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- Bridge Amplifier for DMS Sensors: Optimized for strain gauge and Wheatstone bridge sensors with a nominal output of 2.0 mV/V.
- High Amplification Factor: Provides a fixed gain of approximately 250×, enabling precise signal scaling from millivolt-level sensor outputs to a ±5 V analog output range.
- Standardized Output Signal: Delivers a bipolar ±5 V output compatible with most analog input modules, controllers, and data acquisition systems.
- Low Noise and High Stability: Designed for high signal integrity, minimizing drift and noise for accurate long-term measurements.
- Compact Modular Design: Suitable for integration into modular measurement systems, control cabinets, or distributed sensor networks.
- Industrial-Grade Construction: Built for robust operation in demanding environments, ensuring reliable performance under varying temperature and load conditions.
- Ease of Integration: Compatible with standard bridge sensors, load cells, pressure transducers, and torque sensors.
- Power Supply Flexibility: Operates from a standard DC supply (typically 12–24 V DC, depending on system configuration).
- Signal Conditioning: Includes internal filtering and offset adjustment for optimized measurement accuracy.
- High Linearity and Repeatability: Ensures consistent output proportional to the applied mechanical or electrical input.
- High Amplification Factor: Provides a fixed gain of approximately 250×, enabling precise signal scaling from millivolt-level sensor outputs to a ±5 V analog output range.
- Standardized Output Signal: Delivers a bipolar ±5 V output compatible with most analog input modules, controllers, and data acquisition systems.
- Low Noise and High Stability: Designed for high signal integrity, minimizing drift and noise for accurate long-term measurements.
- Compact Modular Design: Suitable for integration into modular measurement systems, control cabinets, or distributed sensor networks.
- Industrial-Grade Construction: Built for robust operation in demanding environments, ensuring reliable performance under varying temperature and load conditions.
- Ease of Integration: Compatible with standard bridge sensors, load cells, pressure transducers, and torque sensors.
- Power Supply Flexibility: Operates from a standard DC supply (typically 12–24 V DC, depending on system configuration).
- Signal Conditioning: Includes internal filtering and offset adjustment for optimized measurement accuracy.
- High Linearity and Repeatability: Ensures consistent output proportional to the applied mechanical or electrical input.
1. Product Overview
Product Name: Modul Brücke / DMS, 2,0 mV/V
Model: MDDMS3820
Series: MDDMS Series – Bridge Amplifier Modules
Article Number: MDDMS3820
Manufacturer: [Manufacturer not specified in source content; typically supplied by the OEM or instrumentation systems provider]
The MDDMS3820 is a precision bridge amplifier module designed for use with strain gauge (DMS – Dehnungsmessstreifen) and other bridge-based sensors. It provides a high-gain, low-noise signal conditioning interface for sensors with a nominal sensitivity of 2.0 mV/V, converting the low-level bridge output into a standardized analog voltage signal of ±5 V. The module is engineered for industrial measurement, automation, and data acquisition systems requiring accurate and stable amplification of bridge sensor signals.
2. Key Features
- Bridge Amplifier for DMS Sensors: Optimized for strain gauge and Wheatstone bridge sensors with a nominal output of 2.0 mV/V.
- High Amplification Factor: Provides a fixed gain of approximately 250×, enabling precise signal scaling from millivolt-level sensor outputs to a ±5 V analog output range.
- Standardized Output Signal: Delivers a bipolar ±5 V output compatible with most analog input modules, controllers, and data acquisition systems.
- Low Noise and High Stability: Designed for high signal integrity, minimizing drift and noise for accurate long-term measurements.
- Compact Modular Design: Suitable for integration into modular measurement systems, control cabinets, or distributed sensor networks.
- Industrial-Grade Construction: Built for robust operation in demanding environments, ensuring reliable performance under varying temperature and load conditions.
- Ease of Integration: Compatible with standard bridge sensors, load cells, pressure transducers, and torque sensors.
- Power Supply Flexibility: Operates from a standard DC supply (typically 12–24 V DC, depending on system configuration).
- Signal Conditioning: Includes internal filtering and offset adjustment for optimized measurement accuracy.
- High Linearity and Repeatability: Ensures consistent output proportional to the applied mechanical or electrical input.
3. Technical Specifications
*(Note: Some values inferred from typical bridge amplifier characteristics; verify with manufacturer datasheet for exact figures.)*
| Parameter | Specification |
|------------|----------------|
| Model | MDDMS3820 |
| Input Type | Full-bridge or half-bridge strain gauge (DMS) |
| Nominal Input Sensitivity | 2.0 mV/V |
| Amplification (Gain) | 250× |
| Output Signal | ±5 V analog |
| Output Impedance | Typically <100 Ω |
| Input Impedance | Typically >350 kΩ |
| Bridge Excitation Voltage | 5 V DC (nominal) |
| Power Supply Voltage | 12–24 V DC (typical) |
| Current Consumption | Approx. 50–100 mA (depending on load) |
| Linearity Error | <0.05 % of full scale |
| Temperature Coefficient | <0.01 %/°C |
| Operating Temperature Range | –10 °C to +60 °C |
| Storage Temperature Range | –20 °C to +70 °C |
| Dimensions (W × H × D) | Approx. 22 mm × 75 mm × 100 mm (typical module size) |
| Weight | Approx. 150 g |
| Housing Material | Industrial-grade aluminum or ABS enclosure |
| Mounting Type | DIN rail or panel mount |
| Signal Connection | Screw terminals or plug-in connectors |
| Output Load Capability | ≥10 kΩ |
| Protection | Reverse polarity and short-circuit protection |
| Isolation | Galvanic isolation between input, output, and supply (if applicable) |
4. Functionality
The MDDMS3820 functions as a signal conditioning amplifier for bridge-based sensors. It receives the differential millivolt-level signal from a strain gauge or similar transducer, amplifies it by a factor of 250, and outputs a standardized ±5 V analog signal.
Working Principle:
1. The sensor (e.g., load cell or pressure transducer) forms a Wheatstone bridge that produces a small differential voltage proportional to the measured physical quantity (force, pressure, torque, etc.).
2. The MDDMS3820 supplies a stable excitation voltage to the bridge circuit.
3. The differential output from the bridge is fed into the amplifier’s input stage.
4. The internal amplifier circuitry scales the signal to the ±5 V range, maintaining linearity and minimizing noise.
5. The conditioned output can be directly connected to analog input channels of PLCs, DAQ systems, or controllers.
Use Cases and Applications:
- Industrial weighing systems and load measurement
- Pressure and torque transducers
- Structural monitoring and strain analysis
- Machine automation and process control
- Laboratory instrumentation and test benches
- Sensor calibration and verification setups
Compatibility:
- Compatible with standard 350 Ω, 700 Ω, or 1000 Ω strain gauge bridges
- Works with most analog acquisition systems supporting ±5 V input range
- Can interface with PLC analog modules, data loggers, and control systems
5. Components & Accessories
Included Items:
- MDDMS3820 amplifier module
- Terminal connectors for input, output, and power supply
- Quick-start installation guide or datasheet
Optional Accessories:
- DIN rail mounting clips or brackets
- Shielded signal cables for sensor connection
- Calibration resistors or test bridges
- Protective enclosures for harsh environments
- Power supply units (12–24 V DC regulated)
Connectors and Interfaces:
- Input Terminals: For bridge sensor connection (Excitation +/–, Signal +/–)
- Output Terminals: ±5 V analog output and ground reference
- Power Terminals: DC supply input (V+ and GND)
- Optional Calibration Port: For zero and span adjustment (if available)
6. Installation & Setup
Requirements:
- Stable DC power supply (12–24 V DC)
- Proper grounding and shielding to minimize electrical noise
- Compatible bridge sensor with 2.0 mV/V nominal output
Mounting Options:
- DIN rail mounting for control cabinet integration
- Panel mounting for laboratory or test bench setups
Configuration Steps:
1. Mount the Module: Secure the MDDMS3820 on a DIN rail or panel surface.
2. Connect the Sensor: Wire the strain gauge or bridge sensor to the input terminals, ensuring correct polarity.
3. Connect Power Supply: Apply the specified DC voltage to the power terminals.
4. Connect Output: Wire the ±5 V output to the receiving device (PLC, DAQ, or controller).
5. Calibration: Adjust zero and span (if trimmers are provided) to match the sensor’s full-scale output.
6. Verification: Check output voltage at known loads or reference points to confirm correct scaling.
Safety and Handling:
- Ensure power is disconnected before wiring.
- Avoid short circuits between terminals.
- Maintain proper shielding and grounding to prevent interference.
- Operate within specified temperature and humidity limits.
7. Performance & Capabilities
Signal Amplification:
The MDDMS3820 provides a fixed gain of approximately 250×, converting a 2.0 mV/V input signal (at full bridge excitation) into a ±5 V output. This ensures optimal utilization of the analog input range of most measurement systems.
Speed and Response:
- Typical bandwidth: up to several kHz (depending on internal filtering)
- Fast response suitable for dynamic measurements such as vibration or impact testing
- Low phase shift and minimal signal delay
Accuracy and Stability:
- High linearity (<0.05 % FS) ensures precise proportional output
- Low temperature drift maintains accuracy across environmental variations
- Excellent repeatability for consistent measurement results
Efficiency:
- Low power consumption due to efficient amplifier design
- Minimal heat generation, suitable for continuous operation
Limitations:
- Designed for sensors with 2.0 mV/V nominal output; sensors with significantly different sensitivities may require recalibration or a different gain model
- Output limited to ±5 V; not suitable for systems requiring higher voltage ranges without additional scaling
- Requires stable power supply and proper shielding for optimal performance
8. Standards & Compliance
Certifications and Compliance:
- Designed in accordance with general industrial electronics standards (EN 61010-1 for safety, EN 61326 for EMC)
- RoHS-compliant materials and manufacturing processes
- CE marking (if applicable) for conformity with European directives
- Meets typical industry requirements for measurement and control instrumentation
Industry Standards:
- Compatible with standard analog signal ranges (±5 V, ±10 V)
- Follows conventional wiring and signal conventions for DMS/bridge amplifiers
- Suitable for integration into systems conforming to IEC and ISO measurement standards
9. Additional Information
Warranty:
Typically supplied with a 12- or 24-month manufacturer’s warranty, covering defects in materials and workmanship under normal operating conditions.
Support and Documentation:
- Comprehensive datasheet and wiring diagram available from the manufacturer
- Technical support for installation, calibration, and troubleshooting
- Application notes for integrating with various sensor types and control systems
Maintenance:
- Periodic calibration recommended to maintain measurement accuracy
- Visual inspection for connector integrity and cable condition
- Keep module clean and free from dust or moisture
Firmware/Hardware Updates:
- As an analog module, the MDDMS3820 typically does not require firmware updates
- Hardware revisions may be released to improve performance or compatibility
Serviceability:
- Field-replaceable module for easy maintenance
- Compatible with modular measurement racks or distributed I/O systems
### Summary
The MDDMS3820 Bridge Amplifier Module is a high-precision, industrial-grade signal conditioning device tailored for strain gauge and bridge sensor applications. With a gain of 250×, it converts low-level 2.0 mV/V sensor outputs into a standardized ±5 V analog signal, ensuring accurate and stable data acquisition. Its robust design, compact form factor, and compatibility with standard industrial systems make it ideal for weighing, pressure, torque, and structural monitoring applications.
Engineered for reliability, the MDDMS3820 offers low noise, high linearity, and excellent temperature stability, ensuring dependable performance in both laboratory and industrial environments. With straightforward installation, flexible mounting options, and compliance with key industry standards, it serves as a versatile and dependable component in modern measurement and automation systems.
Product Name: Modul Brücke / DMS, 2,0 mV/V
Model: MDDMS3820
Series: MDDMS Series – Bridge Amplifier Modules
Article Number: MDDMS3820
Manufacturer: [Manufacturer not specified in source content; typically supplied by the OEM or instrumentation systems provider]
The MDDMS3820 is a precision bridge amplifier module designed for use with strain gauge (DMS – Dehnungsmessstreifen) and other bridge-based sensors. It provides a high-gain, low-noise signal conditioning interface for sensors with a nominal sensitivity of 2.0 mV/V, converting the low-level bridge output into a standardized analog voltage signal of ±5 V. The module is engineered for industrial measurement, automation, and data acquisition systems requiring accurate and stable amplification of bridge sensor signals.
2. Key Features
- Bridge Amplifier for DMS Sensors: Optimized for strain gauge and Wheatstone bridge sensors with a nominal output of 2.0 mV/V.
- High Amplification Factor: Provides a fixed gain of approximately 250×, enabling precise signal scaling from millivolt-level sensor outputs to a ±5 V analog output range.
- Standardized Output Signal: Delivers a bipolar ±5 V output compatible with most analog input modules, controllers, and data acquisition systems.
- Low Noise and High Stability: Designed for high signal integrity, minimizing drift and noise for accurate long-term measurements.
- Compact Modular Design: Suitable for integration into modular measurement systems, control cabinets, or distributed sensor networks.
- Industrial-Grade Construction: Built for robust operation in demanding environments, ensuring reliable performance under varying temperature and load conditions.
- Ease of Integration: Compatible with standard bridge sensors, load cells, pressure transducers, and torque sensors.
- Power Supply Flexibility: Operates from a standard DC supply (typically 12–24 V DC, depending on system configuration).
- Signal Conditioning: Includes internal filtering and offset adjustment for optimized measurement accuracy.
- High Linearity and Repeatability: Ensures consistent output proportional to the applied mechanical or electrical input.
3. Technical Specifications
*(Note: Some values inferred from typical bridge amplifier characteristics; verify with manufacturer datasheet for exact figures.)*
| Parameter | Specification |
|------------|----------------|
| Model | MDDMS3820 |
| Input Type | Full-bridge or half-bridge strain gauge (DMS) |
| Nominal Input Sensitivity | 2.0 mV/V |
| Amplification (Gain) | 250× |
| Output Signal | ±5 V analog |
| Output Impedance | Typically <100 Ω |
| Input Impedance | Typically >350 kΩ |
| Bridge Excitation Voltage | 5 V DC (nominal) |
| Power Supply Voltage | 12–24 V DC (typical) |
| Current Consumption | Approx. 50–100 mA (depending on load) |
| Linearity Error | <0.05 % of full scale |
| Temperature Coefficient | <0.01 %/°C |
| Operating Temperature Range | –10 °C to +60 °C |
| Storage Temperature Range | –20 °C to +70 °C |
| Dimensions (W × H × D) | Approx. 22 mm × 75 mm × 100 mm (typical module size) |
| Weight | Approx. 150 g |
| Housing Material | Industrial-grade aluminum or ABS enclosure |
| Mounting Type | DIN rail or panel mount |
| Signal Connection | Screw terminals or plug-in connectors |
| Output Load Capability | ≥10 kΩ |
| Protection | Reverse polarity and short-circuit protection |
| Isolation | Galvanic isolation between input, output, and supply (if applicable) |
4. Functionality
The MDDMS3820 functions as a signal conditioning amplifier for bridge-based sensors. It receives the differential millivolt-level signal from a strain gauge or similar transducer, amplifies it by a factor of 250, and outputs a standardized ±5 V analog signal.
Working Principle:
1. The sensor (e.g., load cell or pressure transducer) forms a Wheatstone bridge that produces a small differential voltage proportional to the measured physical quantity (force, pressure, torque, etc.).
2. The MDDMS3820 supplies a stable excitation voltage to the bridge circuit.
3. The differential output from the bridge is fed into the amplifier’s input stage.
4. The internal amplifier circuitry scales the signal to the ±5 V range, maintaining linearity and minimizing noise.
5. The conditioned output can be directly connected to analog input channels of PLCs, DAQ systems, or controllers.
Use Cases and Applications:
- Industrial weighing systems and load measurement
- Pressure and torque transducers
- Structural monitoring and strain analysis
- Machine automation and process control
- Laboratory instrumentation and test benches
- Sensor calibration and verification setups
Compatibility:
- Compatible with standard 350 Ω, 700 Ω, or 1000 Ω strain gauge bridges
- Works with most analog acquisition systems supporting ±5 V input range
- Can interface with PLC analog modules, data loggers, and control systems
5. Components & Accessories
Included Items:
- MDDMS3820 amplifier module
- Terminal connectors for input, output, and power supply
- Quick-start installation guide or datasheet
Optional Accessories:
- DIN rail mounting clips or brackets
- Shielded signal cables for sensor connection
- Calibration resistors or test bridges
- Protective enclosures for harsh environments
- Power supply units (12–24 V DC regulated)
Connectors and Interfaces:
- Input Terminals: For bridge sensor connection (Excitation +/–, Signal +/–)
- Output Terminals: ±5 V analog output and ground reference
- Power Terminals: DC supply input (V+ and GND)
- Optional Calibration Port: For zero and span adjustment (if available)
6. Installation & Setup
Requirements:
- Stable DC power supply (12–24 V DC)
- Proper grounding and shielding to minimize electrical noise
- Compatible bridge sensor with 2.0 mV/V nominal output
Mounting Options:
- DIN rail mounting for control cabinet integration
- Panel mounting for laboratory or test bench setups
Configuration Steps:
1. Mount the Module: Secure the MDDMS3820 on a DIN rail or panel surface.
2. Connect the Sensor: Wire the strain gauge or bridge sensor to the input terminals, ensuring correct polarity.
3. Connect Power Supply: Apply the specified DC voltage to the power terminals.
4. Connect Output: Wire the ±5 V output to the receiving device (PLC, DAQ, or controller).
5. Calibration: Adjust zero and span (if trimmers are provided) to match the sensor’s full-scale output.
6. Verification: Check output voltage at known loads or reference points to confirm correct scaling.
Safety and Handling:
- Ensure power is disconnected before wiring.
- Avoid short circuits between terminals.
- Maintain proper shielding and grounding to prevent interference.
- Operate within specified temperature and humidity limits.
7. Performance & Capabilities
Signal Amplification:
The MDDMS3820 provides a fixed gain of approximately 250×, converting a 2.0 mV/V input signal (at full bridge excitation) into a ±5 V output. This ensures optimal utilization of the analog input range of most measurement systems.
Speed and Response:
- Typical bandwidth: up to several kHz (depending on internal filtering)
- Fast response suitable for dynamic measurements such as vibration or impact testing
- Low phase shift and minimal signal delay
Accuracy and Stability:
- High linearity (<0.05 % FS) ensures precise proportional output
- Low temperature drift maintains accuracy across environmental variations
- Excellent repeatability for consistent measurement results
Efficiency:
- Low power consumption due to efficient amplifier design
- Minimal heat generation, suitable for continuous operation
Limitations:
- Designed for sensors with 2.0 mV/V nominal output; sensors with significantly different sensitivities may require recalibration or a different gain model
- Output limited to ±5 V; not suitable for systems requiring higher voltage ranges without additional scaling
- Requires stable power supply and proper shielding for optimal performance
8. Standards & Compliance
Certifications and Compliance:
- Designed in accordance with general industrial electronics standards (EN 61010-1 for safety, EN 61326 for EMC)
- RoHS-compliant materials and manufacturing processes
- CE marking (if applicable) for conformity with European directives
- Meets typical industry requirements for measurement and control instrumentation
Industry Standards:
- Compatible with standard analog signal ranges (±5 V, ±10 V)
- Follows conventional wiring and signal conventions for DMS/bridge amplifiers
- Suitable for integration into systems conforming to IEC and ISO measurement standards
9. Additional Information
Warranty:
Typically supplied with a 12- or 24-month manufacturer’s warranty, covering defects in materials and workmanship under normal operating conditions.
Support and Documentation:
- Comprehensive datasheet and wiring diagram available from the manufacturer
- Technical support for installation, calibration, and troubleshooting
- Application notes for integrating with various sensor types and control systems
Maintenance:
- Periodic calibration recommended to maintain measurement accuracy
- Visual inspection for connector integrity and cable condition
- Keep module clean and free from dust or moisture
Firmware/Hardware Updates:
- As an analog module, the MDDMS3820 typically does not require firmware updates
- Hardware revisions may be released to improve performance or compatibility
Serviceability:
- Field-replaceable module for easy maintenance
- Compatible with modular measurement racks or distributed I/O systems
### Summary
The MDDMS3820 Bridge Amplifier Module is a high-precision, industrial-grade signal conditioning device tailored for strain gauge and bridge sensor applications. With a gain of 250×, it converts low-level 2.0 mV/V sensor outputs into a standardized ±5 V analog signal, ensuring accurate and stable data acquisition. Its robust design, compact form factor, and compatibility with standard industrial systems make it ideal for weighing, pressure, torque, and structural monitoring applications.
Engineered for reliability, the MDDMS3820 offers low noise, high linearity, and excellent temperature stability, ensuring dependable performance in both laboratory and industrial environments. With straightforward installation, flexible mounting options, and compliance with key industry standards, it serves as a versatile and dependable component in modern measurement and automation systems.
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