GAS PERMEABILITY TESTER

GJ1

With the GJ1 Gas Permeability Tester, you can reliably determine the gas permeability of green sand test specimens in accordance with VDG guidelines. Gas permeability is a key parameter in molding sand testing, as it indicates how effectively gases can escape from the mold during the casting process. This helps ensure stable molding conditions and supports consistent casting quality.

Technical Data

Measuring Range

Maximum Load: 1200 N/cm²

Bending Strength: 2400 N/cm²

Compressive Strength: 61 N/cm²

Splitting Strength: 45 N/cm²

Shear Strength: 45 N/cm²

Double Shear Strength: 30 N/cm²

Test Speed

1 mm/min – 300 mm/min

Measurement Accuracy

1% FS

Dimensions

220 × 180 × 310 mm (H × W × D)

Weight

24 kg

Option

Data Transfer Interface

Precise Gas Permeability Measurement

The GJ1 accurately measures the gas permeability of standard test specimens by passing a defined airflow through the sample. Automatic calibration compensates for changes in air pressure and temperature, ensuring reliable and reproducible results. Measurement values are displayed digitally for clear and precise readings.

Modern Measurement Technology Instead of Water-Based Testing Devices

Many foundry laboratories still use gas permeability testers that operate with water columns. These systems require more maintenance and are more susceptible to operator errors. Incorrect handling or contamination can affect measurement results. The GJ1 operates without water, providing greater process reliability and reducing maintenance requirements. Its digital display improves readability and simplifies the interpretation of measurement data. A memory function also stores the last measured value for added convenience. Accurate gas permeability control plays a key role in preventing gas-related casting defects and ensuring consistent casting quality.

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Together, we define your requirements, operating conditions and project objectives. Based on this, we develop the right measurement solution tailored to your application.