Part 2 focuses on establishing an instrument's intrinsic performance. It describes test procedures conducted under strict reference conditions—such as controlled ambient temperature, humidity, and power supply. By minimizing external influences, the "reference performance" of a device can be accurately measured.
Verify that the device provides the same output for the same input multiple times.
: Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1,000 V. iec 612982
The instrument is subjected to step-by-step testing across its entire operational envelope. Technicians feed inputs at specific intervals—typically 0%, 25%, 50%, 75%, and 100% of the span—and log the corresponding outputs. 2. Repeatability Analysis
However, if you are looking for a "paper" or guide related to loop checks and commissioning, you likely mean : Part 2 focuses on establishing an instrument's intrinsic
This standard is applicable to both analog and digital devices that have defined input/output relationships and transfer functions. It provides a standardized framework that manufacturers, testing laboratories, and quality controllers can use to verify that equipment meets its claimed performance specifications. Scope and Applicability
: Covers "Methods for performance evaluation" under reference conditions. It is essential for determining how accurately a device performs its intended function when factors like temperature and pressure are stable . Verify that the device provides the same output
This foundational document sets the stage. It defines critical terminology that engineers must use consistently:
: This is a highly regarded document for "Automation systems in the process industry – Electrical and instrumentation loop check" .
In complex industrial environments, even a tiny measurement error can lead to a plant shutdown or a safety hazard. IEC 61298-2 provides a level playing field by defining exactly how to test these devices under reference conditions
Confusion often arises because several IEC standards deal with industrial instruments. Here is a clear differentiation: