Features: gas permeability tester Model N500 adopts the principle of the differential pressure method to measure the permeability of the packaging film’s oxygen, carbon dioxide and nitrogen gas, etc. Computer controlling can finish the whole test process automatically. The software design adopts the international advanced processing method of data statistics, with accurate temperature control and moisture analog. The operating interface is concise and literal with easy maintenance. The testing data is accurate and the performance stable and reliable. It is the ideal choice for scientific research and measuring institutions, colleges and universities and packaging plants. Tech details: Test chamber: one chamber with a sensor Testing temperature: 15℃~45℃, precision: ±0.1℃ Humidity range:0%~98%RH, precision: ±0.1%RH, Dry: 0%RH Testing Gas: N2, CO2, H2, O2, He etc. Testing pressure: -0.1Mpa~0.1 Mpa Testing area: 50.24cm2 Calibration of Gas: Yes Calibration of Film: Yes Gas leak protection: Yes Enclosure: epoxy coated heavy gage steel. Instrument Dimension: 68 cm×51 cm×35 cm Instrument Weight: 30KG Dimension after wooden pack: 98 cm×81 cm×65 cm Weight after wooden pack : 45 Kg. System requirements: P4 processor or processors with larger capacity, Windows (W2000,W2003,XP,VISTA) or Windows with 64MB or RAM, 16 BIT color 15” display, 40GB HD space. Attached with a color printer, supporting A4 size. Communication port: RS232,USB and LAN Power Requirements: Voltage:220V AC/50 Hz/120W. (3-4 electric points, 5A-15A) Operating Table: Static and firm, testing area: 125.20 cm2 99.99+% gas (N2,H2,CO2,etc.) with regulators (pressure reducing valve) 99.9% or 200ppm Oxygen with regulators (pressure reducing valve) 1/8 inch copper tubing (3-5 m, short distance from gas cylinders to instrument is recommended) Gas pressure: 25 to 45 PSI Gas fitting: 40cc/minutes standard RS232 and USB, LAN communication interface.