Maintained within a stable mid-range bandwidth, typically between 45% and 75%.
IEC 61298-2 emphasizes that conformity (how well the device matches a specific curve or line) is only valid if the device is non-linear (e.g., a square root extractor). For linear devices, linearity is often derived from the intrinsic error data.
The linearity test evaluates how closely the device’s performance curve matches a theoretical straight line across the entire operating span. 4. Repeatability Test
The International Electrotechnical Commission (IEC) is an international organization that prepares and publishes international standards for electrical technologies, known as IEC standards. These standards ensure safety, efficiency, and performance of electric devices and systems. iec 612982
Guidelines on how to measure the performance of optical amplifiers accurately.
Quantifies high-frequency noise hiding within analogue DC signals. 4. Drift Assessment
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. The linearity test evaluates how closely the device’s
To provide standardized data sheets that customers can trust.
It belongs to the larger IEC 61298 series, which outlines general methodologies for evaluating the functionality and performance of industrial instruments.
⭐⭐⭐⭐ (4/5) – Excellent for core performance but requires supplementation for modern industrial automation. These standards ensure safety
This part is critical for understanding an instrument's true ruggedness and suitability for its intended application. For instance, a flow meter in an outdoor oil pipeline must function within specification despite daily temperature swings, a challenge that Part 3 provides the methodology to evaluate. To streamline the process, recent revisions of Part 3 refer to other specialized standards, such as the IEC 61326 and IEC 61000 series, which cover electromagnetic compatibility testing in detail.
The standard mandates testing the device across its full range (usually 0% to 100%) to confirm the relationship between the input signal and the output signal. This ensures that the instrument behaves linearly or according to its predefined transfer function. 2. Hysteresis Test