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LVDT Position Sensor

LVDT Position Sensor Application Notes. Would you like to discuss an application? Call us today 856-727-0250

Recommendations for DC power supplies and USB-based data acquisition hardware for use with ASG's signal conditioners and DC-operated sensors

DC Power Supplies

There are two distinct types of DC power supplies that convert the AC power line voltage into
DC voltage to operate electronic devices. Linear supplies use a transformer, rectifier diodes, a
regulator, and filtering to produce relatively clean DC, but they are limited to a narrow range of
power input voltages and are usually physically large. Switching supplies offer a wider range
of power input voltages and are usually smaller in size, but often have switching frequency

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GE Position Sensors on Power Gen Turbines

How they work and how to use them with a third-party LVDT signal conditioner designed specifically for Power Gen Applications

LVDTs (Linear Variable Differential Transformers) are very commonly used as position sensors in power plants throughout the world. Working from AC voltages and frequencies not available from power lines, LVDTs require a signal conditioner to provide the necessary operating power. Alliance Sensors Group's model S2A module, designed specifically to be used in power gen applications, is considered by many power gen users be the most advanced and easy to use single channel LVDT signal conditioner on the market today. It can operate practically any inductive or LVDT-type position sensor currently in use.

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AC LVDT Position Sensor Heavy Duty LA-25-A Series

Alliance Sensors Group LA-25-A series LVDT linear position sensors are designed to handle extreme industrial environments. This robust linear sensor has a thick wall aluminum housing (also available in stainless steel), a core enclosed inside of the core extension rod assembly that cannot break loose, while offering a sturdy male thread for easy mechanical connection, and a pair of double contact shaft seals to keep fluids and solid contaminants out of its bore. The sensor’s electrical termination includes the choice of an axial connector or a cord grip with a cable.
An LA-25-A LVDT is ideal for roller gap positioning, head box feedback, process ...

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AC LVDT Linear Position Sensor LA-27-A Series

Alliance Sensors Group LA-27-A series LVDT linear position sensors are designed to handle extreme industrial environments. This robust linear sensor has a thick wall aluminum housing (also available in stainless steel), a core enclosed inside of the core extension rod assembly that cannot break loose, while offering a sturdy male thread for easy mechanical connection, and a pair of double contact shaft seals to keep fluids and solid contaminants out of its bore. The sensor’s electrical termination includes the choice of an axial connector or a cord grip with a cable.
An LA-27-A LVDT is ideal for roller gap positioning, head box feedback, process ...

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AC LVDT Linear Position Sensor LA-9.5 Series

The LA-9.5 series miniature AC-LVDT (Linear Variable Differential Transformer) linear position sensors by H.G. Schaevitz LLC dba Alliance Sensors Group are contactless devices designed for industrial and commercial applications such as factory automation, automotive test stands, solar cell positioners, robotic assembly systems, packaging equipment, and motor sports vehicles. Their compact size, superior performance, and excellent stroke-to-length ratio, make the LA-9.5 AC LVDT sensors ideal for use in test and measurement laboratories, industrial automation equipment, and many OEM positioning applications.


LA-9.5 series AC-LVDTs are ...

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AC LVDT Position Sensor LA-20.6 Series

The LA-20.6 series AC-LVDT (Linear Variable Differential Transformer) linear position sensors by H.G. Schaevitz LLC dba Alliance Sensors Group are contactless devices designed for industrial and commercial applications such as factory automation, metal and paper mills, valve position, robotic assembly systems, and throttle position feedback. This general purpose linear device has excellent price-to-performance and stroke-to-length ratios, making the LA-20.6 AC-LVDTs ideal for use in test and measurement laboratories, industrial automation equipment, and many OEM positioning applications.

LA-20.6 series AC-LVDTs are offered in 11 ranges from ...

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AC LVDT Spring Loaded Linear Position Sensor LAS-19-A Series

The LAS-19-A series AC-LVDT (Linear Variable Differential Transformer) linear position sensors by H.G. Schaevitz LLC dba Alliance Sensors Group are spring loaded, hermetically sealed, contactless devices designed for industrial and commercial applications such as factory automation, metal and paper mills, valve position, robotic assembly systems, pharmaceutical and food manufacturing, and outdoor or wet environment applications. This ruggedized linear device has excellent price-to-performance and stroke-to-length ratios, making the LAS-19-A AC-LVDT sensors ideal for use in power generation and industrial automation equipment, and many OEM positioning ...

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AC LVDT Spring Loaded Position Sensor LAS-19-R Series

The LAS-19-R series AC LVDT (Linear Variable Differential Transformer) linear position sensors by H.G. Schaevitz LLC dba Alliance Sensors Group are spring loaded, hermetically sealed, contactless devices with a radial connector, designed for industrial and commercial applications such as factory automation, metal and paper mills, valve position, various robotic assembly systems, pharmaceutical and food manufacturing, and outdoor or wet environment applications. This ruggedized linear device has excellent price-to-performance and stroke-to-length ratios, making the LAS-19-R AC LVDT sensors ideal for use in power generation and industrial automation ...

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AC LVDT Position Sensor Hermetically Sealed LHA-19-A Series

The LHA-19-A series AC LVDT (Linear Variable Differential Transformer) linear position sensors by H.G. Schaevitz LLC dba Alliance Sensors Group are hermetically sealed, contactless devices designed for industrial and commercial applications such as factory automation, metal and paper mills, valve position, robotic assembly systems, pharmaceutical and food processing, and outdoor wet environment applications. These ruggedized linear devices have excellent price vs performance and stroke-to-length ratio, making the LHA-19-A AC-LVDT sensors ideal for use in power generation and industrial automation equipment, and many OEM positioning ...

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AC LVDT Linear Position Sensor Hermetically Sealed LHA-19-R Series

The LHA-19-R series AC-LVDT (Linear Variable Differential Transformer) linear position sensors by H.G. Schaevitz LLC dba Alliance Sensors Group are hermetically sealed, contactless devices with a radial connector, designed for industrial and commercial applications such as factory automation, metal and paper mills, valve position, robotic assembly systems, pharmaceutical and food manufacturing, and wet environment applications. These ruggedized linear devices have excellent price vs performance and stroke-to-length ratio, making LHA-19-R  AC-LVDT sensors ideal for use in power generation and industrial automation equipment, and many OEM positioning ...

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Heavy Duty LVDTs Avert Emergency Shutdown of Steam Turbine

Alliance Sensors Group’s PG Series LVDTs Prove Their Durability Once Again

The PG series of heavy duty LVDT position sensors from Alliance Sensors Group have become the defacto standard of the power gen industry for measuring steam valve position on power plant turbines, having demonstrated outstanding performance, reliability, and durability over many years of operation.
These LVDTs ’ robust construction is clearly illustrated by the following pictures from a power plant in which the failure of the anti-rotation mechanism on the shaft of the hydraulic actuator operating a modulating steam valve while the turbine was operating resulted in extreme misalignment of the LVDTs’ extension rods, as shown in Figure 1 below.


Figure 1 Extension rods of LVDTs severely misaligned after anti-rotation device on cylinder shaft failed.

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Our Technical Support Staff:  We have more than 150 years and three generations in the position sensor business and are expert application engineers at what we sell. We have real world experience and know how to solve your measurement challenges. Need technical help with your measurement application? Call us today 856-727-0250. 

Our Web Site: We are constantly improving our website and adding new sensors to our product offerings.

 

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Distributors For:

HGSI Temperature Sensing Products

Temperature Sensing Products

Have a Question?

Need pricing or have questions about a product?

Speak to an experienced application engineer at H. G. Schaevitz Alliance Sensors Group by calling us at 856-727-0250 or contact us by clicking here.

We will provide you with fast reliable service the first time you call.

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