Great topic! Instrumentation for oil movement using a tank gauging system plays a key role in ensuring accurate, safe, and efficient measurement and control of oil during storage, transfer, and distribution processes in terminals, refineries, and petrochemical facilities.
✅ What Is Tank Gauging in Oil Movement?
A Tank Gauging System (TGS) is a measurement solution that monitors the level, temperature, volume, pressure, and density of liquids in storage tanks. In oil movement, it ensures accurate custody transfer and inventory management.
✅ Core Instruments Involved:
1. Level Gauges
- Radar Gauges (e.g., Guided Wave or Non-Contact Radar)
Measure tank level with high precision.
Common in modern systems for oil storage tanks.
- Servo Gauges
Provide ultra-precise level and interface measurements (often in custody transfer).
2. Temperature Sensors
- Multi-spot RTDs (Resistance Temperature Detectors)
Monitor product temperature at different heights.
Crucial for volume correction and density calculations.
3. Pressure Sensors / Transmitters
Monitor vapor pressure or product pressure at the bottom of the tank.
Important in pressurized tanks or floating-roof tanks.
4. Tank Side Monitor (TSM)
Interfaces with field instruments and provides local display.
Transmits data to the central control system.
5. Automatic Tank Gauging (ATG) System
Collects, logs, and analyzes all tank data.
Interfaces with the plant’s DCS (Distributed Control System) or SCADA system.
✅ Key Benefits in Oil Movement:
Accurate Volume Measurement: Converts tank levels into standard volume using temperature and density data.
Safety: Prevents spills, overfills, and vapor emissions.
Inventory Control: Real-time tracking of stock levels and movement.
Custody Transfer Accuracy: Reduces disputes and ensures regulatory compliance.
Remote Monitoring: Enables centralized operations and quicker response times.