Biuged BGD 509 Pendulum Hardness Tester

The Biuged BGD 509 Pendulum Hardness Tester measures the hardness of coatings by evaluating the damping time of a pendulum oscillating on the coated surface. The softer the coating, the faster the oscillation amplitude decreases. The instrument supports both König and Persoz test methods and conforms to major international standards. A precision pendulum is placed on the coated surface and set into oscillation. The tester measures the time or number of oscillations required for the amplitude to decrease between two specified angles:

• Persoz method: amplitude decreases from 12° → 4°

• König method: amplitude decreases from 6° → 3°

Harder coatings allow the pendulum to oscillate longer; softer coatings dampen the motion more quickly. The BGD 509 automatically records the damping time or oscillation count using light‑sensitive sensors.

Key Features

Standards‑Compliant Dual‑Method Operation

Supports both König and Persoz procedures and complies with:

• ISO 1522

• ASTM D4366

• BS 3900‑E5

• DIN 53157

• NBN T22‑105

• NF T30‑016

Automatic Timing & Counting

The instrument automatically records the damping time or oscillation count and stops the test when the preset threshold is reached.

High‑Precision Pendulums

Machined pendulums ensure excellent stability and repeatability, providing reliable comparative hardness results.

Stable, Low‑Vibration Test Platform

A specially designed lifting platform securely fixes the specimen and prevents vibration during oscillation.

User‑Friendly LCD Interface

A clear LCD operator interface allows easy selection of test mode, recording method, and measurement parameters.

Environmental Protection for Accuracy

A Perspex cover shields the pendulum from air flow, improving measurement stability.

Calibration Certificate Included

Each unit is supplied with a calibration certificate for traceability and quality assurance.

Technical Specifications

• Test methods: König / Persoz

• Automatic counter range: 0–999 oscillations

• Suitable substrate thickness: 0.3–6.0 mm

• Recording modes: Timing mode / Counting mode

• Sensors: Dual light‑sensitive sensors

• Includes: Perspex cover, precision spirit levels, calibration certificate

Ideal Applications

• Paint and coating hardness evaluation

• Industrial coating QC

• Automotive, appliance, and metal finishing

• R&D formulation comparison

• Comparative hardness testing across coating systems

Why Choose the Biuged BGD 509?

The BGD 509 delivers accurate, repeatable pendulum hardness measurements using both König and Persoz methods in a single instrument. Its precision‑machined pendulums, automatic timing/counting system, stable test platform, and airflow‑shielding enclosure ensure highly reliable results. For laboratories and manufacturers requiring standards‑aligned hardness evaluation, the BGD 509 provides a robust, professional‑grade solution backed by full calibration certification.