Overview
EN ISO 22232-1:2020 - Non-destructive testing - Characterization and verification of ultrasonic test equipment - Part 1: Instruments - specifies methods and acceptance criteria for assessing the electrical performance of digital ultrasonic instruments used in manual ultrasonic NDT. It covers instruments operating in pulse mode with A-scan display and is applicable for single- or dual-transducer probes and multi‑channel instruments within the 0.5 MHz to 15 MHz frequency range. The standard is not applicable to continuous-wave equipment and generally excludes phased‑array instruments (see ISO 18563-1), except where phased-array units have dedicated single/dual-transducer connectors.
Key Topics
The standard defines group-based tests, required equipment and measurable acceptance criteria. Major technical topics include:
- General conformity requirements and manufacturer technical specifications
- Group 1 tests (electrical/operational performance):
- Battery operational time and stability after warm-up
- Temperature and supply-voltage stability
- Time-base deviation and time-corrected gain (TCG)
- Transmitter pulse parameters: pulse repetition frequency, output impedance
- Receiver characteristics: cross-talk, dead time, dynamic range, input impedance, frequency response
- Gate performance (value, analog, alarm outputs)
- Highest digitized frequency and instrument response time
- Group 2 tests (detailed transmitter/receiver performance and physical checks):
- Transmitter voltage, rise time and pulse duration
- Receiver frequency response, noise level, gain linearity and vertical display linearity
- Acceptance criteria for each test and special conditions (e.g., logarithmic amplifiers)
Applications
EN ISO 22232-1 is used to ensure reliable, traceable performance of ultrasonic test equipment in practical NDT workflows:
- Creating procurement specifications for ultrasonic instruments
- Factory acceptance testing (FAT) and site commissioning
- Routine verification and calibration in NDT laboratories
- Quality assurance for inspection programs in manufacturing, oil & gas, aerospace and infrastructure
- Technical reference for equipment manufacturers designing or validating digital ultrasonic instruments
Who uses this standard
- NDT technicians and inspectors
- Calibration and metrology laboratories
- Quality managers and inspection engineers
- Equipment manufacturers and R&D teams
- Certification bodies and standards committees
Related Standards
- ISO 18563-1 (ultrasonic phased array instruments) - phased-array specific requirements
- EN 12668-1 (superseded) - previous edition replaced by EN ISO 22232-1
Keywords: EN ISO 22232-1, ultrasonic test equipment, NDT, A-scan, digital ultrasonic instruments, acceptance criteria, 0.5–15 MHz.
