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High Accuracy OEM Position Transducer for Electro-Hydraulic Proportional Valves

Advanced Technology Front Loaders Use LVDT in Electro-Hydraulic Steering System

A novel LVDT with interchangeable core has been designed and developed to accurately measure the position of an Electro-Hydraulic servo-valve for monitoring and closed-loop control of hydraulic systems for rough environment of off-road vehicles.  This rugged, high accuracy LVDT measures the spool position of a proportional electro-hydraulic servo-valve, and will ensure safe operation of front loaders by immediately detecting faults.  It includes a microprocessor for self-diagnostic, fault detection, and temperature & linearity correction.

This extremely rugged, highly accurate, analog transducer features digital calibration of the voltage output, digital linearity correction, and temperature compensation using unique technology.  The total error band over this temperature range is typically 1%, including probe interchangeability (a great feature in hydraulic systems as the LVDT can be replaced without the need for bleeding) over an operating temperature range of -40ºC to +120ºC.  The robust transducer is designed to function with hydraulic pressure applied to the stainless steel front face and spool tube, which are joined by a weld to form a pressure isolation tube.

Versions with 4-20mA output, CAN-OPEN or other standard communication protocols based on specific customer needs can be provided.  We can also easily provide mechanical packages adapted to your needs— for example, for high volume applications using plastic molded housings for even lower costs.

The software includes a self diagnostic sequence at power on, which allows testing the electronic circuit before it is integrated into the assembly and during field use.  It also performs monitoring functions to signal faults and failures to the system with which it interfaces.

For lower volume applications, we also have a full line of catalog transducers and signal conditioners, some of which are designed for operation in pressure media such, as hydraulic fluids or others.  These products are often customized to OEM customer applications.

For more information on Measurement Specialties solutions, please send an email to MyFeedback@dee-inc.com.  DEE is a Trusted Supplier and Expert in providing Cost Savings, Fast Multiple Solution Options, Supplier Reduction, and Time Savings.  We Help Manufacturers Find Solutions and Exceed Their Goals.™


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