Water treatment facilities, food plants, and paper mills that use chlorine dioxide (ClO₂) operate around the clock. ClO₂ leaks can strike without warning even at night or on weekends when no workers are present. WANDI FIX800 is a fixed (stationary) multi-gas detector that simultaneously monitors up to 5 gases. Permanently installed in ClO₂ generation areas, it automatically detects leaks and raises alarms even during unmanned hours.
Why ClO2 Sites Need a Fixed Gas Detector
Portable gas detectors only protect workers when those workers are on site. But ClO₂ generators run 24 hours a day, and leaks from pipe defects or chemical overdosing during nighttime or unmanned hours can go undetected while concentrations climb to dangerous levels. The FIX800 is permanently installed and, as long as it has power, detects and alarms automatically 24 hours a day, 365 days a year.
💡 FIX800 Key Advantage
Simultaneous detection of up to 5 gases — combine ClO₂ with O₂, Cl₂, NH₃, CO, and others to match your site, building a comprehensive safety system with a single device.
Health Effects of Chlorine Dioxide
| Concentration (ppm) | Exposure Time | Health Effect | Risk Level |
|---|---|---|---|
| 0.01 | Continuous | Characteristic chlorine odor detectable | Watch |
| 0.1 | 8 hr (TWA) | Eye/nose/throat mucous irritation, coughing | Caution |
| 0.3 | Short-term (STEL) | Severe respiratory irritation, headache, nausea | Danger |
| 1–5 | Short-term | Pulmonary edema, severe bronchospasm | Severe Danger |
| 5+ | Immediately | Life-threatening (NIOSH IDLH) | IDLH |
※ Source: ACGIH TLV-TWA 0.1 ppm, NIOSH IDLH 5 ppm, OSHA PEL 0.1 ppm
Real Accident Case
ClO₂ Leak at an Ontario Water Treatment Plant, Canada (2017)
At a regional water treatment plant in Ontario, Canada, a ClO₂ generator defect during unmanned nighttime hours leaked gas into the machine room. A worker arriving the next morning detected a strong irritating odor and reported the emergency from outside; the ClO₂ concentration inside the machine room was found to exceed three times the OSHA PEL. Had a 24-hour fixed detector been installed, immediate alarm and ventilation activation would have been possible.
※ Source: Ontario Ministry of the Environment incident report, 2017
WANDI FIX800 — Fixed 5-Gas Simultaneous Detector
detected simultaneously
No gaps at night or weekends
Check from outside before entry
Installation Cases
What If FIX800 Had Been Installed? — Prevention Scenario
- 1Fixed installation: Install FIX800 near the ClO₂ generator and at the machine-room ceiling (a position chosen for gas density).
- 2Nighttime auto-detection: The moment a leak occurs during unmanned early-morning hours and exceeds the setpoint, the siren and warning light activate automatically.
- 3Ventilation interlock: Connecting the FIX800 output signal to the ventilation-fan control panel triggers forced ventilation automatically the instant the alarm sounds.
- 4Pre-entry check: A FIX-DS display board mounted outside the door lets workers visually confirm the concentration before opening it.
FIX800 Key Specifications (ClO₂ Fixed Type)
| Item | Specification |
|---|---|
| Measurement type | Fixed (stationary) / diffusion or sampling type optional |
| Simultaneous gases | Up to 5 (combinations of ClO₂, O₂, Cl₂, NH₃, CO, etc.) |
| Alarm output | Relay output → interlock with siren, ventilation fan, warning light |
| Display board | FIX-DS LED display board connection (concentration visible before entry) |
| Power | AC 220V (continuous power / 24 hours, 365 days operation) |
| Installation location | Near the ClO₂ generator, machine room, chemical storage room, etc. |
A Closer Look at the WANDI FIX800
Below are real photos of the WANDI FIX800 fixed multi-gas detector.
