Key facts
- Manuals
- 3
- Languages
- EN · ZH
- Last added
- 2026-09-30
Featured MS­A manuals

MSA IR5500 Open Path Gas Detector Alignment Guide
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.
Covers: Tools Required · Clear Path and Measure Distance · Alignment Procedure · Percent Signal Menu · AJ Mode Alignment

Fuguang MS-A Series Security Box User Manual
The MS‑A series security box provides configurable digit displays (1‑6 位) and a high‑volume alarm (80 dB) for reliable protection. It operates on a 6 VDC power source and supports external alarm interfaces such as YBJ, WBJ and LBJ.
The manual explains installation steps, battery replacement (R14 type), emergency reset procedures, safety tips, and common fault troubleshooting, helping users set up and maintain the device safely. This manual is written in Chinese.
Covers: Features · Operation · Alarm Functions · Power and Battery · Emergency Reset · Safety Tips

MSA Orion Plus Multi‑Gas Detector User Manual
This manual covers safe handling, power‑on/off, reset, and basic operation of the Orion Plus multi‑gas detector. It explains how to perform sensor calibration, set alarms, and navigate the instrument menus.
Additional sections describe battery specifications, environmental limits, gas detection limits, and a detailed troubleshooting guide with problem‑action tables. This manual is written in Chinese.
Covers: Safety Instructions · Power On/Off and Reset · Operation Overview · Calibration Procedures · Battery Information · Gas Detection Limits
Latest MS­A manuals
MSA IR5500 Open Path Gas Detector Alignment Guide
User Manual 2 pages · 274 KB · ENAlignment guide for the MSA IR5500 Open Path Gas Detector, covering required tools, alignment steps, and AJ mode details.
Fuguang MS-A Series Security Box User Manual
User Manual 3 pages · 109 KB · ZHUser manual for the Fuguang MS-A security box, covering features, operation, alarm settings and troubleshooting.
MSA Orion Plus Multi‑Gas Detector User Manual
User Manual 18 pages · 774 KB · ZHThe MSA Orion Plus manual provides safety instructions, operation steps, calibration procedures, battery information and troubleshooting for the multi‑gas…
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in MS­A manuals
What tools are required to align the IR5500 detector?
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).
What is the minimum acceptable percent signal during alignment?
The absolute minimum signal is 80 %, though higher values are recommended for best performance.
What is the alarm sound level of the MS‑A?
The alarm emits a sound of about 80 dB.
How is the sensor calibrated?
Select the Calibration menu, then follow the on‑screen prompts for single‑sensor or multiple‑sensor calibration.
What type of battery does the Orion Plus use?
The device uses a rechargeable NiMH battery, available in 10 Ah and 6 Ah capacities.
