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AN509 SCM5B43 - DC LVDT Input Module

From Dataforth Corporation
 

 

Linear variable displacement transducers (LVDTs) provide a method of measuring displacements with very high accuracy and infinite resolution. These type of transducers utilize a precision linear variable differential transformer (also referred to in the industry as LVDT) as a measuring source together with hybrid ICs which include an oscillator, demodulator and filter. This combination provides a self-contained unit that accepts a dc voltage input and provides a dc voltage output relative to armature position.

Until recently, LVDTs were powered from an AC voltage source. One of the major difficulties was providing a stable and accurate AC source and converting the AC output signal back to DC for input to data acquisition systems. This required expensive and bulky external AC excitation power, demodulators and amplification equipment. Development of practical DC powered LVDTs became possible when miniature, high performance, solidstate components became available.

Product Announcements
Trans-Tek, Inc. - Series P010 OEM Oscillator/Demodulator
These PC board-mountable modules offer complete signal conditioning for AC style LVDTs in a small, economical package. The end result is a stable ±5 VDC output signal suitable for input into most A/D... (read more)
Trans-Tek, Inc. - Series 1000 Oscillator/Demodulators
The Series 1000 Oscillator/Demodulators are designed and built to provide DC-in/DC-out operation for AC LVDTs. For additional stability of the output signal, these units are internally regulated. Two... (read more)
Validyne Engineering - CD280 Multi-Channel Carrier Demodulator
The CD280 carrier demodulator is a complete four channel system in a small package. Included is the power supply, carrier oscillator and up to four demodulator cards with zero and span adjustments for... (read more)
Honeywell Sensing and Control / Sensors for Test & Measurement - Custom Linear Position Sensors, All Types
Honeywell Sensing & Control - Sensors for Test & Measurement manufactures a wide range of linear variable displacement transducers (LVDT). LVDT's are manufactured as standard, modified... (read more)
Honeywell Sensing and Control / Sensors for Test & Measurement - Custom Position Probes
Sensotec manufactures a wide range of linear variable displacement transducers (LVDT). LVDT's are manufactured as standard, modified standard, and custom transducers to provide the quickest delivery... (read more)
Honeywell Sensing and Control / Sensors for Test & Measurement - Custom Linear Position Sensors from Honeywell
Honeywell Sensing & Control - Sensors for Test & Measurement manufactures a wide range of linear variable displacement transducers (LVDT). LVDT's are manufactured as standard, modified... (read more)
Macro Sensors, A Division of Howard A. Schaevitz Technologies - AC LVDT Miniature Position Sensor CD 375 -LVDT AC
Macro Sensors' AC-LVDT CD 375 Series of 3/8 inch (9.5 mm) diameter AC-operated LVDTs are small size contactless linear position sensors for both OEM and end user applications. They are available in... (read more)
RDP Electrosense - Compact LVDT
Compact LVDT from RDP Group RDP's DCTH series of DC-DC LVDTs offers ranges up to 0.8 inches (20mm) in a short body length with outputs of 0-10 and +/- 5 volts. Improved linearity and other standard... (read more)
Macro Sensors, A Division of Howard A. Schaevitz Technologies - AC-LVDT Position Sensor PR 812 Series
Macro Sensors' AC-LVDT Position Sensor PR 812 Series of AC LVDTs are 0.812 inch (20.6 mm) diameter versions of the PR 750 Series of general purpose LVDT linear position sensors. They were designed... (read more)
Macro Sensors, A Division of Howard A. Schaevitz Technologies - LVDT Products for Power Generation Applications
Quality products and exceptional customer service are hallmarks of Macro Sensors' relationship with our customers. They receive application guidance and technical support from industry experts who... (read more)
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