LVDTs suit nuclear facilities, boilers, and steam turbines.

Press Release Summary:




Resistant to high temperatures and mild radiation, HSTAR 750 Series ¾ in. diameter LVDTs are ac-operated, hermetically sealed sensors available in ranges of ±0.050 to ±10.0 in. with max linearity error of ±0.25% of full range output. Electrical termination is made through sealed radial connector located near one end. Opened at both ends, stainless steel LVDTs can be cleaned of dirt, dust, or other contaminants and will operate with any differential input LVDT signal conditioner.



Original Press Release:



High Temperature/Mild Radiation Resistant LVDTs Ideal for Nuclear Facilities, Boilers, Steam Turbines



Pennsauken, NJ, May 15, 2007...Macro Sensors, (www.macrosensors.com), a sensor company specializing in the manufacture of LVDT-based linear sensors and gaging probes, introduces a new series of high temperature and mild radiation resistant LVDTs. The HSTAR 750 Series of 3/4 inch (19 mm) diameter AC-operated LVDTs are hermetically sealed, stainless steel sensors intended for use in environments with high temperatures (400°F) or mild radiation exposure. Units withstand mild radiation at 3x107 Rads for 40 years. HSTAR linear position sensors are ideal for use in radiation resistant robots, beam scraper positioning feedback, nuclear steam valve positioning as well as power generation applications.

Available in ranges of ±0.050 inch (±1.25 mm) to ±10.0 inches (±250 mm), the 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.

Electrical termination of the HSTAR 750 Series is made through a sealed radial connector located near one end. The mating connector plug is supplied with the unit. A radially-mounted electrical connector permits through-bore operation with these significant results:

o The LVDTs are accessible from both ends, permitting much better mechanical support and core guidance than with blind-bore hermetically sealed units.

o The coil windings are sealed against hostile environments to IEC standard IP-68 and electrical termination is through a sealed radial connector located near one end.

o Open at both ends, the LVDTs can be easily cleaned of grit, dirt, dust or other contaminants for greater reliability and longer life.

o The radial connector makes the installed length of the HSAR LVDTs at least 2" shorter than comparable units with an axially mounted connector for easier installation in tight spaces.

Macro Sensors offers several standard options that permit a user to customize HSTAR 750 LVDTs, including 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. On special order, the HSTAR 750 Series can be constructed for immersion in pressurized fluids.

All HSTAR 750 Series LVDTs will operate properly with any conventional differential input LVDT signal conditioner. Ranges of 1.00 inches or greater will also work with ratiometric LVDT signal conditioning. Macro Sensors offers a full line of LVDT signal conditioners that will deliver optimum performance from any HSTAR 750 Series LVDT.

For information on pricing, please contact Eileen Otto, at 856-662-8000 or by email at sales@macrosensors.com. For complete specifications and schematic drawings on all of
Macro Sensors products, please go to our web site at macrosensors.com/lvdt_macro_sensors/lvdt_products/lvdt_position_sensors/ac_lvdt/free_core_ac/hstar_750_high_temperature.html .

About Macro Sensors
Macro Sensors' extensive line of LVDT-based linear and rotary sensors are used for linear position measurement and feedback in a variety of industrial applications including factory automation, motion control systems, metal fabricating, automotive assembly as well as power plants, gas/steam turbines. Incorporated in 1994, the Company offers more than 200 years of cumulative design and manufacturing experience by its key staff in serving its OEM and end-user international customer base. On June 1, 2005, Macro Sensors was acquired by AST, manufacturer of state-of-the-art (Micro Electro Mechanical Structures) MEMS-based pressure sensors, transducers, and transmitters. Common applications of AST sensor products are in industrial OEM, hydraulic systems, fuel cells, medical gases, HVAC/R, refrigeration, oil & gas exploration/production, and off-road vehicles. For more information on AST products and technology, visit the AST website at www.astsensors.com.

U.S. Route 130 North, Bldg. 22, Pennsauken, NJ 08110-1541
Tel: 856-662-8000 Fax: 856-317-1005

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