ISO 13373

Definition of ISO 13373

ISO 13373 defines international standards for condition monitoring and diagnostics of machines using vibration measurement, establishing structured methods for systematically interpreting vibration data across various machine types.

Normative Foundations

The ISO 13373 series comprehensively structures vibration diagnostics:

• Part 1: Specifies general procedures for condition monitoring.
• Part 2: Systematically catalogs diagnostic vibration patterns.
• Part 3: Defines diagnostic guidelines for different machine types.
• Part 9: Addresses diagnostic methods for complex machine systems.
• Additional Parts: Methodically cover specific diagnostic aspects.

Diagnostic Approaches

The standard outlines structured strategies for various fault types:

• Imbalance Diagnosis: Amplitude and phase relationships at rotational frequency.
• Misalignment: Characteristic higher harmonic vibrations.
• Bearing Damage: Specific shock pulse frequencies and envelope spectra.
• Gear Diagnosis: Tooth meshing and sideband frequencies.
• Cavitation Analysis: High-frequency noise components in the spectrum.

Implementation Process

Standard-compliant implementation requires structured approaches:

• Machine Classification: Based on criticality and diagnostic effort.
• Measurement Points: Defined per standard recommendations.
• Measurement Routines: Established with appropriate intervals.
• Diagnostic Methods: Selected by machine type and fault.
• Baseline Values: Recorded under defined operating conditions.

Integration into Maintenance Concepts

ISO 13373 supports modern maintenance strategies:

• Condition Monitoring Systems: Implement standard-compliant diagnostic logic.
• Predictive Maintenance: Uses standardized diagnostic methods.
• Knowledge-Based Systems: Codify diagnostic experience per the norm.
• Automated Diagnostics: Apply standard recommendations.
• Training Programs: Teach standardized diagnostic skills.

Systematic implementation of ISO 13373 standards in industrial condition monitoring systems enhances the reliability of vibration diagnostics, enabling precise, methodical fault detection to optimize maintenance strategies and maximize equipment availability.