Pendulum hardness tester

tqc-sheen-sp0500-mayatnikovyy-tverdomer.jpgTQC Sheen SP0500 Hardness TesterTQC 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.


Description

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

Specifications

Compliance with the standardISO 1522
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