Description
Return dry-volume equivalent from wet sample volume.
Gas-sampling conversions distinguish actual from reference volume, wet from dry composition and total from partial pressure. A supplied ideal-gas or constant-flow factor requires compatible units and state definitions without validating actual sampling conditions or exposure.
Return dry-volume equivalent from wet sample volume.
When to use this tool
Use Gas Sample Humidity Volume Correction when checking the stated gas state, sampling-volume or flow-basis conversion.
How to use the tool and how it works
- Enter wetVolume, vaporPressure, totalPressure. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read dryFraction, dryVolume. Use the output convention below.
Return dry-volume equivalent from wet sample volume. Require wetVolume/vaporPressure >= 0 and totalPressure > vaporPressure; dryFraction = 1-vapor/total, dryVolume = wetVolume*fraction.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| wetVolume | Wet Volume | Required. Finite number; minimum 0. |
| vaporPressure | Vapor Pressure | Required. Finite number; minimum 0. |
| totalPressure | Total Pressure | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| dryFraction | Dry Fraction | Required. Finite number. |
| dryVolume | Dry Volume | Required. Finite number. |
{
"input": {
"wetVolume": 100,
"vaporPressure": 2,
"totalPressure": 100
},
"output": {
"dryFraction": 0.98,
"dryVolume": 98
}
}Limitations and assumptions
- This assumes ideal partial-pressure correction at the same state; temperature normalization and actual sample humidity are not derived.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use verified absolute pressure/temperature, humidity and flow calibration with the appropriate real-gas/sampling model when ideal assumptions are inadequate.
References
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