CO2 Air Concentration Safety Threshold Checker

Actual actual calibrated cave CO2 concentration versus independently applicable occupational/emergency review bounds versus independently applicable ordered caller review bounds in CO2ppmv; not air-entry clearance. Endpoints inclusive, all margins signed. No default benchmark, universal threshold, compliance, medical reassurance or safe operation approval; authoritative protocol/context and measurement uncertainty external.

Description

Carbon-dioxide concentration needs calibrated contemporaneous measurement and applicable assessment context.

Carbon-dioxide concentration needs calibrated contemporaneous measurement and applicable assessment context.^[1]

Passing a caller-supplied range does not establish breathable air or characterize other gases.

When to use CO2 Air Concentration Safety Threshold Checker

Use this tool to compare a measurement with the supplied applicable bounds. Establish the survey or observation scope, reference frame, units and independently applicable calibration or qualified plan.

How to use CO2 Air Concentration Safety Threshold Checker and understand its results

Establish the survey or observation scope, reference frame, units and independently applicable calibration or qualified plan.
Enter independentlyMeasuredValue, callerApplicableLowerReviewValue, callerApplicableUpperReviewValue, using the field meanings and rules below, then run the tool.
Read withinCallerReviewBounds. Inspect signedLowerMargin and signedUpperMargin: a negative margin identifies the exceeded boundary; both endpoints are included.
Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.

Input field	Meaning	Value type	Requirement
independentlyMeasuredValue	Independently measured value	number	Required
callerApplicableLowerReviewValue	Caller applicable lower review value	number	Required
callerApplicableUpperReviewValue	Caller applicable upper review value	number	Required

Enter a finite observation and independently applicable lower and upper bounds in the same units. Require lower≤upper, including equal bounds. Both endpoints pass the inclusive comparison. Return the within-bounds boolean and two signed margins; a negative margin identifies which boundary is exceeded. The implementation does not impose additional physiological ranges or choose the bounds.

within=(lower≤observed≤upper); lowerMargin=observed−lower; upperMargin=upper−observed

Use the matching field units and the exact boundary, ordering and reference rules above.

Output field	Meaning	Value type
result	Qualified observed calculation or explicit reference	object
result.withinCallerReviewBounds	True when the measurement is between the supplied bounds, endpoints included.	boolean
result.signedLowerMargin	Observed value minus the supplied lower bound.	number
result.signedUpperMargin	Supplied upper bound minus observed value.	number

json

{
  "input": {
    "independentlyMeasuredValue": 10,
    "callerApplicableLowerReviewValue": 5,
    "callerApplicableUpperReviewValue": 15
  },
  "output": {
    "result": {
      "withinCallerReviewBounds": true,
      "signedLowerMargin": 5,
      "signedUpperMargin": 5
    }
  }
}

Limitations and assumptions

The actual observation coverage, calibration and qualified plan determine applicability. A numerical result does not establish survey accuracy, route suitability, atmosphere conditions or equipment adequacy beyond the declared comparison. Passing means only that the supplied measurement is inside the supplied inclusive bounds.

Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Extremely large composite outputs are rejected.

Alternative or Complementary methods

For a related step, use Oxygen Depletion Percent Calculator: An oxygen comparison subtracts a calibrated measured percentage from a declared reference percentage. For a complementary comparison, use CO2 Exposure Time-Weighted Limit Checker: A carbon-dioxide TWA weights measured concentration by observed interval duration.

References

CO2 Air Concentration Safety Threshold Checker — tool.io

Similar or alternative tools

Oxygen Depletion Percent Calculator
An oxygen comparison subtracts a calibrated measured percentage from a declared reference percentage.
CO2 Exposure Time-Weighted Limit Checker
A carbon-dioxide TWA weights measured concentration by observed interval duration.