Description
Calculate tool-contact time after excluding recorded noncontact seconds.
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.
Calculate tool-contact time after excluding recorded noncontact seconds.
When to use this tool
Use Vibration Tool Contact Duration when you already have contactStartSeconds, contactEndSeconds, noncontactSeconds and need to calculate tool-contact time after excluding recorded noncontact seconds.
How to use the tool and how it works
- Enter contactStartSeconds, contactEndSeconds, noncontactSeconds. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read contactSeconds. Use the output convention below.
Require end>=start and noncontactSeconds within [0,end-start]; return end-start-noncontact.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| contactStartSeconds | Contact Start Seconds | Required. Finite number. |
| contactEndSeconds | Contact End Seconds | Required. Finite number. |
| noncontactSeconds | Noncontact Seconds | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| contactSeconds | Contact Seconds | Required. Finite number. |
{
"input": {
"contactStartSeconds": 100,
"contactEndSeconds": 400,
"noncontactSeconds": 60
},
"output": {
"contactSeconds": 240
}
}Limitations and assumptions
- This is supplied contact duration, not a vibration dose, health risk assessment or acceptable exposure limit.
- 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
- Shift Exposure Time Weight
Calculate one exposure-time-weighted contribution to a supplied reference duration.
- Work Place Exposure Limit Edition
Record a supplied occupational exposure-limit reference and edition.