You are here:

Gas Permeability Tester GDP-C

Gasdurchlässigkeits-Prüfgerät GDP-C

Gas Permeability Tester GDP-C

… is designed for testing the permeability of films. It supports an extended temperature range through external water bath circulator.

How it works

The GDP-C is designed for testing the permeability of dry gases on films and similar materials according to the manometric principle. The sample is put between the top and bottom part of the permeation cell. The volume of the bottom part is as small as possible and known. Prior to each test the bottom part of the permeation cell is evacuated. During testing the top part is filled with the test gas. The gas permeating the material causes a pressure increases at the bottom part of the permeation cell. You can detect the gas permeability by evaluating this increase in pressure in relation to time and the device-specific volume. The increase in pressure during the test period is evaluated and displayed by an external computer. The PC is connected to the GDP-C with a serial interface. You can adjust the sample temperature within the range of -20 °C and 80 °C using an external thermostat.

The GDP-C software allows you to control the following processes:

  • Setting parameters for different test procedures
  • Viewing a graphical representation of the test procedures
  • Printing charts with the test graph
  • Saving your results in Microsoft Access databases
  • Retrieving and editing graphs and results from previous tests.
  • Saving edited graphs
  • Saving, retrieving and printing special test data (such as pre-conditioning).

Technical Details

Test methodQuantitative determination of the gas permeability of film materials using differential pressure (manometric method)
Test gasAll non-corrosive and non-flamable gases
Recommended gas flow60 to 100 cm³/min
Measuring Range0.5 cm³/(m²×d×bar) to 30,000 cm³/(m²×d×bar)
Resolution0.1 cm³/(m²×d×bar)
Main pressure sensorpiezoresistive element, temperature stabilised
    Measuring range0 hPa to 1100 hPa
    Tolerance (absolut)< 0.3 % of the final pressure (1000 hPa)
    Resolution0.01 hPa (display) , 21 Bit (internal)
    Data storageup to 4096 test values (with dynamic time interval selection)
Pressure absorption gaugepiezoresistive element (0 hPa to 2000 hPa)
    Tolerance< 1% of the final pressure (1000 hPa)
    Resolution (display)0.1 hPa
    Data storageup to 512 test values (width dynamic time interval selection)
Sample temperature range-20 °C to 80°C (with external thermostat)
    Tolerance ( temperature sensors)+/- 1.5 °C
    Resolution of the temperature display0.1 °C
    Data storageup to 512 test values (with dynamic time interval selection)
PC interfaceserial interface RS232, 115.200 Baud
Dimensions50 x 31 x 74 cm
Weight20 kg
Storage temperature0 °C – 50 °C
Working temperature20 °C – 26 °C (to be constant during operation when testing films with a low GTR)
Relative humiditymax. 80 %, non-condensing
Electrical connection GDPC230 V / 50 – 60 Hz, power consumption ca. 50 W, approx.
Electrical connection PC230 V / 50 – 60 Hz, power consumption ca. 50 W, approx.
Electrical connection monitor230 V / 50 – 60 Hz, power consumption ca. 150 W, approx.
Electrical connection(Thermostat)230 V / 50 – 60 Hz, power consumption ca. 2300 W, approx.
StandardISO 15105-1 / ASTM D1434-82(2015) procedure M

Accessories

Vakuumpumpe
Vaccum pump
Thermostat
Termostate
PC
PC

Matching devices