SARTORIUS MDB-8E Precision Weighing Signal Processing Module

The SARTORIUS MDB-8E is a high-precision weighing signal processing module. Here is its detailed introduction:
I. Core Functions
Sensor Interface and Signal Conversion
Provide a stable excitation voltage (5V or 10V DC selectable) for the weighing sensor, and receive the 1-5 mV/V proportional signal returned by the sensor.
Through low-noise amplification, temperature compensation, digital filtering, and non-linear correction, convert the weak signal into standard industrial signals (4-20mA or 0-10V selectable) for PLC or DCS to collect.
High-precision Signal Processing
Use a 24-bit Σ-Δ type ADC (analog-to-digital converter), with a resolution of over 1/10,000, capable of capturing extremely weak sensor signal changes.
Built-in digital filtering algorithm effectively suppresses common 50/60Hz industrial frequency interference and voltage fluctuations caused by motor start-stop, ensuring smooth and stable output signals.
Reliability and Compatibility
Wide operating temperature range (0°C to +50°C), power input supports 24V DC (allowing a fluctuation range of 18-30V), adaptable to most industrial power supply environments.
Input terminals have overvoltage, reverse connection, and short-circuit protection to prevent wiring errors from damaging the module.
Output Signal Type can be selected through jumper or software configuration as 4-20mA or 0-10V, flexibly adapting to the requirements of different control systems.
Calibration and Maintenance Convenience
Support zero point (Zero Calibration) and full-scale (Span Calibration) adjustments through external potentiometer or digital interface, facilitating on-site calibration.
Some systems support HART communication protocol, allowing remote parameter reading and diagnosis through 4-20mA loop, significantly improving maintenance efficiency.

Technical Specifications
Parameter Name Parameter Value
Product Model MDB-8E
Manufacturer SARTORIUS (Sartorius)
Input Signal 1-5 mV/V (from strain gauge type weighing sensor)
Excitation Voltage 5V or 10V DC (optional)
Output Signal 4-20mA or 0-10V (configurable)
Power Supply Voltage +24V DC (typical value, 18-30V range)
Accuracy ±0.05%FS (full scale)
Non-linearity Error <0.01%FS
Operating Temperature 0°C to +50°C
Storage Temperature -25°C to +70°C
Protection Grade IP20 (module body)
Installation Method DIN rail installation or onboard fixed installation

Application scenario
The MDB-8E is widely used in the industrial weighing field where high precision and stability are required. Typical applications include:
Pharmaceutical industry
Scenarios such as weighing of reaction vessels, quantitative control of filling lines, and raw material feeding require an error of less than 0.1% to avoid batch non-conformity.
Chemical industry
In process industries, material ratio matching and reaction process monitoring rely on high-precision weighing data to achieve closed-loop control.
Food and beverage industry
Weighing of mixing tanks and metering of packaging lines need to meet hygiene-level design requirements and be able to resist humidity and corrosion during cleaning processes.