DWYEROMEGA / OMEGA LDX-3A AC-Powered Signal Conditioner

The DWYEROMEGA LDX-3A is an AC-powered signal conditioner engineered for AC LVDT transducers. It functions as an integrated oscillator and demodulator, delivering transducer excitation at selectable frequencies while conditioning the output signal for direct connection to data acquisition and control instrumentation. The die-cast aluminum enclosure provides mechanical protection and environmental stability across industrial measurement applications.

Technical Specifications Electrical Performance

Input: 120/250 VAC, 50–60 Hz, 4 W maximum consumption

Transducer drive: 3 Vrms output at 2.5 kHz or 5 kHz (field selectable)

Oscillator excitation: 20 mA @ selected frequency

Output modes: ±5 VDC (minimum 10 kΩ load) or ±20 mA (maximum 100 Ω load)

Linearity: 0.05% FS

Output ripple: 10 mV pk/pk at 10 kHz

Output filtering: Second-order low-pass filter selectable at 250 Hz or 110 Hz

Zero adjustment: 0–100% range; span control: 10:1 range; phase: adjustable

Circuit protection: Open and short-circuit protection on both oscillator and output stages

Fuse: 63 mA slow blow Mechanical & Environmental

Enclosure: Die-cast aluminum

Dimensions: 130 mm H × 96 mm W × 35 mm D

Weight: 400 g

Mounting: Fixed via two straps with screws

Connector: 5-pin DIN (transducer interface)

Operating temperature: 0–60°C

Temperature coefficient: 0.02% FS/°C (zero and span) Safety & Compliance

Safety Class 2 per IEC 61010-1

Power supply: EN60950-1 compliant

Low Voltage Directive: 73/23/EEC 1997

EMC: Sensitive to ESD; screened cable with EMC gland recommended

Key Features

Field-selectable carrier frequency (2.5 kHz or 5 kHz) for optimized transducer matching

Dual output modes eliminate external conversion hardware

Phase and zero/span adjustment without external potentiometers

Low power consumption (4 W) suits battery-backed or remote installations

Integrated demodulation reduces system complexity and noise

Compatibility & Integration Compatible with OMEGA LD200, LD300, and LD310 series AC LVDT transducers, plus equivalent AC LVDT devices from other manufacturers. The 5-pin DIN connector accommodates standard transducer terminations. Voltage and current outputs interface directly with PLC analog inputs, data loggers, and signal monitoring equipment. Installation in electrically noisy environments benefits from local earth ground connection.