Device for testing filters, particularly sterile filters

Details Device for testing filters, particularly sterile filters Device for testing filters, particularly sterile filters

1982-04-29

1984-05-22

Goldberg, Gerald

Measuring and testing

With fluid pressure

Leakage

73 38, G01M 326

Patent

active

044493924

ABSTRACT:
A filter testing device has a filter housing which has an air inlet and outlet and receives the filter. An inlet line is connected to the air inlet. An inlet valve for the inlet line is controlled to produce a continuous and evenly increasing air pressure therein and an electronic pressure sensor monitors the air pressure therein. An electronic evaluating and control circuit has a time switch, an adjustable threshold device and a peak pressure detector, and controls the inlet valve, a vent valve connected to the inlet line, and a recording mechanism. The air pressure in the inlet line is increased until it reaches a preset pressure. The inlet valve is then closed for the time period set on the time switch. Thereafter, air is again supplied to the inlet line until no further pressure increases are detected by the peak pressure sensor.

REFERENCES:
patent: 3336793 (1967-08-01), Tuttle

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