NIOSH Coupling Multiplier Lookup
RNLE coupling multiplier exact independently verified good/fair/poor coupling and vertical-region table key, task context part of reference. Exact caller verified numeric reference; signed deviations retained. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Description
The NIOSH coupling multiplier represents the independently assessed quality of the hand-to-object connection.
The NIOSH coupling multiplier represents the independently assessed quality of the hand-to-object connection.1
A caller crosswalk must specify the appropriate reference row before retrieval. Use this tool to compare an observation with an exact caller-supplied numeric reference.
When to use NIOSH Coupling Multiplier Lookup
Use this tool to compare an observation with an exact caller-supplied numeric reference. Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
How to use NIOSH Coupling Multiplier Lookup and understand its results
- Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
- Enter callerVerifiedNioshCouplingKeys, callerVerifiedNioshCouplingValues, queryNioshCouplingKey, observedNioshCouplingValue, using the field meanings and rules below, then run the tool.
- Read callerReferenceValue, signedObservedMinusReference. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| callerVerifiedNioshCouplingKeys | Caller verified niosh coupling keys; caller assertion or measurement requiring independent evidence | list of string | Required |
| callerVerifiedNioshCouplingValues | Caller verified niosh coupling values; caller assertion or measurement requiring independent evidence | list of number | Required |
| queryNioshCouplingKey | Query niosh coupling key | string | Required |
| observedNioshCouplingValue | Observed niosh coupling value | number | Required |
Enter aligned unique reference keys and coupling-multiplier values in [0,1], an exact key and an observed multiplier in [0,1]. Retrieve the caller reference and return observation minus reference. No grip classification or official coupling table is installed.
difference=observedMultiplier−callerReference[indexOfExact(queryKey)] Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| callerReferenceValue | Caller Reference Value; follow the units, sign, ordering and evidence convention stated above | number |
| signedObservedMinusReference | Signed Observed Minus Reference; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"callerVerifiedNioshCouplingKeys": [
"a",
"b"
],
"callerVerifiedNioshCouplingValues": [
0.2,
0.4
],
"queryNioshCouplingKey": "b",
"observedNioshCouplingValue": 0.5
},
"output": {
"callerReferenceValue": 0.4,
"signedObservedMinusReference": 0.09999999999999998
}
}Limitations and assumptions
The numerical reference, unit basis and observation come from the caller. No authoritative regional table, standard edition, calibration or management rule is installed, retrieved or verified.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use NIOSH Frequency Multiplier Lookup for this related task: The NIOSH frequency multiplier depends on lifting frequency, duration and assessment conditions.
Use NIOSH RWL Load Constant Base Calculator when its separate inputs and assumptions fit the question: The Revised NIOSH Lifting Equation multiplies a load constant by six task multipliers.
References
-
NIOSH Coupling Multiplier Lookup — tool.io
Similar or alternative tools
- NIOSH Frequency Multiplier Lookup
The NIOSH frequency multiplier depends on lifting frequency, duration and assessment conditions.
- NIOSH RWL Load Constant Base Calculator
The Revised NIOSH Lifting Equation multiplies a load constant by six task multipliers.