How do I check for leaks in smoke filtration equipment?

I. Apparatus: Dust particle counter.

II. Principle: This experiment applies the principle of light scattering.
The counter uses the principle of photomultiplier tubes to accept light reflected from dust particles to determine their size and number and to analyze them scientifically.

III. Requirements

1、Environment: the surrounding temperature should be controlled between 18 - 26°C and the relative humidity between 45 - 65%.

2、Status: The test should be carried out in a static environment, with no more than 2 persons involved.

3、Differential pressure: for different cleanliness, the static pressure difference is generally 5Pa, and the static pressure difference between the clean area and the non-clean area is 10Pa.

IV. Method

1、Disinfect the instrument counter with water and 75% alcohol before passing it into the clean area after about 30 minutes of UV irradiation.

2、Place the counter horizontally on the table and connect the plastic pipe port for measurement to the nozzle of the filter device.

3、Turn on the power and the device will start testing automatically.

4、Afterwards, observe the data displayed.

5、Turn off the power supply after the test.

V. Conclusion

Through the above experiments, we can see which filter leaks, are required to plug the leak or replacement, in addition, to repair or replacement of these devices must also be re-tested.
Under normal use, tests should generally be carried out at least once a year to see if the performance of the equipment has changed.