FIX800 Fixed Gas Detector Installation in a Semiconductor Equipment Manufacturer's Cleanroom

This installation was carried out at a semiconductor equipment manufacturer that uses nitrogen continuously throughout its production process. Nitrogen (N₂) is a colorless, odorless gas that makes up approximately 80% of ambient air and has no inherent toxicity.

Its chemical stability makes nitrogen well suited for preventing product corrosion during manufacturing. However, even a non-toxic gas can displace oxygen when it leaks in an enclosed space, creating a risk of nitrogen asphyxiation. Many facilities install fixed gas concentration monitors to detect such leaks before workers are exposed to hazardous conditions.

The client requested both a detector and a real-time monitoring LED display for the cleanroom. Workers entering and working inside the space needed to verify gas levels before entry and continuously during operations. The display was customized with "Normal / Alarm" status text to allow instant visual assessment of the indoor air state.

[Indoor Real-Time Monitoring Display]

One detector unit was installed at a single point inside the cleanroom and connected directly to the main display panel. The installation point was selected to enable the earliest possible detection in the event of a gas leak.

Indoor installation:

The cleanroom has two entry points, so a display board was installed at each entrance for immediate visual confirmation. Both were positioned to be clearly visible at a glance.

Entrance displays — Point 1 & Point 2:

All wiring was routed through the ceiling and finished with molding to keep the installation clean and unobtrusive. The indoor detector's 24 V power and RS-485 communication were run to the main display panel inside the cleanroom; the two sub-displays at the entrances were then daisy-chained via RS-485 from the main panel. Applying 220 V power to the main and sub panels activates real-time gas concentration monitoring across all three displays.

Commissioning:

Following installation, commissioning was conducted to confirm normal operation of all units.

The FIX800 fixed gas detector supports up to 5 gases simultaneously (using up to 4 sensor slots, with CO+H₂S available as a dual sensor occupying one slot). The FIX-DS display panel can be configured with additional channels to match the FIX800 sensor combination. The display is an optional accessory; the FIX800 alone provides effective gas hazard prevention.