Information about LVDT and RVDT Signal Conditioners

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About LVDT and RVDT Signal Conditioners

Linear variable differential transformer (LVDT) and rotary variable differential transformer (RVDT) signal conditioners are devices that translate the linear or rotary movement of a ferromagnetic armature into an AC voltage that is proportional to the armature position. LVDT and RVDT signal conditioners receive AC or DC currents or AC or DC voltages as input signals. They excite a transducer according to defined parameters for voltage and frequency. A variable gain differential amplifier receives the resulting signal, which is then coupled to a synchronous detector, multi-step filter, analog-to-digital converter, and micro-controller. Some LVDT and RVDT signal conditioners have voltage or current outputs that power or activate the sensor that provides the input signals. Other devices use a sampling frequency to convert analog signals to digital values.

Products & Services Related to LVDT and RVDT Signal Conditioners

Analog-to-Digital Converters

Analog-to-digital converters (ADC) sample an analog signal and convert it to a series of digital values to represent the signal to a computer processor.

Bridge Conditioners

Bridge conditioners are instruments that provide excitation and support for strain gages, Wheatstone bridges, load cells, and sensors. They also include circuitry for signal conditioning, amplification, and processing.

Data Acquisition

Data acquisition is the digitizing and processing of multiple sensor or signal inputs for the purpose of monitoring, analyzing and/or controlling systems and processes. Signal conditioning includes the amplification, filtering, converting, and other processes required to make sensor output suitable for rereading by computer boards.

Signal Amplifiers

Signal amplifiers accept signals from sensors and other devices and amplify them to levels suitable for further processing or digitization by computer elements.

Signal Filters

Signal filters block or decrease (attenuate) unwanted frequencies or signal wave characteristics.

Temperature Signal Conditioners

Temperature signal conditioners accept outputs from temperature measurement devices such as resistance temperature detectors (RTDs), thermocouples, and thermistors. They then filter, amplify, and/or convert these outputs to digital signals, or to levels suitable for digitization.

Voltage-to-Frequency Converters

Voltage-to-frequency converters accept a voltage signal and convert its analog level to a signal with a corresponding frequency.