Installed Gases
Project Details
Wastewater treatment facilities are structurally full of underground and confined spaces, and are high-risk workplaces where hazardous gases are constantly generated during the decomposition of sewage and sludge.
Even though they may look calm on the surface, oxygen deficiency and toxic/explosive gases can build up inside at the same time, creating a fatal risk for workers.
For this reason, hazardous gas measurement at wastewater treatment facilities is not optional — it is an essential safety management requirement.
Major Hazardous Gases Generated at Wastewater Treatment Facilities
- Oxygen (O2) deficiency: Risk to the human body begins at 18% or below; risk of death by asphyxiation at 10% or below
- Hydrogen sulfide (H2S): Causes olfactory paralysis even at low concentrations; risk of immediate death at high concentrations
- Carbon monoxide (CO): Colorless and odorless; interferes with oxygen transport, causing a rapid decline in consciousness
- Methane (CH4, LEL): Risk of explosion/fire once the lower explosive limit is reached
- Carbon dioxide (CO2): Causes breathing difficulty and loss of consciousness at high concentrations
Hazardous gases cannot be judged by smell, color, or how the air feels, and the mistaken assumption that "it looks fine" is how major accidents begin.
Fixed Hazardous Gas Detector FIX800


FIX800 is a fixed multi-gas hazardous gas detector optimized for representative confined spaces such as wastewater treatment facilities, septic tanks, manholes, and pits.
- Simultaneous multi-gas measurement: O2 / CO / H2S / LEL / CO2 (configuration can be customized to the site)
- Real-time alarm system: Immediate alarm activation when a dangerous concentration is reached
- Designed for long-term continuous operation: Stable operation even in sewage, humidity, and gas environments
- External device interlocking: Can be linked with warning lights, buzzers, ventilation fans, and shutoff systems
Gas Concentration Display Board — the "Control Tower" of Wastewater Treatment Facility Safety


The gas concentration display board is not simply a display device — it is a core safety management device that shows the entire facility's hazard status at a glance.
Role of the Gas Concentration Display Board
- Real-time visualization of gas concentrations
- Immediate hazard awareness before workers enter
- Focused monitoring and integrated management for managers
- Visible safety documentation during safety training and inspections



