR 750-2000 | HSTAR 750-3000 | HSTAR 750-4000 | HSTAR 750-5000 | HSTAR 750-7500 | HSTAR 750-10000 |
| Nominal Range | inches | ± 0.050 | ± 0.125 | ± 0.25 | ± 0.50 | ± 1.00 | ± 2.00 | ± 3.00 | ± 4.00 | ± 5.00 | ± 7.50 | ± 10.00 |
| mm | ± 1.3 | ± 3.0 | ± 6.3 | ± 12.5 | ± 25 | ± 50 | ± 75 | ± 100 | ± 125 | ± 190 | ± 250 | |
| Sensitivity | mV/V/.001 in | 6.1 | 3.9 | 2.4 | 0.63 | 0.61 | 0.37 | 0.25 | 0.17 | 0.12 | 0.11 | 0.07 |
| mV/V/mm | 240 | 154 | 96 | 25 | 24 | 15 | 9.8 | 6.7 | 4.9 | 4.3 | 2.8 | |
| Primary Impedance | ohms | 325 | 735 | 1400 | 1200 | 1250 | 2150 | 2150 | 420 | 600 | 775 | 620 |
| Dimension "A" | inches | 2.01 | 2.64 | 3.35 | 5.92 | 7.38 | 10.91 | 13.65 | 16.17 | 18.65 | 23.85 | 31.66 |
| mm | 51.1 | 67.1 | 85.1 | 150.4 | 187.5 | 277.1 | 346.1 | 411 | 473.7 | 606 | 804 | |
| Dimension "B" | inches | 0.80 | 1.25 | 1.65 | 3.45 | 3.45 | 5.30 | 6.20 | 6.20 | 6.20 | 7.00 | 9.50 |
| mm | 20.3 | 31.7 | 41.9 | 87.6 | 87.6 | 134.6 | 157.5 | 157.5 | 157.5 | 177.8 | 241.3 | |
| Dimension "N" | inches | 0.63 | 0.94 | 1.32 | 2.57 | 3.32 | 5.07 | 6.29 | 7.65 | 8.94 | 11.52 | 15.42 |
| mm | 16 | 24 | 33 | 65 | 84 | 129 | 160 | 194 | 227 | 293 | 392 | |
| Weight - Body | ounces | 1.6 | 2.1 | 2.5 | 3.3 | 4.3 | 6.2 | 8.2 | 9.2 | 10.0 | 14.2 | 18.3 |
| grams | 45 | 59 | 71 | 93 | 122 | 176 | 232 | 260 | 283 | 402 | 519 | |
| Weight - Core | ounces | 0.08 | 0.12 | 0.18 | 0.40 | 0.40 | 0.65 | 0.80 | 0.80 | 0.80 | 0.90 | 1.20 |
| grams | 2.4 | 3.7 | 4.8 | 11.6 | 11.6 | 18 | 22 | 22 | 22 | 25.5 | 34 |
For standard HSTAR 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 small diameter core option, add -020 after model number with range.
For mild radiation option, add -080 after model number with range.
For multiple options, add sum of dash numbers after model number with range.
For accessories, please visit the Accessories Page.
Macro Sensors also offers a full line of LVDT signal conditioners, controllers and indicators that deliver optimum performance from any AC operated LVDT. For additional information, please visit the Electronics/Signal Conditioning Page.
