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Pendulum hardness tester

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TQC Sheen SP0500 pendulum hardness tester

SKU: SP0500

Manufacturer: TQC Sheen

Availability: Order only

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The pendulum paint hardness tester is available in one of three models:

pendulum hardness tester according to the Persoz method
pendulum hardness tester according to the König method
combined hardness tester, which uses both König and Persosa pendulums

Both methods work on the principle that the damping time of a pendulum oscillating on a specimen indicates the hardness, according to the ISO 1522 standard.

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Description Specifications Recommended products

Description

The TQC Sheen pendulum hardness tester has a simple interface and is a modular system. The tool itself can be used for both the König method and the Persoz method.

König pendulum - rests on two tungsten carbide balls and is balanced (to adjust the natural vibration frequency) through a weight sliding along a vertical rod mounted on a crossbar. On a polished glass plate, the period of oscillation should be 1.40 ± 0.02 s, and the time for the decrease in the amplitude of oscillations of the pendulum when displaced from 6 ° to 3 ° should be 250 ± 10 s. The total mass of the pendulum should be 200 ± 0.2 g. The Koenig pendulum can slide on surfaces with a very low coefficient of friction.

The Persoz pendulum is also supported by two tungsten carbide balls, but without a counterweight. The period of oscillation on a polished glass plate should be 1 ± 0.001 s, and the time for decreasing the amplitude of oscillations when the pendulum deviates from 12 ° to 4 ° on the same surface should be 430 ± 10 s. The total mass of the pendulum should be 500 ± 0.1 g, its center of gravity at rest should be 60 ± 0.1 mm below the support plane, and the arrowhead should be 400 ± 0.2 mm below the support plane.

Both pendulums must be ordered separately. Once the correct pendulum has been installed, switching between the two measurement methods is done at the push of a button. The pendulum moves fully automatically with a stepper motor. Also, the release of the pendulum is automated using an electromagnetic system. The end of the test is signaled by a visual and audible signal.

Specifications

Specifications	SP0510 - Persoz Method	SP0505 - König Method
Swivel balls	2 tungsten carbide, 8 mm diameter	2 tungsten carbide, 5 mm diameter
Distance between swivel balls	50 mm	30 mm
Period of oscillation	1 sec	1.4 sec
Deflection angle	12 ° - 4 °	6 ° - 3 °
Counting method	Fluctuation = time	Fluctuations and time
The decay time (glass)	Minimum 430 +/- 15 sec	250 +/- 10 sec
Weight	500 gram	200 gram

Specifications

Compliance with the standard

ISO 1522

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