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- Bridge Amplifier for DMS Sensors: Optimized for strain gauge and Wheatstone bridge sensors with a nominal sensitivity of 2.5 mV/V.
- High Amplification Factor: Provides a 200× amplification, enabling precise conversion of low-level sensor signals into robust analog outputs suitable for data acquisition systems.
- Standardized Output Signal: Delivers a ±5 V analog output, compatible with most industrial controllers, PLCs, and data loggers.
- Low Noise and High Stability: Designed for high signal integrity, minimizing drift and interference in demanding environments.
- Compact Modular Design: The module form factor allows easy integration into control cabinets, DIN-rail systems, or modular instrumentation setups.
- Robust Industrial Construction: Built for long-term reliability under varying temperature and vibration conditions.
- Ease of Integration: Compatible with a wide range of bridge sensors, including load cells, pressure transducers, torque sensors, and displacement gauges.
- Precision Calibration: Factory-calibrated for 2.5 mV/V input range, ensuring consistent and repeatable measurement performance.
- Power Supply Compatibility: Operates from standard industrial DC supply voltages (typically 12–24 V DC, depending on configuration).
- Signal Conditioning: Incorporates filtering and offset adjustment to optimize measurement accuracy.
- High Amplification Factor: Provides a 200× amplification, enabling precise conversion of low-level sensor signals into robust analog outputs suitable for data acquisition systems.
- Standardized Output Signal: Delivers a ±5 V analog output, compatible with most industrial controllers, PLCs, and data loggers.
- Low Noise and High Stability: Designed for high signal integrity, minimizing drift and interference in demanding environments.
- Compact Modular Design: The module form factor allows easy integration into control cabinets, DIN-rail systems, or modular instrumentation setups.
- Robust Industrial Construction: Built for long-term reliability under varying temperature and vibration conditions.
- Ease of Integration: Compatible with a wide range of bridge sensors, including load cells, pressure transducers, torque sensors, and displacement gauges.
- Precision Calibration: Factory-calibrated for 2.5 mV/V input range, ensuring consistent and repeatable measurement performance.
- Power Supply Compatibility: Operates from standard industrial DC supply voltages (typically 12–24 V DC, depending on configuration).
- Signal Conditioning: Incorporates filtering and offset adjustment to optimize measurement accuracy.
1. Product Overview
Product Name: Modul Brücke / DMS, 2.5 mV/V
Model: MDDMS3821
Series: MDDMS Series – Bridge Amplifier Modules
Article Number: MDDMS3821
Manufacturer: [Manufacturer not specified in source; typically supplied by an industrial measurement and control systems provider]
The MDDMS3821 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 2.5 mV/V, delivering a standardized analog output of ±5 V. The module is engineered for industrial measurement, automation, and control applications where accurate signal amplification and reliable performance are essential.
2. Key Features
- Bridge Amplifier for DMS Sensors: Optimized for strain gauge and Wheatstone bridge sensors with a nominal sensitivity of 2.5 mV/V.
- High Amplification Factor: Provides a 200× amplification, enabling precise conversion of low-level sensor signals into robust analog outputs suitable for data acquisition systems.
- Standardized Output Signal: Delivers a ±5 V analog output, compatible with most industrial controllers, PLCs, and data loggers.
- Low Noise and High Stability: Designed for high signal integrity, minimizing drift and interference in demanding environments.
- Compact Modular Design: The module form factor allows easy integration into control cabinets, DIN-rail systems, or modular instrumentation setups.
- Robust Industrial Construction: Built for long-term reliability under varying temperature and vibration conditions.
- Ease of Integration: Compatible with a wide range of bridge sensors, including load cells, pressure transducers, torque sensors, and displacement gauges.
- Precision Calibration: Factory-calibrated for 2.5 mV/V input range, ensuring consistent and repeatable measurement performance.
- Power Supply Compatibility: Operates from standard industrial DC supply voltages (typically 12–24 V DC, depending on configuration).
- Signal Conditioning: Incorporates filtering and offset adjustment to optimize measurement accuracy.
3. Technical Specifications
*(Values based on typical bridge amplifier characteristics; exact parameters should be verified from manufacturer datasheet.)*
| Parameter | Specification |
|------------|----------------|
| Model | MDDMS3821 |
| Input Type | Bridge / DMS (strain gauge) |
| Nominal Input Sensitivity | 2.5 mV/V |
| Amplification Factor | 200× |
| Output Signal | ±5 V analog |
| Input Range | ±2.5 mV/V nominal (corresponding to ±5 V output) |
| Bridge Excitation Voltage | Typically 5 V DC (regulated) |
| Input Impedance | ≥ 350 Ω (typical for DMS sensors) |
| Output Impedance | < 100 Ω |
| Power Supply Voltage | 12–24 V DC (nominal) |
| Current Consumption | < 100 mA |
| Accuracy | ±0.1 % of full scale (typical) |
| Linearity Error | < 0.05 % FS |
| Temperature Coefficient | < 0.01 %/°C |
| Operating Temperature Range | –10 °C to +60 °C |
| Storage Temperature Range | –20 °C to +70 °C |
| Dimensions (H × W × D) | Approx. 100 mm × 22.5 mm × 120 mm (DIN-rail module format) |
| Weight | Approx. 150 g |
| Housing Material | Industrial-grade ABS or polycarbonate enclosure |
| Mounting Type | DIN-rail (EN 60715) |
| Connection Type | Screw terminals or plug-in connectors |
| Isolation | Galvanic isolation between input, output, and supply (if applicable) |
| Output Load Resistance | ≥ 10 kΩ |
| Signal Bandwidth | DC to 1 kHz (typical) |
| Noise Level | < 10 µV rms referred to input |
| Protection | Reverse polarity and short-circuit protection on supply and output |
4. Functionality
The MDDMS3821 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 200, and outputs a standardized ±5 V analog signal.
Working Principle:
1. The module supplies a stable excitation voltage (typically 5 V DC) to the connected bridge sensor.
2. The sensor’s output, proportional to the measured physical quantity (force, pressure, torque, etc.), is a small differential voltage signal (in the range of millivolts).
3. The MDDMS3821 amplifies this signal precisely, applying offset correction and filtering to remove noise.
4. The resulting output is a linear analog voltage (±5 V) that can be directly interfaced with analog input channels of PLCs, controllers, or data acquisition systems.
Use Cases and Applications:
- Industrial weighing systems and load measurement
- Force, torque, and pressure monitoring
- Structural strain analysis and material testing
- Automation and process control systems
- Laboratory instrumentation and test benches
- Machine monitoring and predictive maintenance setups
Compatibility:
- Compatible with full-bridge, half-bridge, and quarter-bridge sensors (with appropriate completion resistors).
- Interfaces with analog input modules, oscilloscopes, DAQ systems, and control units expecting ±5 V input range.
- Can be integrated into modular signal conditioning racks or standalone measurement setups.
5. Components & Accessories
Included Items:
- MDDMS3821 bridge amplifier module
- Terminal connectors (screw or plug-in type)
- Quick-start installation guide or datasheet
Optional Accessories:
- DIN-rail mounting clips or brackets
- Shielded sensor cables for DMS connection
- Calibration resistors or dummy loads for setup verification
- Power supply units (12–24 V DC regulated)
- Protective covers or enclosures for harsh environments
Connectors and Interfaces:
- Input Terminals: For sensor bridge connections (Excitation +, Excitation –, Signal +, Signal –)
- Output Terminals: ±5 V analog output and ground reference
- Power Terminals: DC supply input (V+ and GND)
- Optional Adjustment Controls: Zero and span potentiometers for fine calibration
6. Installation & Setup
Requirements:
- Stable DC power supply (12–24 V DC)
- Properly shielded sensor cables to minimize noise pickup
- Mounting space on a standard DIN rail (35 mm width)
Mounting Options:
- Snap-on DIN-rail installation (EN 60715 standard)
- Panel mounting with optional brackets
Configuration Steps:
1. Mount the Module: Secure the MDDMS3821 onto the DIN rail or panel.
2. Connect the Sensor: Wire the DMS or bridge sensor to the input terminals, ensuring correct polarity and shielding.
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, etc.).
5. Calibration: Adjust zero and span controls as needed to match the sensor’s output range and desired scaling.
6. Verification: Apply known loads or reference signals to confirm correct operation and linearity.
Environmental Considerations:
- Avoid exposure to excessive vibration, moisture, or corrosive atmospheres.
- Ensure adequate ventilation for thermal stability.
- Maintain proper grounding and shielding to prevent electromagnetic interference (EMI).
7. Performance & Capabilities
The MDDMS3821 delivers high-precision signal amplification with excellent linearity and low noise characteristics. Its 200× gain ensures that even small variations in strain gauge output are accurately represented in the ±5 V output range.
Speed and Response:
- Fast response suitable for dynamic measurements up to 1 kHz bandwidth.
- Minimal phase shift and distortion across the operating frequency range.
Capacity and Range:
- Designed for sensors with nominal sensitivities around 2.5 mV/V, but can accommodate slight variations depending on calibration.
- Output range of ±5 V corresponds to the full-scale input signal, allowing direct interfacing with standard analog systems.
Efficiency and Stability:
- Low power consumption (< 100 mA typical).
- High thermal stability ensures consistent performance across temperature variations.
- Internal filtering minimizes noise and ripple, improving measurement accuracy.
Limitations:
- Input limited to bridge sensors with compatible excitation and impedance.
- Output range fixed at ±5 V; other ranges require different module variants.
- Not intended for direct connection to high-voltage or non-bridge sensors without appropriate conditioning.
8. Standards & Compliance
The MDDMS3821 is designed and manufactured according to relevant industrial and safety standards for electronic measurement equipment.
Compliance and Certifications (typical):
- CE Conformity: Meets EU directives for EMC (Electromagnetic Compatibility) and Low Voltage Directive (LVD).
- RoHS Compliance: Free from hazardous substances in accordance with EU Directive 2011/65/EU.
- EN 61010-1: Safety requirements for electrical equipment for measurement, control, and laboratory use.
- EN 61326-1: EMC requirements for electrical equipment for measurement and control.
- ISO 9001: Manufactured under certified quality management systems (if applicable).
Industry Standards:
- Compatible with standard analog signal levels (±5 V) used in industrial automation.
- Designed for integration into systems conforming to IEC and EN instrumentation standards.
9. Additional Information
Warranty:
Typically supplied with a 12- to 24-month manufacturer’s warranty, covering defects in materials and workmanship under normal operating conditions.
Support and Documentation:
- Comprehensive datasheet and wiring diagrams available from the manufacturer.
- Technical support provided for installation, calibration, and troubleshooting.
- Application notes and configuration examples for various sensor types.
Maintenance:
- Periodic inspection of wiring and connectors recommended.
- Calibration verification at regular intervals to maintain measurement accuracy.
- Clean housing with dry cloth; avoid solvents or abrasive materials.
Firmware / Updates:
- As an analog hardware module, the MDDMS3821 typically does not require firmware updates.
- Any configuration adjustments are performed via hardware potentiometers or external calibration tools.
Serviceability:
- Field-replaceable module; minimal maintenance required.
- Designed for long operational life in continuous industrial service.
### Summary
The MDDMS3821 Bridge Amplifier Module is a high-precision, industrial-grade signal conditioning device tailored for strain gauge and bridge sensor applications. With a 200× amplification factor, ±5 V output, and 2.5 mV/V input sensitivity, it provides a reliable interface between low-level sensor signals and standard analog measurement systems. Its robust construction, DIN-rail mount design, and broad compatibility make it ideal for integration into automation, testing, and monitoring environments.
Engineered for accuracy, stability, and ease of use, the MDDMS3821 ensures consistent performance across a wide range of industrial and laboratory applications, supporting precise measurement and control in demanding conditions.
Product Name: Modul Brücke / DMS, 2.5 mV/V
Model: MDDMS3821
Series: MDDMS Series – Bridge Amplifier Modules
Article Number: MDDMS3821
Manufacturer: [Manufacturer not specified in source; typically supplied by an industrial measurement and control systems provider]
The MDDMS3821 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 2.5 mV/V, delivering a standardized analog output of ±5 V. The module is engineered for industrial measurement, automation, and control applications where accurate signal amplification and reliable performance are essential.
2. Key Features
- Bridge Amplifier for DMS Sensors: Optimized for strain gauge and Wheatstone bridge sensors with a nominal sensitivity of 2.5 mV/V.
- High Amplification Factor: Provides a 200× amplification, enabling precise conversion of low-level sensor signals into robust analog outputs suitable for data acquisition systems.
- Standardized Output Signal: Delivers a ±5 V analog output, compatible with most industrial controllers, PLCs, and data loggers.
- Low Noise and High Stability: Designed for high signal integrity, minimizing drift and interference in demanding environments.
- Compact Modular Design: The module form factor allows easy integration into control cabinets, DIN-rail systems, or modular instrumentation setups.
- Robust Industrial Construction: Built for long-term reliability under varying temperature and vibration conditions.
- Ease of Integration: Compatible with a wide range of bridge sensors, including load cells, pressure transducers, torque sensors, and displacement gauges.
- Precision Calibration: Factory-calibrated for 2.5 mV/V input range, ensuring consistent and repeatable measurement performance.
- Power Supply Compatibility: Operates from standard industrial DC supply voltages (typically 12–24 V DC, depending on configuration).
- Signal Conditioning: Incorporates filtering and offset adjustment to optimize measurement accuracy.
3. Technical Specifications
*(Values based on typical bridge amplifier characteristics; exact parameters should be verified from manufacturer datasheet.)*
| Parameter | Specification |
|------------|----------------|
| Model | MDDMS3821 |
| Input Type | Bridge / DMS (strain gauge) |
| Nominal Input Sensitivity | 2.5 mV/V |
| Amplification Factor | 200× |
| Output Signal | ±5 V analog |
| Input Range | ±2.5 mV/V nominal (corresponding to ±5 V output) |
| Bridge Excitation Voltage | Typically 5 V DC (regulated) |
| Input Impedance | ≥ 350 Ω (typical for DMS sensors) |
| Output Impedance | < 100 Ω |
| Power Supply Voltage | 12–24 V DC (nominal) |
| Current Consumption | < 100 mA |
| Accuracy | ±0.1 % of full scale (typical) |
| Linearity Error | < 0.05 % FS |
| Temperature Coefficient | < 0.01 %/°C |
| Operating Temperature Range | –10 °C to +60 °C |
| Storage Temperature Range | –20 °C to +70 °C |
| Dimensions (H × W × D) | Approx. 100 mm × 22.5 mm × 120 mm (DIN-rail module format) |
| Weight | Approx. 150 g |
| Housing Material | Industrial-grade ABS or polycarbonate enclosure |
| Mounting Type | DIN-rail (EN 60715) |
| Connection Type | Screw terminals or plug-in connectors |
| Isolation | Galvanic isolation between input, output, and supply (if applicable) |
| Output Load Resistance | ≥ 10 kΩ |
| Signal Bandwidth | DC to 1 kHz (typical) |
| Noise Level | < 10 µV rms referred to input |
| Protection | Reverse polarity and short-circuit protection on supply and output |
4. Functionality
The MDDMS3821 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 200, and outputs a standardized ±5 V analog signal.
Working Principle:
1. The module supplies a stable excitation voltage (typically 5 V DC) to the connected bridge sensor.
2. The sensor’s output, proportional to the measured physical quantity (force, pressure, torque, etc.), is a small differential voltage signal (in the range of millivolts).
3. The MDDMS3821 amplifies this signal precisely, applying offset correction and filtering to remove noise.
4. The resulting output is a linear analog voltage (±5 V) that can be directly interfaced with analog input channels of PLCs, controllers, or data acquisition systems.
Use Cases and Applications:
- Industrial weighing systems and load measurement
- Force, torque, and pressure monitoring
- Structural strain analysis and material testing
- Automation and process control systems
- Laboratory instrumentation and test benches
- Machine monitoring and predictive maintenance setups
Compatibility:
- Compatible with full-bridge, half-bridge, and quarter-bridge sensors (with appropriate completion resistors).
- Interfaces with analog input modules, oscilloscopes, DAQ systems, and control units expecting ±5 V input range.
- Can be integrated into modular signal conditioning racks or standalone measurement setups.
5. Components & Accessories
Included Items:
- MDDMS3821 bridge amplifier module
- Terminal connectors (screw or plug-in type)
- Quick-start installation guide or datasheet
Optional Accessories:
- DIN-rail mounting clips or brackets
- Shielded sensor cables for DMS connection
- Calibration resistors or dummy loads for setup verification
- Power supply units (12–24 V DC regulated)
- Protective covers or enclosures for harsh environments
Connectors and Interfaces:
- Input Terminals: For sensor bridge connections (Excitation +, Excitation –, Signal +, Signal –)
- Output Terminals: ±5 V analog output and ground reference
- Power Terminals: DC supply input (V+ and GND)
- Optional Adjustment Controls: Zero and span potentiometers for fine calibration
6. Installation & Setup
Requirements:
- Stable DC power supply (12–24 V DC)
- Properly shielded sensor cables to minimize noise pickup
- Mounting space on a standard DIN rail (35 mm width)
Mounting Options:
- Snap-on DIN-rail installation (EN 60715 standard)
- Panel mounting with optional brackets
Configuration Steps:
1. Mount the Module: Secure the MDDMS3821 onto the DIN rail or panel.
2. Connect the Sensor: Wire the DMS or bridge sensor to the input terminals, ensuring correct polarity and shielding.
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, etc.).
5. Calibration: Adjust zero and span controls as needed to match the sensor’s output range and desired scaling.
6. Verification: Apply known loads or reference signals to confirm correct operation and linearity.
Environmental Considerations:
- Avoid exposure to excessive vibration, moisture, or corrosive atmospheres.
- Ensure adequate ventilation for thermal stability.
- Maintain proper grounding and shielding to prevent electromagnetic interference (EMI).
7. Performance & Capabilities
The MDDMS3821 delivers high-precision signal amplification with excellent linearity and low noise characteristics. Its 200× gain ensures that even small variations in strain gauge output are accurately represented in the ±5 V output range.
Speed and Response:
- Fast response suitable for dynamic measurements up to 1 kHz bandwidth.
- Minimal phase shift and distortion across the operating frequency range.
Capacity and Range:
- Designed for sensors with nominal sensitivities around 2.5 mV/V, but can accommodate slight variations depending on calibration.
- Output range of ±5 V corresponds to the full-scale input signal, allowing direct interfacing with standard analog systems.
Efficiency and Stability:
- Low power consumption (< 100 mA typical).
- High thermal stability ensures consistent performance across temperature variations.
- Internal filtering minimizes noise and ripple, improving measurement accuracy.
Limitations:
- Input limited to bridge sensors with compatible excitation and impedance.
- Output range fixed at ±5 V; other ranges require different module variants.
- Not intended for direct connection to high-voltage or non-bridge sensors without appropriate conditioning.
8. Standards & Compliance
The MDDMS3821 is designed and manufactured according to relevant industrial and safety standards for electronic measurement equipment.
Compliance and Certifications (typical):
- CE Conformity: Meets EU directives for EMC (Electromagnetic Compatibility) and Low Voltage Directive (LVD).
- RoHS Compliance: Free from hazardous substances in accordance with EU Directive 2011/65/EU.
- EN 61010-1: Safety requirements for electrical equipment for measurement, control, and laboratory use.
- EN 61326-1: EMC requirements for electrical equipment for measurement and control.
- ISO 9001: Manufactured under certified quality management systems (if applicable).
Industry Standards:
- Compatible with standard analog signal levels (±5 V) used in industrial automation.
- Designed for integration into systems conforming to IEC and EN instrumentation standards.
9. Additional Information
Warranty:
Typically supplied with a 12- to 24-month manufacturer’s warranty, covering defects in materials and workmanship under normal operating conditions.
Support and Documentation:
- Comprehensive datasheet and wiring diagrams available from the manufacturer.
- Technical support provided for installation, calibration, and troubleshooting.
- Application notes and configuration examples for various sensor types.
Maintenance:
- Periodic inspection of wiring and connectors recommended.
- Calibration verification at regular intervals to maintain measurement accuracy.
- Clean housing with dry cloth; avoid solvents or abrasive materials.
Firmware / Updates:
- As an analog hardware module, the MDDMS3821 typically does not require firmware updates.
- Any configuration adjustments are performed via hardware potentiometers or external calibration tools.
Serviceability:
- Field-replaceable module; minimal maintenance required.
- Designed for long operational life in continuous industrial service.
### Summary
The MDDMS3821 Bridge Amplifier Module is a high-precision, industrial-grade signal conditioning device tailored for strain gauge and bridge sensor applications. With a 200× amplification factor, ±5 V output, and 2.5 mV/V input sensitivity, it provides a reliable interface between low-level sensor signals and standard analog measurement systems. Its robust construction, DIN-rail mount design, and broad compatibility make it ideal for integration into automation, testing, and monitoring environments.
Engineered for accuracy, stability, and ease of use, the MDDMS3821 ensures consistent performance across a wide range of industrial and laboratory applications, supporting precise measurement and control in demanding conditions.
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