ISO 16063-34:2019

Overview

ISO 16063-34:2019 specifies methods for testing the fixed‑temperature sensitivity of rectilinear vibration and shock transducers. It defines instrumentation, procedures and reporting for determining the complex sensitivity (magnitude and phase) of transducers at controlled temperatures. The standard supports both absolute calibration by laser interferometer and comparative calibrations using a reference transducer, covering method‑dependent frequency, dynamic and temperature ranges.

Key topics and requirements

• Scope and ranges
  • Frequency: 10 Hz to 3 kHz (method-dependent)
  • Dynamic acceleration range: 1 m/s² to 100 m/s² (frequency-dependent)
  • Temperature range: −190 °C to 800 °C (method-dependent)
• Three calibration methods
  • Method 1 (laser interferometer): magnitude and phase calibration at fixed temperatures, applicable 10 Hz–3 kHz.
  • Method 2 (reference transducer inside chamber): magnitude and phase calibration at fixed temperatures, applicable 10 Hz–1 kHz; chamber temperature limits typically −70 °C to 500 °C.
  • Method 3 (reference transducer outside chamber): determination of temperature response of complex sensitivity over a temperature range (phase and magnitude variation with temperature).
• Apparatus and setup
  • Vibration exciter, low‑conductivity high‑stiffness ceramic fixture, temperature chamber with optical access for a laser, temperature sensors, interferometer and calibrated reference transducer plus conditioning amplifier.
  • The device under test (DUT), its cable and conditioning amplifier are treated as a single unit for testing.
  • Recommended chamber uniformity ±2 °C at fixed temperatures and ambient calibration conditions of 23 ± 5 °C, RH ≤ 75%.
• Measurement uncertainty (expanded, k≈2)
  • Magnitude uncertainty: Method 1 ~0.5% at reference conditions (1% outside); Method 2 ~1% (2% outside); Method 3 ~2% (3% outside).
  • Phase uncertainty: Method 1 ~0.5° at reference (1° outside); Method 2 ~1° (2.5° outside); Method 3 ~2° (3° outside).
• Reporting and test procedures
  • Test report requirements, preferred amplitudes/frequencies/temperatures, and guidance for temperature stabilization and uncertainty evaluation are specified.

Applications and users

• Practical applications:
  • Calibration laboratories verifying transducer sensitivity at elevated or cryogenic temperatures
  • Manufacturers validating sensor performance across temperature ranges
  • R&D and quality assurance for aerospace, automotive, power generation and industrial vibration monitoring where temperature‑dependent sensitivity is critical
• Typical users:
  • Metrology labs, test engineers, instrumentation specialists and manufacturers of accelerometers and velocity transducers

Related standards

• ISO 16063‑11:1999 - Primary vibration calibration by laser interferometry
• ISO 16063‑21:2003 - Vibration calibration by comparison to a reference transducer
• ISO 2041 - Vibration, shock and condition monitoring vocabulary

Keywords: ISO 16063-34, vibration transducer calibration, fixed temperature sensitivity, laser interferometer, reference transducer, temperature chamber, complex sensitivity, phase calibration, measurement uncertainty.