Omega Products DMD-475 User Manual
ISOLATED SIGNAL CONDITIONERS
WITH TRANSDUCER POWER UP TO 120 mA
FOR STRAIN GAGES, LOAD CELLS, AND TRANSDUCERS
DMD-470 Series
Starts at
$
440
⻬ 700V I/O Isolation
⻬ 1100V Line Isolation
⻬ Power for Four 350 Ω
Load Cells, Fixed 10V
or Variable 5 to 10 Vdc
⻬ Adjustable Gain
and Offset
⻬ Large Tare Offset
Adjustment
⻬
6-Wire Bridge Connections
⻬ Voltage or Current Output
Models
DMD-470 Series bridge amplifiers
are AC-powered signal conditioning
modules with triple-isolated voltage
or current outputs for load cells,
bridge-type sensors, and strain
gages. Both models have dual
zero/tare functions. Zero is used for
normal bridge balance, and the tare
feature allows up to 68% of the
input to be offset while still
achieving full output span. The
DMD-475 has an isolated voltage
output; the DMD-476 is similar but
has an isolated 4 to 20 mA output.
Both models have input ranges of
5 to 50 mV for a full scale output
(0 to 10V or 4 to 20 mA).
SPECIFICATIONS
Common
Power: 115 Vac ±10 Vac standard;
220 Vac ±10% 50/60 Hz or 10 to 36 Vdc
@ 0.35 to 0.1A optional
Isolation:
AC Line: 1100 Vrms, 60 pF
Input to Output: 700 Vdc and 60 pF
Operating Temperature:
-25 to 55°C (-13 to 131°F)
Storage Temperature:
-25 to 85°C (-13 to 185°F)
Weight: 510 g (18 oz)
Size: 96 L x 51 W x 73 mm H
(3.75 x 2 x 2.87")
Bridge Supply
Voltage Range: 5 to 10 Vdc
Current Output: 120 mA max
Line and Load Regulation: 0.02% max
Output Noise: 1 mVrms max (120 Hz)
Temp Coefficient: 60 ppm @ 10V,
100 ppm max
DMD-475 (Voltage Output)
Gain Range: 200 to 2000
Input Range for 10V Output:
5 to 50 mV
Linearity: ±0.005% FS
Temperature Stability: 0.005%/°C
Tare Adjustment: -3 to 25 mV
Input Resistance: 1000 MΩ
Output Zero Adjust: 0 to 2V
Output Range: -3 to 10 Vdc
Output Current: 5 mA maximum
Dynamic Response:
DC to -3 dB = 10 Hz, 2 pole
Response Time: 10 to 90% = 35 ms
MOST POPULAR MODELS HIGHLIGHTED!
To Order (Specify Model Number)
MODEL NO. PRICE DESCRIPTION
DMD-475 $460 Voltage output (0 to 10 Vdc), 120 Vac power
DMD-475-220V 460 220 Vac powered DMD-475
DMD-476 460 Current output (4 to 20 mA), 120 Vac power
DMD-476-220V 460 220 Vac powered DMD-476
DMD-476-DC 440 10 to 36 Vdc powered DMD-476
POWER CORD-SE 7 Power cord with stripped end termination
Comes complete with operator’s manual.
Ordering Examples: DMD-475, isolated voltage output (0 to 10 Vdc) amplifier/signal
conditioner module, $460.
DMD-476, isolated current output (4 to 20 mA) amplifier/signal conditioner module, $460.
Recommended Reference Book: Rotordynamics Prediction in Engineering,
CH-4620, $180. See Section Y for Additional Books
DMD-476, $460, shown
smaller than actual size.
DMD-476 (4 to 20 mA Transmitter)
Output: 4 to 20 mA, 0 to 20 mA
Input Range for 16 mA Span:
5 mV min, 50 mV max
Linearity: ±0.01%
Zero Adjust: 0 to ±12 mA
Temperature Stability: 0.005%/°C
Tare Adjustment: -3 to 25 mV
equals 80% of 3 mV/V cell
Input Impedance: 1000 MΩ
Common-Mode Rejection: 100 dB
Common-Mode Input Voltage: 5V
Output Zero Adjust: 0 or 4 mA
Output Range: 4 to 20 mA or 0 to 20 mA
Compliance Voltage: -1 to 20V
Dynamic Response:
DC to -3 dB = 10 Hz, 2 pole
Response Time: 10 to 90% = 35 ms
ACCESSORIES
C
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