LVDT AC Excitation Digital Signal Conditioner

Featured Product from Electro Standards Laboratories


Model 4338 CellMite® LVDT with TEDS-Tag® hardware provides AC excitation that is suitable for transducers. (Linear Variable Differential Transformer) The block diagram shows a USB connector for direct connection to a PC.

Model 4338 block Diagram


The Model 4338 CellMite® LVDT with TEDS-Tag® digital signal conditioner connects directly to a standard AC LVDT (Linear Variable Differential Transformer) transducer and simultaneously generates a serial output for connection to a PC and a /-10V analog output. The Model 4338 CellMite® LVDT can be operated with a computer or simply set up by a computer and then used as a stand-alone intelligent LVDT digital signal conditioner with analog output.

The Model 4338 CellMite® LVDT with TEDS-Tag® compensates for transducer nonlinearities using its integrated 6-point calibration capability not found in standard signal conditioners. Its USB port and simple command set allow for connection of multiple units in a serial network configuration. This compact unit is ideally suited for in-situ transducer conditioning and distributed process measurements.

The CellMite® LVDT Model 4338 features include nonvolatile memory for parameter and calibration storage, the ability to select between three stored LVDT calibrations, automatic LVDT identification using TEDS-Tag® technology, multipoint and mV/V calibration, internal generation on precision sine wave AC excitation voltage, remote sense excitation, and 24-bit internal resolution with 16-bit analog output.

CellMite® LVDT 4338 Features:

  • Single Channel (Model 4338)
  • 2-pt, mV/V Calibration
  • 6-pt Linearization Calibration
  • Scalable /-10V Analog Output
  • 16-Bit Analog Output
  • Direct to PC with USB Data
  • 24-Bit Resolution
  • Multiple Filter Selections
  • Storage for 3 Calibrated Transducers
  • Selectable Sensor Gains
  • Optional User Defined Remote feature
  • Remote Sense Excitation
  • Addressable for Serial Network
  • Tare, Peak, Valley
  • Unit Support: In, Cm, mm, %, Lb, Kg, N, mV/V, User Defined
  • TEDS-Tag® Auto Identification
  • Power Supplies Internally Isolated
  • Graphical User Interfaces (GUI) and Software Drivers sold separately. Select from:
    • CellView Lite GUI (Cat. No. 514569)
    • CellView Multi-Display GUI (Cat. No. 514424)
    • CellView with Graphing GUI (Cat. No. 514358)
    • Software Drivers (Cat. No. 514864)

CellMite® 4338 Specifications:Excitation:

  • Voltage: 3kHz, 3Vrms (std)
  • Sensors: LVDT's AC Bridges


  • (1) 8 Pin MiniDIN (F) Connector for Analog Data. Solid State Relay signals, and options.
  • Internal Resolution: 24-bit.
  • Input Range: Software adjustable from <10mV/V to >100mV/V.
  • Conversion Rate: 60 per second.
  • Error: 0.05% /-1 Count.
  • Precision Shunt: 60K Ohms for bridge applications.
  • Pushbutton: Tare, Shunt
  • Indicator: Status LED

Input/Output Connectors:

  • (1) USB Type-B Connector (M) for PC Data.
  • (1) DB9 (F) Connector for Sensor Signals.

Power (Barrel connector, female):

  • Included Adapter: (Cat No 512975) CE, RoHS, and UL listed table mount power module, 100VAC/240VAC, 50Hz/60Hz to 5VDC, 0.5A. Has IEC 60320 C14 inlet. Ideal for international applications. 
  • Optional Adapter: 12, 24, 48 VDC


  • Size: 6.5" x 2.75" x 1.5" (16.5 x 7.0 x 3.8 cm
  • Weight: 1 lb (454 g)

CellView Lite Software for CellMite® Product Line Data Acquisition SoftwareThe CellView Lite Windows-based Software provides an easy graphical user interface (GUI) to CellMite® products.CellView Lite Software Features:

  • Save data, calibration, and sensor test information to Excel spreadsheets.
  • Guides user through sensor calibration.
  • Guides user through adding and removing networked Model 4338 LVDT units.
  • Ability to select any networked Model 4338 unit.
  • Ability to individually name Model 4338 LVDT units.
  • Tare and reset peak and vallley for the sensor.
  • Save/Load the Model 4338 and sensor setup information.
  • Set outoput with user defined 5th order (quadratic filter).
  • Setup a test to start and or stop automatically.
  • Control the Model 4338 solid state output relay switches.
  • User programmable analot output voltage range.
  • Unit of In, Cm, mm, %, Lb, kg, User Defined.
  • Optional User Defined Remote feature.

CellView Multi-Display GUI Software (Cat. No. 514424)

  • Supports mix and match of CellMite® and CellMite® LVDT units on network.
  • Ability to define 8 simultaneous data displays from multiple channels on multiple units.
  • Save data, calibration, and sensor test information to Excel spreadsheets for all networked units.
  • Guides user through sensor calibrations.
  • Guides user through adding/removing networked CellMite® and CellMite® LVDT units.
  • Ability to select and name any networked units.
  • Tare and reset peak and valley for the sensors.
  • Save/Load units and sensor setup information.
  • Set output data with user-define 5th order polynomial function.
  • Setup a test to start and/or stop automatically with user-selectable trigger events and delayed triggering.
  • Multi sample rate data acquisition via user-definable data logging profile.
  • User programmable analog output voltage range for attached CellMite® and CellMite® LVDT units.
  • Units of In, Cm, mm, %, Lb, mV/V and User Defined.

CellView with Graphing GUI (Cat. No. 514358)

Turnkey simultaneous data acquisition system for networked CellMite® and CellMite® LVDT units.

Check out our complete line of CellMite® Intelligent Digital Signal Conditioners!

All ESL products are available for export.