Maintaining and recalibrating your Clarity Ozone Module

Particulate Filter Check and Replacement

The Clarity Ozone Module was designed for low maintenance operation in the field. The only check the customer will need to schedule is to inspect and replace the particulate filter if needed.   

The particulate filter blocks particles from contaminating the flow path. Depending on the particular matter concentrations in the ambient air, the filter may saturate and will need to be replaced periodically. Assuming a high average particulate matter ambient concentration (~50 μg/m3), the estimated filter lifetime is shown as a function of  the sleep time (sec) of the Clarity Node-S in Table 1. 

Table 1. Estimated Particulate Filter lifetime 

Sleep time (sec)	% operation	Particulate Filter Lifetime
1	33%	3 months
300	17%	6 months
600	11%	9 months
900 (default)	8%	1 year

Because the actual particulate concentration will vary by site, we recommend checking the filter after 2 months of ozone module operation and replacing the filter. 

Particulate filter replacement can be performed by the customer. A video on how to replace the particulate filter  can be found below: 

To ensure the filter was replaced properly, a zero check should also be performed afterwards. A video on how to perform a zero check is forthcoming!

Recalibration of the Ozone Module

We also recommend a recalibration every two years, which requires sending the unit back to be completed. To start this process, please contact us at support@clarity.io.