Iec 612982 May 2026

IEC 61298-2 , titled "Process measurement and control devices – General methods and procedures for evaluating performance – Part 2: Tests under reference conditions," provides a standardized framework for evaluating the performance of industrial instrumentation. It ensures that performance data for analog and digital devices is reliable and comparable by testing them under controlled, ideal conditions. IEC Webstore Key Evaluation Areas

Choose Vendor B. Why? Because you know exactly how the instrument will behave in your plant where summer temperatures hit 45°C. Vendor A's vague claim is unverifiable. iec 612982

  • Mounting: Standardized mounting fixtures and interfaces to minimize mounting resonance and ensure repeatability.
  • Reference sensor: Use of a calibrated reference accelerometer to measure input vibration; alignment and calibration traceable to national standards.
  • Signal conditioning: Specified amplifier/gain settings, anti-aliasing filters, and sampling rates appropriate to test bandwidth.
  • Sinusoidal vibration tests: Single-frequency or swept-frequency tests to determine sensitivity vs frequency, resonance behavior and linearity at defined amplitudes.
  • Random vibration tests: Broadband random excitation to evaluate noise, linearity, and response under realistic spectra; specify spectrum shape, RMS levels, and duration.
  • Shock/transient tests: Defined shock pulses (e.g., half-sine, sawtooth) with specified peak acceleration and pulse duration to assess transient performance and saturation.
  • Instrumenting & data acquisition: Simultaneous measurement of input (reference) and device-under-test (DUT) outputs; sampling frequency typically several times the highest test frequency; use of windowing/averaging for random tests.
  • Cross-axis and transverse sensitivity tests: Apply excitation along orthogonal axes and measure out-of-axis response.

Myth 2: "Compliance means the device is good for my process."

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). IEC 61298-2 , titled "Process measurement and control

Practical example:

A flow transmitter is tested at 23°C ± 2°C, 50% RH, with clean power. That becomes its "reference performance." If it fails in a hot, humid plant, you know it is due to environmental effects, not the device itself. Myth 2: "Compliance means the device is good for my process