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JDC - Model MK2 -Porosimeter
This porosimeter has been developed and is manufactured in Switzerland by JDC Electronic SA following a very strong demand from paragliding manufacturers, mainly for safety reasons. This instrument has quickly become the reference to measure porosity.
Principle
Passing a defined volume of air through a fabric to measure its porosity. The porosimeter measures the time required for 0.25 litres of air to pass through 38.5 cm2 of tissue under a pressure of 10 mbar. The result in seconds can be converted to litres per m2 per minute (l/m2/min).
- Fabric manufacturers
- Free flight schools
- Manufacturers of paragliders
- Balloon users
- Paper manufacturers
Fields of application
- Quick test of porosity, for example in the manufacture of paragliders, hot-air balloons, spinnakers, etc.
- Measures the degradation of a fabric to warn the user about safety or performance issues.
- Assessment and control of used equipment.
- Tissue study in the laboratory.
- Time in seconds
The measuring pressure of the MK1 is 100 mm of water (10 mbar or 10 hPa). Result is given in seconds (necessary time for 0.25 liter of air to go through 38,5 cm2 of fabric under a pressure of 10 mbar.
Formula to convert porosimeter MK2 values in
- Industry standard n°1
- (liter per m2 per min) (pressure of 200 mm of water)
- 5400 / time in seconds
- (divide 5400 by the time displayed on the MK2)
- Industry standard n°2
- (cm3 per cm2 per sec) (pressure of 200 mm of water)
- 9 / time in seconds
- (diviser 9 by the time displayed on the MK2)
- Probe with adapter for MK1 porosimeter
- Probe for MK2 porosimeter
- Plate for probe