Description
Compare observed sampler flow with a positive reference flow.
Occupational exposure records need explicit agents, units, reference durations, method editions and observation conditions. A linear time-weighted contribution differs from a complete shift average and from logarithmic noise calculations. A recorded fit date or consent flag is metadata, rather than proof of protection, valid authority or safe exposure.
Compare observed sampler flow with a positive reference flow.
When to use this tool
Use Occupational Sampler Calibration Ratio when you already have observedFlow, referenceFlow and need to compare observed sampler flow with a positive reference flow.
How to use the tool and how it works
- Enter observedFlow, referenceFlow. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read observedToReference, relativeDifference. Use the output convention below.
Require observedFlow>=0 and referenceFlow>0; return observed/reference and (observed-reference)/reference.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| observedFlow | Observed Flow | Required. Finite number; minimum 0. |
| referenceFlow | Reference Flow | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| observedToReference | Observed To Reference | Required. Finite number. |
| relativeDifference | Relative Difference | Required. Finite number. |
{
"input": {
"observedFlow": 2.1,
"referenceFlow": 2
},
"output": {
"observedToReference": 1.05,
"relativeDifference": 0.050000000000000044
}
}Limitations and assumptions
- Flows need the same units and conditions; no sampler calibration, collection adequacy or acceptable error is determined.
- 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 the full measurement protocol, calibrated observations and applicable source method for an exposure assessment. Reconcile fit, consent and equipment records independently; one weighted term or source label does not establish adequacy or compliance.
References
Similar or alternative tools
- Occupational Task Exposure Code
Qualify an explicitly assigned task exposure code.
- Noise Measurement TWA Reference Label
Label a supplied noise result with its unit and reference method.