Application of ACT Weight Transmitters in Industrial Weighing Systems

ACT Weight Transmitters are critical components in modern industrial weighing systems, acting as the crucial interface between analog load cells and

digital control systems. They are designed to amplify, condition, digitize, and transmit weight signals with high accuracy, reliability, and resilience against

industrial electrical noise.

Their application is fundamental across a vast range of industries, transforming raw mechanical force into stable, usable data for process control, inventory

management, and quality assurance.

1. Core Function and Purpose

The primary role of an ACT Weight Transmitter is to:

• Excitate the Load Cell: Provide a stable, precise DC voltage to power the strain gauge bridge within the load cell(s).

• Receive the Millivolt Signal: Accept the very low-level analog output signal from the load cell (typically in the range of

• a few millivolts per volt of excitation).

• Amplify and Condition: Amplify this weak signal to a stronger, more robust level.

• Convert to Digital: Convert the analog signal to a high-resolution digital value.

• Transmit the Data: Output the weight data via a standard industrial communication protocol to a PLC, SCADA system, PC,

• or dedicated weight indicator.

4. Key Technical Features of Modern ACT Transmitters

• Multi-Cell Support: Ability to connect and sum signals from 1 to 4+ load cells into a single, stable reading.

• Advanced Digital Filtering: Configurable filters to dampen vibrations from machinery, pumps, and conveyors,

• providing a stable weight reading in dynamic environments.

• Multiple Output Options: Standard outputs include:

  • Analog: 4-20mA, ±10V DC.

  • Digital: RS-485 (often with MODBUS RTU protocol), Profibus, DeviceNet, Ethernet/IP.

• Cornerweight Adjustment: Software-based calibration for each connected load cell to ensure scale accuracy.

• High IP Rating (e.g., IP66/67/69K): Allows for installation in harsh, wet, and washdown environments, often directly

• in the field near the load cells.