Omega Products LDX-4 User Manual
DC-POWERED SIGNAL CONDITIONER
LDX-4 CONNECTIONS AND CONTROL LOCATIONS LINE ART
PROVIDES TRANSDUCER EXCITATION AND SELECTABLE ANALOG
OUTPUTS; WORKS WITH LD320 SERIES TRANSDUCERS
LDX-4
DP2000-P digital display.
DISPLACEMENT
LDX-4, shown
smaller than
actual size.
LD320
U Operates on 10 to 30 Vdc
U +5V, ±10V, or 20 mA
Selectable Outputs
U Adjustable Zero and Span
U High-Accuracy Oscillator/
Demodulator Circuits
Provide 3V @ 5 kHz
The LDX-4 is a DC-powered signal
conditioning amplifier and power
supply for AC LVDTs. Its compact,
rugged case can withstand industrial
installations and protect laboratorygrade electronics. Complete zero
and span adjustments allow use
0V
SPECIFICATIONS
Supply Voltage: 10 to 30 Vdc
Supply Current (Voltage Output):
140 mA max with 10 Vdc supply
voltage; 60 mA max with 30 Vdc
supply voltage
Supply Current (Current Output):
180 mA max with 10 Vdc supply voltage;
70 mA max with 30 Vdc supply voltage
Noise on Power Supply (Typical):
20 mV p-p @ 100 kHz
Input Protection: Overvoltage,
reverse connection
Transducer Energization:
3 Vrms @ 5 kHz
Transducer Range: 45 to 450 mV/V
full scale
CONNECTIONS AND CONTROL LOCATIONS
ZERO SPAN
with any LVDT with an output
between 45 and 450 mV/V full scale.
Selectable outputs of ±5V or ±10V
interface with recorders, displays,
and other instruments. For the ±5V
output range, a second 0 to 20 mA
signal can be used to retransmit the
signal over long distances.
To Order
MODEL NO. DESCRIPTION
LDX-4 10 to 30 Vdc powered signal conditioner for AC LVDTs
Comes complete with operator’s manual.
Ordering Example: LDX-4, 10 to 30 Vdc powered signal conditioner for AC LVDTs.
Visit omega.com/ldx-4 for Pricing and Details
1
PRIMARY
0V
V OUT
2
NC
3
I OUT
4
SECONDARY
5V
10V
5
TRANSDUCER
Output Voltage (Selectable): ±5 Vdc
or ±10 Vdc full scale
Load Resistance: 1 kΩ minimum
Analog Output Current: 20 mA full
scale into 1500 Ω maximum (only with
5 V range selected)
Offset Range: 0 to 100%
Gain Temperature Coefficient:
<200 ppm/°C
Output Temperature Coefficient:
<200 ppm/°C output
Noise: <20 mV p-p @ 10 to 100
kHz Non-Linearity: <0.1% BSL
Temperature Range: 0 to 60°C
(-18 to 140°F)
Weight (Approx.): 300 g (11 oz)
Dimensions: 40 W x 65 H x 120 mm L
(1.57 x 2.56 x 4.72")
J
J-X
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