Pendulum Damping Tester Model 299/300
PERSOZ & KÖNIG PENDULUMS
Instruments based on the principle of pendular hardness: the damping time of a pendulum oscillating on a sample indicates its hardness.
The amplitude of the oscillations drops faster when the medium is soft.
The Persoz and König methods differ by the dimension, period and oscillations amplitude.
Purpose and Application
Pendulum damping tests with the Pendulum Damping Tester, Model 299/300, assess the mechanical damping properties of paints, varnishes and similar coatings.
The oscillations of a standardised pendulum placed on the test surface are damped in proportion to the "softness" of the coating.
Design and Function
The stand appliance consists of a support and a base plate with levelling screws.
The support holds a specimen holder for test panels measuring up to 250 x 100 x 15 mm.
The instrument is protected against dust and draught by an acrylic glass hood which has openings for positioning the specimens.
The pendulum damping tester is operated from a control terminal located outside the housing.
As optional accessories two different pendulums with yokes, made of rust-resistant steel, are available:
♦ Pendulum in accordance with König, conforming to DIN 53 157
♦ Pendulum in accordance with Persoz, conforming to NF T 30-016
The pendulum is automatically adjusted, avoiding timeconsuming fine-setting of the light barrier.
Two different measuring modules are available:
• Basic version
The excursion of the pendulum is effected manually by way of a lever mechanism. The pendulum is actuated by way of cable release.
• Automatic version
The excursion and actuation of the pendulum are effected automatically.
The automatic version offers the following additional advantages:
♦ user-friendly operation
♦ consistent test results
♦ simple change of pendulum type
In both versions the pendulum type is entered on the control terminal. Readings on the 4-digit LC display show alternatively
♦ the number of oscillations
♦ the length of test, or
♦ the period of oscillation
- Stainless steel pendulum, weight 500 g, fitted with 2 balls measuring 8 mm Ø.
- Oscillation period: 1 s., deflections from 12° to 4°.
- Damping time on glass: minimum 430 ± 10 s.
- Stainless steel pendulum, weight 200 g, fitted with 2 balls measuring 5 mm Ø.
- Oscillation period: 1.4 s., deflections: 6° to 3°, number of oscillations: 179 ± 3.
- 2 counting methods: oscillations or time.
- Damping time on glass: 250 s. ± 4.2.
Dimensions: Height: 700 mm Width: 325 mm Depth: 345 mm
Net weight: approx. 17 kg
Measuring Module (basic version):
Dimensions: Height: 60 mm Width: 235 mm Depth: 70 mm
Net weight: approx. 0.5 kg
Measuring Module (automatic version):
Dimensions: Height: 65 mm Width: 235 mm Depth: 107 mm
Net weight: approx. 0.75 kg
Dimensions: Height: 35 mm Width: 167 mm Depth: 65 mm
Net weight: approx. 0.4 kg
Supply voltage: 230 VAC ± 10 %
Power consumption: 25 VA
Ref 101-0085.00.31 Pendulum Damping Tester 299/300 14
DIN, ISO, ASTM, BS, SIS, SNV, NEN
with protective acrylic glass hood, calibrating plate with Manufacturer's Test Certificate, without pendulum and measuring module
Necessary A c c e s s o r i e s (at option):
Ref 101-0432.01.32 Pendulum for measurements in accordance with König, incl. carrying case and Manufacturer's Test Certificate
Ref 101-0432.02.32 Pendulum for measurements in accordance with Persoz, incl. carrying case and Manufacturer's Test Certificate
Ref 101-0459.01.32 Measuring Module Basic Version, incl. Control terminal (manual pendel excursion) and Manufacturer's Test Certificate
Ref 101-0460.01.32 Measuring Module Automatic Version, incl. control terminal (automatic pendulum excursion) and Manufacturer's Test Certificate