Pendulum hardness testerPendulum hardness tester

Pendulum Hardness Tester

The pendulum hardness test evaluates the hardness of a coating by setting a pendulum into oscillation on the coated surface and measuring the time it takes for the oscillation amplitude to decrease by a specified amount. The shorter the damping time, the softer the coating.

Two widely used test procedures are Konig and Persoz, which differ in the period and amplitude of oscillation:

  • Persoz method: Measures the time for the amplitude to decrease from 12° to 4°

  • Konig method: Measures the time for the amplitude to decrease from 6° to 3°

The instrument is simple to operate and is available in three model options: Persoz, Konig, or Persoz & Konig combined.

Ref: Pendulum Hardness Tester

Pendulum Hardness Tester - Ref: Pendulum Hardness Tester

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The pendulum hardness test evaluates the hardness of a coating by setting a pendulum into oscillation on the coated surface and measuring the time it takes for the oscillation amplitude to decrease by a specified amount. The shorter the damping time, the softer the coating.

Two widely used test procedures are Konig and Persoz, which differ in the period and amplitude of oscillation:

  • Persoz method: Measures the time for the amplitude to decrease from 12° to 4°

  • Konig method: Measures the time for the amplitude to decrease from 6° to 3°

Both methods are based on the same principle — the oscillation of a pendulum in contact with a coating decreases more rapidly on softer surfaces — but differ in their dimensions, oscillation periods, and amplitudes.

The Pendulum Hardness Tester is the latest instrument designed to perform these tests and complies with the following National and International Standards:

  • ISO 1522

  • ASTM D4366

  • BS 3900-E5

  • DIN 53157

  • NBN T22-105

  • NF T30-016

The instrument is simple to operate and is available in three model options: Persoz, Konig, or Persoz & Konig combined.

To see the instrument being demonstrated please click on the "Video" tab   T01-700024 T01-700025 T01-700026  

  • Large Capacitive Touch Screen: Clearly displays all testing parameters, environmental temperature, and humidity, with rich and intuitive content for easy operation.
  • Fully Automated Testing: One-button start initiates the entire test sequence — automatically moving the pendulum to the release position, clamping the test panels, running the test, and completing the process. This high degree of automation simplifies operation and eliminates human error.
  • Automatic Lifting Work Platform: Uniquely designed platform clamps test panels within 3 seconds, providing a stable force of at least 25 N. The platform remains steady during pendulum swings, ensuring reliable and reproducible results.
  • High-Precision Pendulum: Machined with precision mechanical processing for excellent stability, ensuring reproducibility and comparability of test data — performance comparable to similar imported instruments.
  • Lift-Up Organic Glass Door Cover: Enhances operation space, reduces deviations caused by air circulation, and features a unidirectional resistance design to prevent impact when closing.
  • Dual Test Methods: Supports both K (Konig) and P (Persoz) pendulum methods, switchable according to user requirements.
  • Electromagnetic Pendulum Release: Ensures precise and consistent test results.
  • Built-In Horizontal Inclinometer: Provides accuracy to 0.05°, allowing direct observation of horizontal deviation on the touch screen for easy adjustment.
  • Real-Time Test Monitoring: Automatically counts and displays test timing and cycles, stopping the test when deviations reach as low as 3° (Konig) or 4° (Persoz), while calculating total test period.
  • Data Management: View historical test data for comparison and trend analysis.
  • Versatile Sample Compatibility: Suitable for test panels ranging in thickness from 0.1 mm to 5.5 mm.
  • Quality Assurance: Supplied with a calibration certificate for confidence in measurement accuracy.
 

K & P (König Persoz) Pendulum Hardness Tester