Reference
What this tool does
Convert pressure, temperature, flow, length, and volume with NIST SP 811 factors. 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 Unit conversions when this is the job: Convert pressure, temperature, flow, length, and volume with NIST SP 811 factors. That is usually a factor you would otherwise copy from memory.
Step-by-step
- Open Unit conversions from the tool list.
- Fill Family, Value, From, To from the instrument, the drawing, or the job record. Use the unit shown beside each field.
- 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
- Family
- Choose the Family that matches the instrument, the drawing, or the job. Choices include Pressure, Temperature, Flow, Length, Volume.
- Value
- The number you are converting. Read the unit the screen is asking for.
- From
- Choose the From that matches the instrument, the drawing, or the job. Choices include psi, kPa, bar, Pa, atm, inH2O.
- To
- Choose the To that matches the instrument, the drawing, or the job. Choices include kPa, psi, bar, °C, °F, L/min.
Results
- Result
- The reported value for Unit conversions. 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
- Copying a field factor without reading where it comes from.
- Using a rounded sheet value where the job asks for the more exact value shown beside it.
- Do not treat a result from Unit conversions 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.
- NIST Special Publication 811
- SI definition of the kelvin (0 °C = 273.15 K)
- International inch 0.0254 m and foot 0.3048 m
- US gallon 231 in³ and petroleum barrel 42 US gallons
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.