SARTORIUS MDB-5E

Technical Specifications

• Load Cell Channel Capacity: Single independent strain gauge load cell input channel
• Supported Load Cell Excitation: 5 VDC precision regulated excitation voltage
• Maximum Supported Load Cell Sensitivity: 0.5 mV/V – 3.0 mV/V strain gauge range
• Weight Measurement Internal Resolution: 24-bit high precision analog-to-digital conversion
• Digital Communication Interface: RS485 Modbus RTU industrial serial communication
• Operating Supply Input Voltage: 24 VDC nominal (18 VDC – 30 VDC wide tolerance range)
• Operating Temperature Range: -10 °C to +45 °C
• Protection Enclosure Rating: IP30 dust-resistant plastic housing

Functional Features

1. Automatic digital tare zero calibration function with software-stored tare offset values
2. Configurable digital weight filtering algorithms to suppress mechanical weighing vibration noise
3. Multi-point linearity calibration correction for non-linear load cell output characteristics
4. Modbus RTU register mapping for direct weight value access by PLC / DCS automation controllers
5. Built-in load cell wire break, short circuit and overload diagnostic fault detection

Performance Parameters

• Weight measurement linearity error: ≤ ±0.0015% full scale load cell capacity
• Vibration filter adjustable bandwidth: 0.1 Hz – 50 Hz software selectable
• ADC sampling conversion rate: 1200 samples per second continuous weight acquisition
• Long-term measurement drift: ≤ ±0.0008% full scale per 24-hour continuous operation
• Communication baud rate configurable: 9600 / 19200 / 38400 / 57600 bps Modbus RTU

Material Composition

• Outer enclosure: High-impact ABS flame retardant plastic housing, UL94 V-0 fire rating
• Precision weighing PCB: Low-temperature-drift ceramic substrate signal conditioning board
• Load cell terminal connectors: Gold-plated copper spring-clamp terminal blocks
• Mounting base: Reinforced glass fiber plastic DIN rail mounting bracket

Structural Characteristics

• Standard DIN rail mounting form factor (35 mm top-hat industrial DIN rail compatible)
• Front panel dual LED indicators: green power running status, red weighing fault alarm
• Removable top cover providing access to load cell wiring and communication terminal ports
• Compact single-width DIN module dimension for dense cabinet installation layouts

Working Principle

Advantage Highlights

1. Ultra-high 24-bit ADC resolution delivers micro-precision weight measurement for high-accuracy dosing applications
2. Wide adjustable digital vibration filtering adapts weighing measurement to high-vibration factory production environments
3. Multi-point linearity correction eliminates weight reading offset across full load cell capacity range
4. Standard Modbus RTU communication enables seamless integration with all mainstream industrial PLC and DCS control platforms
5. Integrated load cell diagnostic functions reduce weighing system troubleshooting labor hours

Applicable Industries

Installation Requirements

1. Mount module exclusively on standard 35 mm top-hat DIN mounting rail inside control cabinet
2. Route load cell wiring as shielded 4-wire strain gauge dedicated signal cable; shield grounded single-side only
3. Separate load cell low-level signal wiring by minimum 25 cm distance from high-current AC power cables
4. 24 VDC power supply input must provide filtered DC output with maximum ripple voltage ≤ 50 mV peak-to-peak
5. Maintain minimum 15 mm horizontal clearance between adjacent DIN rail modules for passive heat dissipation

Usage Precautions

1. Do not exceed maximum 3.0 mV/V load cell sensitivity rating for connected strain gauge transducers
2. Avoid mounting module directly adjacent to high heat generating electrical components (contactors, transformers)
3. Disconnect load cell wiring terminals before executing factory calibration reset procedures
4. Prevent liquid ingress or conductive dust accumulation inside IP30 rated enclosure housing
5. Execute full multi-point linear calibration after load cell replacement or field wiring modification