Source: https://guthlabs.ai/docs/instruments/lifting-condensation-level-lcl-height/implementation/

instrument implementation / implementation-contract

# Lifting Condensation Level (LCL) Height implementation

A source-bound implementation contract for Lifting Condensation Level (LCL) Height; deployment and executable qualification remain separate.

Status: **VERIFIED_CLEAN**Lifecycle: **implementation-contract**

## Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

**Record owner**: Guth Instruments

**Lifecycle**: verified-clean

**Evidence ID**: t5-005

**Effect**: Computation or source lookup only

## Input and validation requirements

The specification does not define temperature units or validation behavior for Td greater than T, and an extreme but finite JavaScript input overflows to Infinity. A robust implementation should require compatible temperature units, flag negative LCL results, and handle numeric overflow explicitly.

## Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

## Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

````
{
  "inputs": {
    "temperature": 25,
    "dew_point": 17,
    "temperature_unit": "°C",
    "output_unit": "m_and_ft"
  },
  "expected_outputs": {
    "lcl_height_m": 1000,
    "lcl_height_ft": 3280.84
  },
  "working": "T − Td = 25 − 17 = 8 °C. LCL = 125 × 8 = 1000 m. Feet = 1000 × 3.28084 = 3280.84 ft."
}
````

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/lifting-condensation-level-lcl-height/>)[02**Mechanism**](<https://guthlabs.ai/docs/instruments/lifting-condensation-level-lcl-height/mechanism/>)[04**Qualification**](<https://guthlabs.ai/docs/instruments/lifting-condensation-level-lcl-height/qualification/>)

## Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

- `VERIFIED_LEDGER.json`

- `evidence-tranche5/tranche5-results.json`