Proficiency Testing — RTD (With & Without Indicator)(Interlaboratory Comparison — Temperature Sensors)
ISO/IEC 17043-aligned proficiency testing scheme for RTD sensor (with and without indicator) calibration — circulated reference artefacts, ISO 13528 statistical evaluation (En / z-scores), and confidential performance reports for NABL-accredited and aspiring calibration laboratories.
What is the Proficiency Testing — RTD (With & Without Indicator) Scheme?
Under ISO/IEC 17025:2017 (clause 7.7), every accredited calibration laboratory must monitor the validity of its results by participating in proficiency testing (PT) — and NABL expects documented, satisfactory PT participation across the accredited scope. Global Lab operates an ISO/IEC 17043:2023-aligned interlaboratory comparison scheme for RTD sensor (with and without indicator) calibration: a characterised artefact travels between participating labs, each calibrates it by their normal method, and results are evaluated statistically against the assigned reference value.
RTDs carry temperature traceability into every oven, furnace and bath a lab calibrates — sensor-level agreement between labs is the foundation under all of it. The scheme measurand covers calibration of RTD sensors, bare and with indicators, by comparison in stable temperature sources, with results reported at agreed comparison temperatures spanning the common industrial range. Each participant receives a confidential performance report — En numbers and z-scores per ISO 13528 — through our Live PT Program portal, with anonymised group statistics and corrective-action guidance where performance flags arise.
How the Proficiency Testing — RTD (With & Without Indicator) is Conducted
- 1
Enrolment
The laboratory enrols for the RTD sensor (with and without indicator) scheme round through the Live PT Program portal and receives the scheme protocol. - 2
Artefact Receipt
The characterised artefact arrives per the circulation schedule with handling instructions and condition-check requirements. - 3
Calibration by Your Method
Your lab calibrates the circulated RTD (and indicator, where applicable) by its normal comparison method in its own baths/dry-blocks and reports temperatures with uncertainties. - 4
Result Submission
Results with claimed uncertainties are submitted through the portal by the round deadline. - 5
Statistical Evaluation
Submissions are evaluated against the assigned value per ISO 13528 — En numbers and z-scores computed per measurement point. - 6
Performance Report
A confidential report with your performance flags and anonymised group statistics is issued; corrective-action guidance follows any unsatisfactory result.
Applicable Test Standards
| Standard | Title | Scope | Type |
|---|---|---|---|
| ISO/IEC 17043:2023 | Conformity Assessment — General Requirements for the Competence of Proficiency Testing Providers | PT Scheme Operation | International |
| ISO 13528:2022 | Statistical Methods for Use in Proficiency Testing by Interlaboratory Comparison | En / z-Score Evaluation | International |
| ISO/IEC 17025:2017 | Competence of Testing and Calibration Laboratories (Clause 7.7) | Participation Requirement | International |
| IEC 60751 | Industrial Platinum Resistance Thermometers and Platinum Temperature Sensors | Sensor Class Context | Method Standard |