4-Channel RS485 Weight Transmitter for Industrial Weighing

The Laumas TLB4 RS485 Weight Transmitter is engineered for connecting up to 4 load cells in demanding industrial environments. Housed in a slim DIN rail-mountable enclosure, the TLB4 supports both 6-wire and 4-wire load cells, enabling accurate signal conditioning and digital conversion over RS485 with Modbus RTU protocol.

Equipped with flexible calibration options and wide compatibility, the TLB4 offers an ideal interface between analogue load cells and digital PLCs or automation systems.

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