An oil storage depot needed reliable measurement of fuel transfers between tanks and to dispatch points, to reconcile inventory and identify losses. Fixed YF-W200D explosion-proof ultrasonic flow meters on the transfer headers provide continuous flow, totals and long-term logged data.
The challenge
- The entire tank-farm transfer area is an explosion-classified zone.
- Inventory reconciliation needs trustworthy inlet and outlet totals.
- Manual gauging alone could not reveal transfer losses in real time.
- Wanted multi-year totalizer history without meter maintenance.
The solution: YF-W200D
The depot installed YF-W200D meters with insertion transducers on the main transfer headers, connected to the depot control system over RS485. Inlet and outlet totals are compared to reconcile each transfer and flag unexpected losses. See the YF-W200D specifications →
- Ex meters cover all hazardous transfer points in the depot.
- Long-term totalizer (512 days / 128 months / 10 years) supports reconciliation.
- 64 power-event records and 32-day status aid anomaly investigation.
- No moving parts means stable accuracy with minimal maintenance.
Configuration used in this application
| Instrument | YF-W200D explosion-proof transit-time ultrasonic flow meter |
|---|---|
| Transducers | Insertion stainless on carbon-steel transfer header |
| Line size / material | DN250 carbon steel |
| Fluid | Gasoline / diesel transfer, ambient temperature |
| Accuracy | ±1% of reading |
| Flow velocity | 0.3–5 m/s |
| Outputs used | RS485 Modbus, pulse; relay for status |
| Data logging | 512-day/128-month/10-year totalizer history |
How it is deployed
- Select transfer headers with stable straight run for transducer mounting.
- Install insertion transducers and seal through Ex glands.
- Mount Ex converters and connect power and RS485 to the control system.
- Commission zero and signal, then map totals to inventory records.
What the operator gets
- Trustworthy inlet/outlet totals for transfer reconciliation.
- Faster identification of inventory discrepancies and losses.
- Multi-year flow history with minimal instrument maintenance.
- Compliant Ex protection across the tank farm.
Frequently asked questions
Can the meter help detect leaks or losses?
Comparing reliable inlet and outlet totals against tank gauging helps operators identify unexpected differences during and after transfer for timely investigation.
How long does the YF-W200D retain totalizer data?
It automatically retains totalizer data for the last 512 days, 128 months and 10 years, plus power-event and working-status records.
Which transducer type is best for a tank-farm header?
Insertion transducers are well suited to larger carbon-steel transfer headers; clamp-on is available where no tapping is desired, and we recommend based on your line and fluid.
Have a similar requirement?
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