Description
Ideal dry-gas flow conversion with supplied absolute states; does not infer sampling compliance.
Occupational exposure calculations combine measured quantities, duration, reference conditions, weighting, and sampling support. Linear concentrations, squared acceleration, and logarithmic sound levels require different arithmetic. A supplied reference or limit is not automatically the applicable standard, and a local calculation is separate from a full exposure and safety assessment.
Ideal dry-gas flow conversion with supplied absolute states; does not infer sampling compliance.
When to use this tool
Use Sampler Flow Temperature Basis Flag when you need this particular sampling, duration, reference-unit, physical-exposure, or reporting-base term.
How to use the tool and how it works
- Enter measuredFlow, measuredKelvin, referenceKelvin, measuredPressure, referencePressure, useReference. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read reportedFlow. Use the output convention below.
For nonnegative measuredFlow and positive measuredKelvin, referenceKelvin, measuredPressure, and referencePressure return reportedFlow=measuredFlow*(measuredPressure/referencePressure)*(referenceKelvin/measuredKelvin) if useReference, otherwise measuredFlow.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| measuredFlow | Measured Flow | Required. Finite number; minimum 0. |
| measuredKelvin | Positive absolute sampling temperature in kelvin. | Required. Finite number; strictly above 0. |
| referenceKelvin | Positive absolute reference temperature in kelvin. | Required. Finite number; strictly above 0. |
| measuredPressure | Measured Pressure | Required. Finite number; strictly above 0. |
| referencePressure | Reference Pressure | Required. Finite number; strictly above 0. |
| useReference | Use Reference | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| reportedFlow | Reported Flow | Required. Finite number. |
{
"input": {
"measuredFlow": 2,
"measuredKelvin": 300,
"referenceKelvin": 300,
"measuredPressure": 100,
"referencePressure": 200,
"useReference": true
},
"output": {
"reportedFlow": 1
}
}Limitations and assumptions
- Temperature uses absolute kelvin and pressures share one absolute-pressure unit. This ideal-gas volume-rate conversion omits humidity, nonideal gas effects, sampler behavior, calibration, and validity of an exposure measurement.
- 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 a complete hazard-specific assessment with calibrated measurements and the appropriate exposure model. Verify reference conditions, sampling coverage, weighting, denominator, and the applicable professional or regulatory method.
References
Similar or alternative tools
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