Key Components of Emerson Rosemount AMS 6500 ATG System

Emerson Rosemount AMS 6500 ATG System is a modular automatic tank gauging system whose key components work in concert to achieve precise inventory management, leak detection, and safety monitoring.

Below is a detailed introduction to its core key components:

Key Components of the AMS 6500 ATG System

1. Core Processing Unit (The Brain)

Model: A6500-UM (Universal Measurement Card)

Function: This is the core and brain of the entire system. It is installed on the main baseplate and is responsible for:

Polling and receiving data from all tank gauge sensors connected to its ports.

Performing all core calculations, such as level, temperature, water interface, density, volume, and mass.

Executing leak test calculations and alarm management.

Storing system configuration and each tank’s strapping table.

2. Communication Interface Unit (The Messenger)

Model: A6500-CC (Communication Card)

Function: This serves as the gateway connecting the system to the external world. It provides multiple industrial protocols to send processed data to upper-level systems.

Supported Protocols: Modbus TCP/IP, Modbus RTU, EtherNet/IP, OPC DA/UA, etc.

Connection Targets: Factory DCS, SCADA systems, inventory management software, or cloud platforms.

3. Power Supply Module (The Heart)

Function: Provides stable and reliable power supply to all modules in the AMS 6500 rack (UM card, CC card, I/O modules, etc.). It typically supports wide voltage input (e.g., 24V DC or 110/230V AC) and offers redundant backup options to ensure uninterrupted system operation.

4. Input/Output (I/O) Modules (The Limbs)

Function: Used to expand the system’s control and external signal capabilities.

Digital Input (DI): Receives external switch status signals, such as pump operation status or valve feedback.

Digital Output (DO) / Relay Output: Controls external devices, such as starting/stopping pumps, switching valves, or triggering audible/visual alarms.

Analog Input (AI): Receives additional analog signals, such as 4-20mA signals from pressure transmitters or density meters.

5. Local Display Unit (HMI)

Model: A6500-LCU (Local Control Unit)

Function: An optional but highly practical touchscreen display mounted on the cabinet door or near the field. It provides:

Local Human-Machine Interface (HMI): Operators can view real-time data, alarm statuses, and historical trends for all tanks on-site.

Local Configuration and Debugging: Engineers can easily perform system settings and diagnostics without connecting a computer.

6. Tank-Top Sensors (The Eyes and Skin)

These are field instruments installed on each tank, serving as the source of data.

Level Transmitters: Such as the renowned Rosemount 5900S radar level gauge for precise level measurement.

Temperature Sensors: Multi-point thermometers (e.g., average temperature sensors) or single-point sensors for measuring product temperature.

Water Interface Sensors: Detect the presence and height of free water at the tank bottom (interface measurement).

Pressure Transmitters: Measure tank internal pressure (especially critical for pressurized tanks or volatile liquids).

Other Instruments: Such as density meters, level switches, etc.

7. Rack and Baseplate

Function: All modules (UM card, CC card, power supply, I/O modules) are mounted on standard rails and plugged into a main baseplate. The baseplate provides the internal data bus and power distribution between modules.

8. Software (The Nervous System)

Raptor Configuration Software:

Function: A PC-based tool used to configure, set up, monitor, and diagnose the entire AMS 6500 system. Through it, engineers can add tanks, load strapping tables, set alarm limits, configure communication protocols, and view system status.

Summary and Relationships

You can understand their relationships as follows:

Tank-top sensors (eyes) collect raw data.

Data is transmitted via cables to the cabinet.

The A6500-UM core card (brain) processes and interprets this data.

I/O modules (limbs) execute control actions as needed.

The A6500-CC communication card (messenger) reports the processed information to the central control room (SCADA/DCS).

The power supply module (heart) provides energy to all components.

Engineers interact with the system via the LCU local display or Raptor software.

All these components together form a powerful, reliable, and flexible tank gauging management system. For procurement and spare parts, as mentioned earlier, suppliers like CW Green Tech typically stock these key components (especially UM cards, CC cards, power supplies, and LCUs).