Description
Require nonnegative previousMeterHours and currentMeterHours no smaller, then return current minus previous as serviceHours.
Security administration uses retention periods, control owners, acknowledgments, recovery targets, and test records. Arithmetic and labels can make these records consistent, but they do not demonstrate that a control works or that a policy is adequate.
Require nonnegative previousMeterHours and currentMeterHours no smaller, then return current minus previous as serviceHours.
When to use this tool
Use Non Combat Equipment Service Hour Delta when you need a narrow security-record calculation or formatter under supplied policy values.
How to use the tool and how it works
- Enter previousMeterHours, currentMeterHours. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read serviceHours. Use the output convention below.
Require nonnegative previousMeterHours and currentMeterHours no smaller, then return current minus previous as serviceHours.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| previousMeterHours | Previous Meter Hours | Required. Finite number; minimum 0. |
| currentMeterHours | Current Meter Hours | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| serviceHours | Service Hours | Required. Finite number. |
{
"input": {
"previousMeterHours": 120,
"currentMeterHours": 157.5
},
"output": {
"serviceHours": 37.5
}
}Limitations and assumptions
- Resets and meter rollovers are rejected rather than resolved; operating hours alone do not establish equipment condition or a safe service interval.
- 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
Review the complete control evidence, applicable policy, and operational tests before making a security decision.
References
Similar or alternative tools
- Public Asset Service Due Date
Parse lastServiceDate and add serviceIntervalDays in 0-100000 using UTC dates.
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