Description
Compare a measurement to an explicit limit after a supplied directed unit factor.
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.
Compare a measurement to an explicit limit after a supplied directed unit factor.
When to use this tool
Use Exposure Limit Supplied Units Crosswalk 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 measured, measuredUnit, limit, limitUnit, conversionFactor. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read converted, margin, exceeds. Inspect exceeds before interpreting the associated values.
Require nonempty measuredUnit and limitUnit labels and a positive conversionFactor. Return converted=measured*factor, margin=limit-converted, and exceeds=(converted>limit).1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| measured | Measured | Required. Finite number. |
| measuredUnit | Measured Unit | Required. Text; maximum UTF-16 length 8192. |
| limit | Limit | Required. Finite number. |
| limitUnit | Limit Unit | Required. Text; maximum UTF-16 length 8192. |
| conversionFactor | Target limit units per source measured unit; labels are not verified. | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| converted | Converted | Required. Finite number. |
| margin | Signed surplus or deficit under the explicitly supplied rule. | Required. Finite number. |
| exceeds | Exceeds | Required. Boolean. |
{
"input": {
"measured": 2,
"measuredUnit": "mg/m3",
"limit": 1500,
"limitUnit": "ug/m3",
"conversionFactor": 1000
},
"output": {
"converted": 2000,
"margin": -500,
"exceeds": true
}
}Limitations and assumptions
- The factor must map measured into limit units, but labels and conversion are not verified and signed measured/limit values are permitted. A supplied limit comparison does not establish the applicable legal standard, measurement validity, or safe workplace exposure.
- 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
- Workplace Air Blank Mass Correction
Signed field-blank correction with supplied sample volume and recovery.
- Manual Task Explicit Load Limit Gap
Compare a supplied task load and uncertainty against a caller-established limit.