Other major technical changes in the 2026 editions include aligning terminology with the newest edition of the International Electrotechnical Vocabulary (IEV), harmonizing Part 3's climate and vibration tests with the IEC 60654 series, and updating all EMC tests to match the requirements of for electrical equipment in industrial environments.
For the engineer who signs off on a billion-dollar plant startup, for the technician calibrating a life-critical reactor pressure sensor, and for the procurement manager trying to choose between two seemingly identical data sheets—IEC 61298 is the quiet anchor of trust.
Inputs are repeatedly set to identical values over brief windows under unchanging conditions. This measures the instrument's capacity to deliver tight, overlapping output clusters. 4. Linearity and Dead Time Analysis
Process measurement and control devices – General methods and procedures for evaluating performance – Part 2: Tests under reference conditions. iec 612982
: Typically excludes Process Measurement Transmitters (handled by IEC 62828).
Does the device give a different reading if the pressure is rising versus falling?
If you need help identifying if your specific,, requires testing per IEC 61298-2 or IEC 61298-3 , or if you need assistance determining the accuracy class required for your specific industrial application, please IEC 61298-2:2008 Other major technical changes in the 2026 editions
The heart of is the definition of reference conditions . These are the nominal environmental conditions, such as
Testing labs apply precise incremental inputs to the device across its entire operational span (e.g., 0%, 25%, 50%, 75%, and 100% of the scale). The resulting outputs are recorded during both increasing and decreasing cycles to check for alignment with the manufacturer's specified transfer function. 2. Hysteresis and Dead Band Assessment
The core of IEC 61298-2 revolves around a series of tests that determine essential performance metrics: 1. Accuracy and Error Measurement This measures the instrument's capacity to deliver tight,
Linearity, hysteresis, and accuracy are calculated from the recorded data. Significance of IEC 61298-2 in Industry
Measuring how closely the output follows a straight line relative to the input.
The test technician exercises the instrument by running it through full-scale input sweeps to eliminate mechanical or capacitive memory.
No. The standard only tells you how to test; it does not set performance thresholds. You still must define your required accuracy (e.g., 0.5% for inventory, 0.05% for custody transfer).