How to Change Filters on Your Dust Monitor?

Changing Filters for Aeroqual’s Dust Sentry & AQS1 Dust Monitor

Today I’m going to show you how to change your dust monitor filters on your dust monitor, either inside the AQS1 or Dust Sentry by Aeroqual. Let’s have a look inside.

To change the filters, you simply need a screwdriver or a coin.

There’s two dust filters to change on the nephelometer:

• There’s the sample line at the top
• And the purge line at the bottom.

Sample Line

So I’m going to show you the sample line. Just unscrew it so there’s a small white filter that simply comes off, you put a fresh one back on, we have filters in the service and calibration kit for you.

Sample Lines & Purge Lines are Similar

This sample and purge lines are similar. The filter is a different size, so you can’t get the two confused, it’s a slightly different color as well. So that’s the purge filter. Put that back in there, screw that tight, and that’s how you change your filters.

When should you change your filters?

We recommend changing your dust monitor filters every one to three months, depending on the site conditions. To hear about when you should change them, on the door is a cheat sheet, and it shows you filters at different conditions and when you should be looking to change them.

Now, it’s very important to change the filters, one, to ensure that the pump does not have any extra load, and secondly, to ensure no dust gets on the laser and interferes with your measurements.

This sums up how to change your dust monitor filters and when you should change them.