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Isolated Strain Amplifier/Conditioner for Bridge-type Inputs
Isolated Signal Conditioners with Transducer Power up to 120 mA for Strain Gages, Load Cells and Transducers
- 700 V I/O Isolation
- 1100 V Line Isolation
- Power for Four 350 Ohm Load Cells, Fixed 10 V or Variable 5 to 10 Vdc
- Adjustable Gain and Offset
DMD-476-DC Model Options
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Input Ranges
Output Type
Supply Voltage
Number of Inputs
Input Type
Number of Output
Response Time/Frequency
Supply Voltage Type
The 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 and still achieve 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 (0-10 V or 4-20 mA).
SPECIFICATIONS
Common
Power: 115 Vac ±10 Vac standard or 220 Vac ±10% 50/60 Hz 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
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
SPECIFICATIONS
Common
Power: 115 Vac ±10 Vac standard or 220 Vac ±10% 50/60 Hz 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
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
