Air permeability sensor AP3N
High precision measurement of the air permeability of porous materials.
Fulfills DIN EN ISO 9237.
Measurement principle is absolutely free of air leakage – patent DE4217682.
High dynamic ONLINE measurements inside the production line.
Static lab measurements (lab measurement unit).
- Measurement procedure runs continuously and can be automated.
- User selectable test pressure.
- Integrated temperature and humidity compensation.
- High product speed of up to 300 m/min.
- Traversing speed of up to 50 m/min.
- Products: techn. textiles, felts, fleece, screens, filter, paper ...
Art. No. | ||
AP3N-OS | 810130 | |
Optional: | ||
Measurement range expansion to max. 1000 cfm | 810132 |
Measurement principle
Theoretical measurement
The air permeability measurement is defined in the following way: A constant test pressure is applied and the air flow through the measured product at a given measurement area is interpreted as the result.
Real measurement
The product to measure is porous and therefor permeable from all sides. These properties is related to the product thickness, without countermeasures it leads to an unwanted air leakage. Different surface properties do also highly affect the measurement results as a uncontrolled air leakage.
Measurement principle AP3N
By using a pneumatic guard, the problems described above can be solved. A concentric ring chamber is used, where the same pressure as under the measurement area is created. Because there is no flow in equal pressure relations, the ring chamber takes all unwanted air leakage.
Measurement head
Two separate, high-dynamic regulated air pressure systems.
Strong vacuum pumps using the ejector principle.
no rotating parts.
Maintanance-free, air-beared, high-dynamic proportional valves.
Self-compensating, high precision fine pressure sensors.
High precision air flow measurement using a Laminar-Flow-Element (LFE).
Integrated temperature and humidity compensation.
Technical data
- Standard measurement range up to 500 cfm at 0.5 inch w.c. Resolution 0.1 cfm<br /> or up to 1500 l/dm²*min at 200 Pa.
- Optional: Measurement range up to 1000 cfm or up to 80 cfm.
- Test pressures of all known test norms available.
- Optional: any test pressures up to 1000 Pa.
- Supply 24 V DC.
Accuracy
- Linearity ±1%.
Communication
- Via Ethernet, optional RS232.
- Diagnostics software included.
Dimensions
Height 352 mm
Depth 350 mm
Width 350 mm
Plate 350x350 mm
Weight 20 kg
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