Water treatment plants, paper mills, and chemical processing facilities that continuously use chlorine (Cl2) gas require a 24-hour continuous monitoring system. Cl2 can leak even during nighttime unmanned operations or process shutdowns, and failure to detect it early leads to major accidents. WANDI FIX800 is a fixed-installation multi-gas detector that simultaneously monitors up to 5 gases for continuous Cl2 leak detection.
Why Fixed Cl2 Detectors Are Essential
Portable gas detectors only function when carried by a worker. However, during nighttime unmanned operations, shift changeovers, or unexpected leak scenarios, only a fixed continuous detection system can respond immediately. Since Cl2 is heavier than air and accumulates at low levels, fixed detectors installed near gas generation points are essential.
Health Effects of Chlorine Gas
| Concentration (ppm) | Health Effects | Standard |
|---|---|---|
| 0.5 | Odor threshold, mild mucous membrane irritation | ACGIH TLV-TWA |
| 1 | Eye/nose irritation, onset of coughing | OSHA PEL |
| 3–6 | Severe respiratory irritation, chest tightness | Danger level |
| 430 | Fatal within 30 minutes (IDLH) | NIOSH IDLH |
WANDI FIX800: Fixed 5-Gas Simultaneous Detector
Simultaneous Detection of Up to 5 Gases Including Cl2
The FIX800 simultaneously measures up to 5 gases: Cl2, O2, CO, H2S, and EX. One unit covers complex multi-gas environments with independent alarm settings for each gas.
FIX-DS Display Integration — Pre-Entry Safety Check
The FIX800 integrates with the FIX-DS gas concentration display board, enabling workers to visually confirm Cl2 levels before entering a space. Pre-entry concentration verification is the cornerstone of serious accident prevention.
Prevention Scenario with WANDI FIX800
- 1FIX800 fixed near Cl2 pipelines, monitoring 24/7
- 2Nighttime leak detected immediately → alarm triggered
- 3FIX-DS board displays concentration, remote alert sent to manager
- 4Workers verify display before entry → safe isolation performed
- 5Incident averted, data logged for compliance records
A Closer Look at the WANDI FIX800
Below are real photos of the WANDI FIX800 fixed multi-gas detector.

