> For the complete documentation index, see [llms.txt](https://mapir.gitbook.io/daq/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mapir.gitbook.io/daq/daq-e/caps-and-mounting.md).

# Caps & Mounting

## Caps

The DAQ-E accepts interchangeable snap-on caps that change how it sees light. Tell Chloros which cap is installed so it applies the correct correction profile.

| Cap                             | Field of View | Use                                                                                                                                                                                                   |
| ------------------------------- | ------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Sunshine** (cosine corrector) | <180°         | Ambient / downwelling irradiance. Diffuses incoming light and reduces intensity so bright sources such as direct sunlight don't over-saturate the sensor. This is the default cap assumed by Chloros. |
| **90°**                         | 90°           | Reflected light from a target                                                                                                                                                                         |
| **45°**                         | 45°           | Reflected light — narrower target area                                                                                                                                                                |
| **15°**                         | 15°           | Reflected light — most selective target area                                                                                                                                                          |
| **Bare sensor**                 | —             | Low-light environments. The DAQ-E remains IP67 waterproof with no cap installed.                                                                                                                      |

Use the **Sunshine** cap when recording the ambient light spectrum to correct camera images, and a **field-of-view** cap when measuring the light reflected from an object or reference target.

## Waterproofing

The DAQ-E is **IP67 waterproof** and built for permanent outdoor installation — rain or shine. The Ethernet connection passes through a **field-serviceable waterproof cable gland**, which you can open and reseal yourself to route or replace the cable.

<figure><img src="/files/pw4cQBBDrY7oyzvoPKmX" alt=""><figcaption><p>The field-serviceable cable gland: the internal RJ45 Ethernet connector, gland body, sealing grommet, and cap nut</p></figcaption></figure>

## Mounting

For ambient light monitoring, mount the DAQ-E where it has a clear, unobstructed view of the sky and orient the **Sunshine** cap upward to capture downwelling light. Keep the sensor clear of shadows, reflective surfaces, and nearby structures that could block or bounce light into the cap. Because power and data share one PoE cable, a single run of Ethernet is all that needs to reach the mounting location.

<figure><img src="/files/IQVFljKClszWhW8g2Q7R" alt=""><figcaption><p>The DAQ-E mounted on a tripod with the sensor oriented upward</p></figcaption></figure>