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Macro Sensors has introduced a non-contacting long stroke sensor that operates in rugged environments.

The company said that its LP750 series linear position sensors offer excellent stroke-to-length ratio, making them suitable for long stroke applications.

The LP750 series offers an alternative in place of failing potentiometers in a wide range of industrial position measurement applications.

Constructed entirely of stainless steel, these hermetically sealed, frictionless position sensors can withstand the harsh and corrosive environments found in steel mills, power plants and petrochemical plants.

Their reliability and capacity to withstand high ambient temperatures make them suitable for use in the position feedback of steam control valves in power plants.

LP750 snesors can also be used in petroleum applications to provide down-hole drill head directional drilling position feedback control and valve position.

Units also operate reliably and accurately while buried in oil and under water pressure.

A low operating frequency allows the signal process to be remotely located in applications of high temperature and radiation.

With remote electronics, the linear position sensors can operate in temperatures up to 500F and 30 million Rads.

Offering frictionless position feedback similar to the potentiometer, the LP750 series linear position sensors have no parts that wear out, offering unlimited cycle life.

Units incorporate a digitally-enhanced analogue output with a coil winding configuration that enables a compact design much reduced in size in comparison to an LVDT.

Microprocessor electronics also provide better unit-to-unit consistency and non-linearity.

The sensors are available in standard ranges of 3.75in (95mm) to 24in (600mm) and are offered in three outputs including a 5V DC input with 0.5 to 4.5V DC output, a pre-calibrated, loop-powered 4-20 input/output, or a nominal 24V DC input with 0 to 10V DC output.

The 5V DC input works with micro-controlled systems and allows the signal processing electronics to be located remotely.

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