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Macro Sensors unveils 4-20mA output LVDT signal conditioners

Posted: 25 Apr 2011 ?? ?Print Version ?Bookmark and Share

Keywords:single channel signal conditioner? excitation oscillator frequency?

Broadening its line of single channel signal conditioners, Macro Sensors introduces a mini-module Linear Variable Differential Transformer (LVDT) Signal Conditioner with a low-noise 4-20mA output that supports process control and factory automation applications often requiring longer cabling facilities.

Macro Sensors said the mini-module LVDT signal conditioner operates from +15 to +30VDC power input and provides a low-noise 0�to +10VDC output. Thus, it can be remotely installed by more than 30 meters from the LVDT to facilitate its operation in extreme environments.

The company explained that OEM firms have adopted an analog current of 4-20mA output as its standard to allow users to run longer cables from the sensor to the control system without the worry of noise being induced on the signal or having to calibrate out the voltage drop due to the effects of cabling.

A part of Macro Sensors' EAZY-CAL MMX Series, the LVDT signal conditioner's intuitive user interface utilizes two push buttons�and�four LED�status�indicators�on�the�front�panel,


Macro Sensors said these features guide an operator through the calibration process, and provide what it claims to be foolproof feedback to insure calibration integrity.

In addition, switches, jumpers, and repetitive null and span potentiometer adjustments that are associated with analog?based signal�conditioners�have�also been�removed to make the calibration tool user-friendly and to enable a faster and easier set up.

Aside from these, the EAZY-CAL mini-module LVDT signal conditioner measures just 7 cm x 8.5 cm X 1.8 cm and takes up less space than the standard size, din rail signal conditioners. Macro Sensors claim these qualities make LVDT signal conditioners compact and lightweight, making modules suitable for installation in locations with limited space.

Macro Sensors further claims that its mini-module LVDT signal conditioners were economically priced for the OEM market, saying that its modules support most manufacturers' LVDT position sensors with plug and play compatibility.

For multiple channel applications, Macro Sensors said up to 10 mini-module LVDT signal conditioner modules can be connected together in master/slave mode to synchronize their excitation oscillator frequency, eliminating effects of heterodyning and spurious beat frequency signals, cross talk, and intermodulation effects.

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