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LVDT Position Sensor FAQ

LVDT Position Sensor FAQ Do you have questions relating to LVDT Position Sensors? Call us today 856-727-0250

GE Position Sensors for Power Generation Turbines

By: Ed Herceg  Chief Technology Officer 

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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 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 Posiiton Sensor LA-19-A Series

The LA-19-A 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 engine throttle position feedback. These general purpose linear position sensing devices have excellent price-to-performance and stroke-to-length ratios, making the LA-19-A AC-LVDT sensors ideal for use in test and measurement laboratories, industrial automation equipment, and many OEM positioning sensing applications.

LA-19-A series AC-LVDTs ...

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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 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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4 to 20 mA Current Loops Made Easy

Understanding current loop output sensors

For analog sensor data transmission, a 4-20 mA current loop is a very common method to convey the sensor data acquired. Sensors or transducers are usually designed to measure a range of values of the measured parameter, which is known as the measurand. The measurand value must be converted to current within the measuring device in such a way that the current in the loop will be proportional to the measurand value. The range of the loop current, 4 mA to 20 mA, is called the span of the transmitter. The transmitter is typically configured so that one end point of the measurement value will correspond to 4 mA and the other end point value measured will correspond to 20 mA.

The 4-20 mA current loop has become the standard for signal transmission and electronic control in most analog control systems. A 4-20mA current loop circuit is shown in Figure 1. In a current loop, the current is drawn from a DC loop power supply, then flows through the transmitter using field wiring connected to a loop load resistor in the receiver or controller, and then back to the loop supply, with all elements being connected in a series circuit. All current-loop-based measuring systems use at least these four elements.

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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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