DP Level & Flow
What this tool does
Liquid height from gauge pressure, specific gravity, blanket pressure, and the height of the tap. This page says what the tool is for, in plain language. The working formula stays on the signed-in tool.
When to use it
Open Tank level from pressure when this is the job: Liquid height from gauge pressure, specific gravity, blanket pressure, and the height of the tap. That is usually a level or flow calibration, a bore check, or a valve you are about to size.
Step-by-step
- Open Tank level from pressure from the tool list.
- Fill Units, Gauge pressure, Specific gravity, Blanket pressure from the instrument, the drawing, or the job record. Use the unit shown beside each field.
- Fill the remaining fields the same way. Skip a field only when the screen marks it optional.
- Run Calculate when that control is on the page, then read every result row and any warning.
- Check the result against the site procedure and the manufacturer data before you change a range, a wire, a setpoint, or a weight.
- This help page is public. Opening the tool still requires a Pro session.
Inputs
- Units
- Imperial or metric. Pick one and enter every other field in that system.
- Gauge pressure
- Gauge pressure is the value you read from the instrument, the drawing, or the job record. Enter it in psi.
- Specific gravity
- How heavy the fluid is compared with water. Use the fluid that is actually in the leg, the tank, or the line.
- Blanket pressure
- Blanket pressure is the value you read from the instrument, the drawing, or the job record. Enter it in psi.
- Tank height
- The shell height, not the fluid level, unless the label says level.
- Tap offset
- Tap offset is the value you read from the instrument, the drawing, or the job record. Enter it in ft.
Results
- Result
- The reported value for Tank level from pressure. Use the unit printed on that row.
- Warnings
- A warning means an entry is incomplete or outside what this tool will stand behind. Recheck the inputs and the site procedure.
Common mistakes
- Using the wrong specific gravity, or forgetting a wet leg, a seal fill, or a blanket pressure.
- Mixing a head unit with a pressure unit without reading the unit on the screen.
- Sizing from a flow or a differential that is not the one in the line.
- Do not treat a result from Tank level from pressure as a substitute for the site procedure or the manufacturer data.
Standards references
These are the standards and public references named on this tool. Clause numbers appear only when the catalog already cites them.
- Hydrostatic head P = ρ g h
- NIST SP 811 inch of water at 60°F, 248.84 Pa
- Standard gravity 9.80665 m/s²
Offline and access
This engine can run offline after the server has cached it for the signed-in account.
A free session can read this help page. The tool card shows the name and the short summary. Opening the tool requires Pro.