Plastic pendulum impact tester Model 305/I

Short description
The Impact Testing Device – Wegner type, Model 305, is designed for on-site testing of enamel coatings in accordance with DIN 51 155 and ISO 4532. Its compact, hand-held design allows testing directly on components without disassembly, enabling evaluation in the real position of use and access to otherwise inaccessible enamel areas.

Execution of Test
Set the desired test force by turning the handle and read the value on the lower longitudinal scale (0 - 90 N) and the 1 N increments on the grip scale. The upper scale gives approximate values in Nm. When tensioning the spring, pull back the tension lever until it locks into the trigger. Hold the device vertically with the point resting on the enamel surface; on flat surfaces the point and the two legs form a three-point support. If the legs hinder testing on uneven surfaces, they can be rotated away or removed by loosening the three small knurled screws. For edge testing, place edges into the vertically aligned grooves at the point. Position test specimens to reflect real use and avoid tightly clamping small or lightweight items. Release the impact bolt by pressing the trigger lever.

CAUTION!
At test forces of 30 N or more, do not fire the impact bolt without an object—always ensure the bolt strikes a specimen.

Maintenance
Maintain the device regularly with suitable corrosion protection and light lubrication to ensure reliable operation.

Standards

• ISO 4532
• DIN ISO 4532
• (DIN 51 155)

Characteristics / technical specifications

• Drive: Manual
• Trigger: mechanical
• Ball diameter: 5 mm
• Testing force: 0 - 90 N
• Tension device: mechanical
• Measuring range: 0 - 90 N, infinitely variable
• Length of instrument: 245 mm (not under tension)
• Portable / Stationary: Portable
• Weight, net (Instrument): approx. 340 g
• Weight, net (Stand for tests on enamel): approx. 25 g
• Weight, net (Support Ø 120 mm for tests on plastics): approx. 3000 g
• Model designation: Model 305 according to Wegner