4-Channel RS485 Weight Transmitter for Industrial Weighing

The Laumas TLB4 RS485 Weight Transmitter is designed for reliable connection of up to four load cells in demanding industrial environments. Housed in a compact DIN rail-mountable enclosure, it supports both 6-wire and 4-wire load cells, ensuring accurate signal conditioning and digital conversion via RS485 with Modbus RTU protocol.

With flexible calibration options and wide system compatibility, the TLB4 provides an ideal interface between analogue load cells and digital PLCs or automation platforms, making it well-suited for process control, batching, and automation applications.

Key Features

• Load Cell Input: Supports 4 × 350 Ω load cells (6-wire or 4-wire), up to 16 × 1000 Ω
• Communication: RS485 with Modbus RTU protocol
• Precision: 24-bit ADC with high resolution and stability
• Calibration: Via PC software, keypad, or theoretical input
• Filtering: Digital filter to reduce mechanical vibrations
• Outputs: 2 logic outputs (open collector), 2 logic inputs
• Mounting: DIN rail mounting for easy panel integration

Technical Specifications

• Max Load Cells: 4 × 350 Ω (or equivalent)
• Excitation Voltage: 5 V DC
• Input Sensitivity: 0.5 μV/division
• Conversion Rate: Up to 4800 Hz
• Operating Temperature: –10 °C to +50 °C
• Power Supply: 12–24 V DC
• Protection Rating: IP20 (EN60529)

Downloads & Resources