Dahua 3000 Series User Manual

Dahua 3000 Series User Manual Manual pdf 50 page image

Cleaning and Maintenance 507 Cleaning and MaintenanceThis chapter mainly introduces cleaning and replacement of color filter.We have installed a fully transparent protective glass for the mono camera with the mainpurpose to prevent dust falling on the surface of image sensor. The color camera isequipped with a low-pass filter that cuts off to the near-infrared band. If you havespecial requirements, such as not using a color filter or using another light-transmittingfilter, you can replace the entire filter mount of the image sensor (no need of removingthe cover) .If the surface of the filter needs to clean, We recommend using the special cleaningagent for optical devices that can clean the surface without leaving a mark.

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