Signal Conditioner for LVDT

LiM-420 – Current Output, LVDT/RVDT OEM Signal Transmitter

• Low cost OEM 4-20mA (3-wire) transmitter
• Very compact, open PC board design
• DIP switch selectable coarse gain
• Zero and span adjustment potentiometers
• 18 to 30VDC supply voltage -25^o to +85^oC operating temperature range
• Card-edge or barrier strip connections
• Works with very low input impedance LVDTs and RVDTs

Description

The LiM-420 is an LVDT/RVDT signal conditioning transmitter specifically designed for the OEM marketplace.
Operating on an 18 to 30VDC unipolar supply voltage, the LiM-420 delivers a low noise 4 to 20mA output signal.
Compatible with many 5 and 6 electrical connection LVDT and RVDT transducers (see specifications), this compact transmitter provides excellent performance on a budget. A generous excitation drive current of 20mA, allowing operation with transducer input impedances as low as 175 Ohms.

Features

• Low cost/high performance
• Wide operating temperature range
• Six selectable gain ranges
• 20-turn zero & gain adjustment potentiometers
• Threaded standoffs for panel/box mounting

Applications

• Valve position feedback
• Roller gap sensing
• Paper head box position
• Coater knife gap
• Materials testing machines