Precalibrated Position Sensor (Frictionless and Hermetically Sealed) Serves as Long-life Potentiometer Replacement

Released on: February 12, 2008, 6:17 am

Press Release Author: Macro Sensors

Industry: Electronics

Press Release Summary: Macro Sensors, (, a sensor company
specializing in the manufacture of Linear Position and LVDT-based linear sensors and
gaging probes, has designed a position sensor that is hermetically sealed,
frictionless and will serve as a long-life replacement for failing potentiometers in
a wide range of industrial position measurement applications such as machine tool
positioning, hydraulic cylinder positioning, valve position sensing and automatic
assembly equipment.

Press Release Body: Offering frictionless position feedback similar to the
potentiometer, the LP750 Series position sensors have no parts that wear out,
offering unlimited cycle life and greater performance than a potentiometer. Unique
coil winding configuration and digitally enhanced analog output enable a compact
design, making units ideal for use in applications with limited installation space.

Constructed entirely of stainless steel, these hermetically sealed sensors are
sealed against hostile environments to IEC standard IP-68. The LP750 position
sensors can, therefore, withstand the harsh and corrosive environments found in
steel mills, power plants and petrochemical plants. For example, the LP750 position
sensors' reliability and capacity to withstand high ambient temperatures make them
ideal for use in the position feedback of steam control valves in power plants while
their significant stroke to length advantage and environmental robustness in
environmental extremes enables their use in cylinders implemented in hydraulic rams
such as those found in construction equipment. The LP750 position sensors can also
be used in petroleum applications to provide down-hole drill head directional
drilling position feedback control and valve position.

Electrical termination through a sealed radial connector permits access to either or
both ends of the unit for better mechanical support and guidance. It also makes
position sensors easier to clean out and provides for a shorter installed length
compared to units of the same range with an axial connection.

The LP Series position sensors are available in standard ranges of 4" (100 mm) to
25" (600 mm) and are offered in a precalibrated loop-powered 4-20 input/output or a
nominal 24V DC input 0 to 10 V DC output. In addition to providing a high stroke to
length ratio, high resolution, excellent repeatability and low hysteresis, these
position sensors have a maximum linearity error of +/-0.25% of full-scale output.

For more information, please refer to our web site at
or contact the factory at

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

Web Site:

Contact Details: U.S. Route 130 North, Bldg. 22, Pennsauken, NJ 08110-1541

Tel: 856-662-8000 Fax: 856-317-1005

  • Printer Friendly Format
  • Back to previous page...
  • Back to home page...
  • Submit your press releases...