Macro Sensors LVDTs: LVDT Position Sensors AC Operated HSTA 750 Series High Temperature Hermetically Sealed

HSTA 750 Hermetically Sealed AC-LVDT Position Sensors
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Description

Macro Sensors’ HSTA 750 Series of 3/4 inch (19 mm) diameter AC-operated LVDTs is 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 connector. 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 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 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 Series units can also be supplied to withstand exposure to mild radiation (3x107 Rads). On special order, the HSTA 750 Series can also be constructed for immersion in pressurized fluids.

All HSTA 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 750 Series LVDT.

Mechanical Drawing & Wiring Diagrams

HSTA 750 Hermetically Sealed High Temperature AC-LVDT Position Sensors - Mechanical Drawing and Wiring Diagram

Support Electronics

The following Signal Conditioners are compatible with the HSTA 750 LVDT:

Model	Power Input	Output
LVC-2500	10-30 V DC (24 V DC nominal, 100 mA max.) (10 V DC nominal, 160 mA max.)	0 to ±10 V DC, 5 mA max. 0 to 10 V DC, 5 mA max. 4 to 20 mA sourcing into 550 Ohms (max.) loop resistance

The following Digital Panel Meters are compatible with the HSTA 750 LVDT:

Model	Power Input	Output
DMC-A2	115 VAC to 220 V AC or 24 V DC optional	LED Readout, dual channel, 0 to 10 VDC output, Optional RS-232 or Ethernet
DMI-A1	115 V AC to 220 V AC or 24 V DC optional	LED Readout, single channel, 0 to 10 VDC output, Optional RS-232

Ordering Information

• 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 (not available with -080 option).
• 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.


click the image for an enlarged view General Specifications Unit Specifications Mechanical Drawing & Wiring Diagram Support Electronics Ordering Information Tech Bulletin	Description Macro Sensors’ HSTA 750 Series of 3/4 inch (19 mm) diameter AC-operated LVDTs is 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 connector. 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 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 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 Series units can also be supplied to withstand exposure to mild radiation (3x107 Rads). On special order, the HSTA 750 Series can also be constructed for immersion in pressurized fluids. All HSTA 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 750 Series LVDT.	Features Ranges of ±0.050 inch to ±10.0 inches 400°F (200°C) operating temperature In-line connector, mating plug included Environmentally sealed to IEC IP-68 Non-linearity less than ±0.25% of FRO Applications Beam scraper positioning feedback Hydraulic cylinder position Steam valve postioning Power generation applications Corrosive environments