Pendulum Damping Tester Paint Hardness Konig Pendulum 6°-3°

Product Features & Attributes
This pendulum damping tester (Konig pendulum) is used to determine the hardness of paints, coatings and varnish films. It is a common instrument for coating hardness testing in the paint industry. Coating hardness is evaluated by measuring the damping time (seconds) of pendulum swing attenuation on the coating surface.

Working Principle: Two stainless steel balls on the pendulum are supported on the dried coating surface, swinging at a fixed period. Softer surfaces cause faster attenuation (shorter time from 6° to 3°), while harder surfaces cause slower attenuation. Hardness is expressed as damping time: the product of swing count within the specified angle range and the swing period.

Two Pendulum Types Available:

• Konig pendulum (K-type) : Standard configuration, weight 200±0.2g, length 500±1mm, steel ball diameter 5mm, period 1.4s, swing time on glass plate 250±10s

• Persoz pendulum (P-type) : Available upon request

Structure:

• Instrument base: Supports specimen and pendulum with level work table

• Pendulum: Konig or Persoz type

• Counting device: Automatic recording of swing counts

• Instrument cover: Prevents airflow interference

Technical Features:

• Automatic counting device for precise swing count recording

• Initial angle 6°, final angle 3°

• Timing range 999.9s for various coating tests

• Bubble level for easy leveling

• Photoelectric tube for automatic counting

• Instrument cover to avoid airflow interference

Operation Steps:

1. Place on vibration-free work table, level the instrument

2. Connect power and photoelectric tube, install control handles

3. Zero calibration, adjust photoelectric tube to 3° or 4° position

4. Place test panel on tray, gently lower pendulum onto panel

5. Set start handle to 6° or 12°, release pendulum

6. Automatically record swing count from 6°→3° or 12°→4°

7. Calculate damping time t = T × n

Precautions:

• Test environment: 23±2℃, 50±5% RH, no airflow

• Clean glass plate with ethanol or solvent before each use

• Regular verification with standard glass plate

• Avoid strong light (affects photoelectric counting)

• Do not move Konig pendulum upper weight (adjusts 1.4s period)

• Always use instrument cover during testing

Available in different specifications: Konig pendulum standard configuration, Persoz pendulum custom configuration to suit different testing standards.

Mainly used in paint manufacturers, coating contractors, automotive coating industry, furniture manufacturers, quality inspection institutions, research universities, and more for coating hardness testing.