Omega Products LDX-3A User Manual
AC-POWERED SIGNAL CONDITIONERS
CONNECTIONS AND CONTROL LOCATION
FOR AC LVDTs
PROVIDE TRANSDUCER
EXCITATION AND DC VOLTAGE OR CURRENT OUTPUT
DP25B-E meter.
LDX-3A, shown smaller
than actual size.
LDX-3A
U Works Well with LD200
and LD300 Series
Transducers
U Oscillator/Demodulator
Provides 0.05% FS
Linearity
U Selectable Outputs of
±5 V or ±20 mA
U Interfaces with Standard
H
N
G
Laboratory Instruments
U Adjustable Zero, Span,
and Phase Controls
U Rugged Metal Case
U Transducer Drive: 3 Vrms,
Selectable at 2.5 or 5 kHz
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 device
is housed in a die-cast aluminum
box that provides a high degree
of mechanical and environmental
protection. The LDX-3A
incorporates its own regulation for
operation from AC power of 120V.
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 versatile singlechannel conditioner for a wide
range of transducers.
Connections and Control Locations
SPECIFICATIONS
MECHANICAL
Weight: 400 g (14 oz)
Mounting: 2 fixing straps and screws
Accessories: Connector and
mounting hardware included
Dimensions: 130 H x 96 W x 35 mm D
(5.1 x 3.8 x 1.4")
ELECTRICAL
Power Supply: 120/250 Vac, 50 to 60 Hz
Transducer Drive: 3 Vrms at 2.5 or
5 kHz @ 20 mA
Loading: 4 W max
Fuse Rating: 63 mA slow blow
Oscillator Protection: Open and short
circuit protected
To Order
MODEL NO. DESCRIPTION
LDX-3A AC-powered signal conditioner for AC LVDTs
Comes complete with power cord and operator’s manual.
Ordering Example: LDX-3A, signal conditioner.
VAC
SUPPLY
GAIN (SPAN)
Visit omega.com/ldx-3 for Pricing and Details
±20mA O/P
GROUND
±5V O/P
ZERO
(OFFSET).
1
PRIM.
2
NC
3
4
SEC.
5
TRANSDUCER
Range of Zero Control: 0 to 100%
adjustable
Output Voltage: ±5 V into 10 kΩ min
Output Current: ±20 mA into
100 Ω max
Output Protection: Open and short
circuit protected
Output Ripple: 10 mV p-p at 10 kHz
Output Filter: Second-order low pass
at 250 Hz or 110 Hz
Linearity: 0.05% FS
Temp Range: 0 to 60°C (32 to 140°F)
Temp Coefficient:
Zero: 0.02% FS/°C (0.011% FS/°F)
Span: 0.02%FS/°C (0.011% FS/°F)
Terminations: 5-pin DIN connector
DISPLACEMENT
LD320 sensor.
J
4
5
2
1
2
J-20
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