Alignment guide for the MSA IR5500 Open Path Gas Detector, covering required tools, alignment steps, and AJ mode details.
This guide provides step‑by‑step instructions for aligning the IR5500 Open Path Gas Detector. It lists the required tools, explains how to clear the path, measure distance, and adjust the source and receiver using fine‑adjust screws and magnets.
The document also describes the Percent Signal menu, the minimum acceptable signal level, and the AJ mode used on units built before July 2016, with recommended practices for achieving optimal signal performance.
| Standard Configuration Range | 20–100 m |
|---|---|
| Extended Path Range | 80–150 m |
| Minimum Percent Signal | 80 % |
You need a 5 mm Allen wrench, two 2.5 mm hex wrenches, a range finder or rolling distance measuring wheel, and optionally an alignment scope (P/N 329082‑1).
The absolute minimum signal is 80 %, though higher values are recommended for best performance.