STEP Diagnostics - Thermocouple extension acceptance record
Original documentation aid for external shop probes; not an installation or vehicle test procedure.

Case / technician / date:
Measurement question / applicable equipment and vehicle instructions:
Probe identity / readout identity / configured thermocouple type:
Proposed complete assembly / planned route:

Repeat for every probe lead, extension, adapter and connector transition:
Item identity / complete part number:
Role (sensing, extension, documented compensating cable):
Full thermocouple / grade / cable designation:
Manufacturer compatibility reference and source location:
Mating connector identities / material compatibility evidence:
Polarity identification and supporting reference:
Cable local-exposure restrictions:
Connector / insulation / complete assembly restrictions:
Planned position / local exposure established or unknown:
Accuracy grade evidence (separate from use grade):
Unresolved information:
Decision (documented fit / missing information / unsuitable):
Decision basis / reviewer / date:

Accepted assembly identity retained with measurement file:
Changes since prior reading:
What the evidence supports:
What remains unresolved / next authorized check:

Do not transfer the probe's advertised range to an extension or substitute.
Use unknown for missing information. This blank form supplies no vehicle specifications.