> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/s2-radio-system-manual/s2-system-description/s2-pt100-pt1000-interface/sensors-installation.md).

# Sensors installation

To mount the sensors, it is necessary to open the enclosure by unscrewing four screws on the bottom of the enclosure.

<figure><img src="https://196065439-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FDnSLeSlKbF06gUExzr9m%2Fuploads%2Fe5ZdWaoslNk4mL9gbRwD%2Fimage.png?alt=media&amp;token=6b0548cd-05a3-46fb-9250-4404fed362e7" alt=""><figcaption></figcaption></figure>

The cables are then screwed into J2 and J4 connectors. A tie wrap shall be used on the grommet inside the box to create strain relief for the sensor cables.

<figure><img src="https://196065439-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FDnSLeSlKbF06gUExzr9m%2Fuploads%2FFEU6XM8ZxIamt4uw1O2E%2Fimage.png?alt=media&amp;token=5a7c434d-4eb6-436d-bc65-1e871241fc52" alt=""><figcaption></figcaption></figure>

<figure><img src="https://196065439-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FDnSLeSlKbF06gUExzr9m%2Fuploads%2F66MfVhraowgHlV8RkASb%2Fimage.png?alt=media&amp;token=faba647a-5ae1-4011-9e9e-75cbbdec5270" alt=""><figcaption></figcaption></figure>

<figure><img src="https://196065439-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FDnSLeSlKbF06gUExzr9m%2Fuploads%2FBqk7AGiXFNICf6j2thRb%2Fimage.png?alt=media&amp;token=b0d9d619-64a2-43da-a4b0-e9e8eb9e82cb" alt=""><figcaption></figcaption></figure>

The interface shall be used with 4 wire sensors but can be also used with 2 or 3-wire sensors. If 2-wire sensor is used, short the drive and sense pins of the sensor connector placing jumpers on pins 1-2 and 3-4 of the J3 (for J2) or J5 (for J4) headers. For the 3-wire sensor the jumper shall be placed only on the side where a single wire sensor is connected.

If there is only one sensor connected then the other input must be shorted to allow the measuring current to flow through the sensor as shown below.

<figure><img src="https://196065439-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FDnSLeSlKbF06gUExzr9m%2Fuploads%2Fe8r0NaEoa1HhEz8MwlMI%2Fimage.png?alt=media&amp;token=fbe6ce6f-04bc-4cc6-af60-1e4a07dc896a" alt=""><figcaption></figcaption></figure>

a


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://help.boomerang3.com/s2-radio-system-manual/s2-system-description/s2-pt100-pt1000-interface/sensors-installation.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.