SIST EN ISO 22232-2:2020 PDF

Overview

SIST EN ISO 22232-2:2020 - Non‑destructive testing - Characterization and verification of ultrasonic test equipment - Part 2: Probes (ISO 22232-2:2020) specifies how to characterize and verify ultrasonic probes used in non‑destructive testing (NDT). The standard covers probes with centre frequencies from 0.5 MHz to 15 MHz, including:

• Single‑ or dual‑transducer contact probes generating longitudinal and/or transverse waves
• Single‑transducer immersion probes

Where material‑dependent ultrasonic values are used, the document references steel sound velocities of (5920 ± 50) m/s (longitudinal) and (3255 ± 30) m/s (transverse). The standard excludes phased array probes (see ISO 18563‑2) and routine on‑site verification procedures (see ISO 22232‑3).

Key topics and technical requirements

The standard defines technical requirements and test procedures to ensure probe performance and traceability. Key topics include:

• Probe documentation: probe data sheet and probe test report requirements.
• Test equipment: specifications for electronic equipment, test blocks and scanning systems used for probe characterization.
• Performance parameters and tests:
  • Physical aspects (inspection, dimensions, acoustic contact points)
  • Pulse shape, amplitude and duration
  • Frequency spectrum and bandwidth
  • Pulse‑echo sensitivity
  • Distance‑Amplitude Curve (DAC) / attenuation characteristics
  • Beam parameters for immersion, straight‑beam and angle‑beam contact probes (beam profile, divergence, focal distance, focal width, focal zone length, squint angle, index point)
  • Crosstalk measurement and acceptance criteria
• Calculation aids and annexes: near‑field calculation, calibration block guidance, and delay determination procedures.

Acceptance criteria and measurement procedures are provided so probe manufacturers, calibration laboratories and end users can verify probes consistently and reproducibly.

Practical applications

ISO 22232‑2 is used to:

• Verify new ultrasonic probes before deployment
• Characterize probe beam properties for critical inspections
• Support procurement and acceptance testing of probes
• Provide traceable measurement baselines for NDT quality systems

Common application areas include weld inspection, corrosion mapping, thickness gauging and component inspection across oil & gas, power generation, aerospace, and manufacturing.

Who should use this standard

• NDT technicians and inspectors performing ultrasonic testing
• Probe manufacturers and suppliers for product specifications and test reports
• Calibration and metrology laboratories providing probe characterization services
• Quality managers, inspection engineers and asset owners who require documented probe performance

Related standards

• ISO 22232‑3 - Routine on‑site verification procedures for probes
• ISO 18563‑2 - Ultrasonic phased array probes (not covered by ISO 22232‑2)
• Supersedes: EN 12668‑2:2011

Keywords: ISO 22232‑2:2020, SIST EN ISO 22232‑2, ultrasonic probes verification, non‑destructive testing, probe characterization, ultrasonic beam parameters.