Versions of PMD02

The PMD02 supports three basic test methods:

1. The differential pressure method
   In this case, the pressure drop or pressure rise is measured with a differential pressure sensor (high resolution)
2. The Relative Pressure Method
   In this case, the pressure drop or pressure increase is measured with a relative pressure sensor (low Resolution)
3. The mass flow overflow method
   In this case, the test part is filled very quickly from a buffer volume and then the downstream air stream is measured with a mass flow sensor.
4. The mass flow post-flow method
   The test part and the buffer volume are simultaneously filled with the nominal test pressure. Subsequently, the downstream air stream is measured with a mass flow sensor. Pressure ranges from vacuum to max. 1000 kPa with the highest resolution possible
   

It supports the following pressure ranges:

• Negative pressure (vacuum)
• Overpressure 50kPa
• Overpressure 100kPa
• Overpressure 600ka
• Overpressure 800kPa 
• Overpressure 1000 kPa
• Overpressure 1600kPa (special version)
• Overpressure 2000kPa (special version)

Other pressure ranges between the above-mentioned are available on request.

The following pressure ranges are supported in the mass flow overflow method:

• Overpressure 100kPa
• Overpressure 160kPa
• Overpressure 600kPa
• Overpressure 1000kPa 

Vacuum has also been conditionally possible in this process since 2014.

When selecting the appropriate test method some things have to be checked. This is best done in consultation with APT:

• The nature of the test volume is involved (e.g., plastic, metal, etc.)?
• How big is the test volume?
• Which test pressure should be used?
• Which limit leakage should be reliably detected?
• Which cycle time should be reached?
• Is there a preferred pressure-acting direction in the test part?
• Does the test part have a possibility to connect a test tube?

Please answer all questions and pass this information to APT in REQUEST. You will immediately receive a suggestion for the optimum inspection of your parts.