The LDX-4 is a dc powered signal conditioning amplifier and power supply for ac LVDT's. Its compact, rugged case can withstand industrial installations and protect laboratory grade electronics. Complete zero and span adjustments allow the LDX-4 to be used with any LVDT with an output between 45 and 450 mV/V full scale. Selectable outputs of ±5 V or ±10 V interface with recorders, displays, and other instruments. Also, when using the ±5 V output range, a second 0 - 20 mA signal is available for retransmitting the signal over long distances.

The LDX-2 linear displacement transmitter is a two-wire, 4 to 20 mA conditioner for ac LVDT transducers. It is designed for use where long transmission distances are required before the signal can interface with a controller or meter. A feature of two-wire operation is its low susceptibility to noise and cable resistance, making it ideal for industrial environments. Two-wire operation enables both power and signal to use the same pair of wires.

The LDX-3A is a compact oscillator/ demodulator unit with adjustable span, zero and phase controls for use with any OMEGA® (as well as most other manufacturers) ac LVDT transducers. The unit is housed in a die-cast aluminum box providing a high degree of mechanical and environmental protection. The LDX-3A incorporates its own regulation for operation from ac power of 120 V. A 2.7 m (9') power cable is standard. The unit can drive outputs of 0 to ±5 V into 10 kΩ, or ±20 mA into 100 Ω max. This, together with a 10:1 range of span controls, makes the LDX-3A a very versatile single-channel conditioner for a wide range of transducers.