Sartorius MDB-5E Precision Weighing Module
The Sartorius MDB-5E is a precision weighing signal processing module from Sartorius AG, designed for high-accuracy industrial weighing applications. This module belongs to the MDB series and provides reliable signal conditioning for strain gauge type weighing sensors in pharmaceutical, chemical, and food industries.
Signal Processing Architecture
The MDB-5E provides a stable excitation voltage (5V or 10V DC selectable) for weighing sensors and receives the 1-5 mV/V proportional signal from the sensor. Through low-noise amplification, temperature compensation, digital filtering, and non-linear correction, it converts the weak signal into standard industrial signals (4-20mA or 0-10V selectable) for PLC or DCS collection. The module utilizes a 24-bit Σ-Δ type ADC with resolution exceeding 1/10,000, capable of capturing extremely weak sensor signal changes.
Technical Specifications
The 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. The module features a wide operating temperature range of 0°C to +50°C, with power input supporting 24V DC (allowable fluctuation range of 18-30V). Input terminals include overvoltage, reverse connection, and short-circuit protection to prevent wiring errors from damaging the module.
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: +24V DC (18-30V range)
Accuracy: ±0.05% FS
Non-linearity Error:<0.01% FS
Operating Temperature: 0°C to +50°C
Protection Grade: IP20
Application Domains
The MDB-5E is widely used in industrial weighing fields requiring high precision and stability. Typical applications include: Pharmaceutical industry (weighing of reaction vessels, quantitative control of filling lines, raw material feeding with error less than 0.1%), Chemical industry (material ratio matching and reaction process monitoring using closed-loop control), Food and beverage industry (weighing of mixing tanks and metering of packaging lines).
Calibration and Maintenance
The module supports zero point and full-scale 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. Installation options include DIN rail mounting or onboard fixed installation.
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