Chlorine (Cl2) is an oxidizing toxic gas widely used in water treatment, paper/textile bleaching, chemical production, and semiconductor etching processes. Even at 1 ppm, it causes irritation symptoms; above 10 ppm, it becomes life-threatening. The WANDI EDW500 holds the IECEx international explosion-proof certification (IECEx TPS 25.0057X) and simultaneously measures 5 gases including Cl2, providing real-time protection for workers.
What is Chlorine (Cl2) Gas?
Chlorine (Cl2) is a yellow-green gas with a pungent odor. It is 2.5 times heavier than air, accumulating at ground level and in low-lying areas. Main application areas include water disinfection, chlorine-based chemical production, paper/textile bleaching, and semiconductor etching.
Health Effects of Chlorine Gas
| Concentration (ppm) | Health Effects | Risk Level |
|---|---|---|
| ≤0.5 | Detectable odor, mild irritation | Low |
| 1–3 | Eye, nose, throat irritation; coughing | Caution |
| 3–10 | Severe coughing, chest pain, dyspnea | Warning |
| 10–25 | Pulmonary edema, serious respiratory damage | Danger |
| ≥430 | Fatal within 30 minutes (IDLH) | Immediately Dangerous |
Source: NIOSH, ACGIH TLV-TWA: 0.5 ppm, OSHA PEL: 1 ppm
WANDI EDW500: The Perfect Solution for Cl2 Sites
IECEx-Certified Explosion-Proof Safety
The EDW500 holds IECEx TPS 25.0057X certification issued by TÜV SÜD. Its explosion-proof rating is Ex da ia IIC T4 Ga (Zone 0, EPL Ga), making it safe to use even in Zone 0 — the most hazardous explosion-proof classification. Ideal for chemical plants, water treatment chemical storage, and all environments where Cl2 explosion-proof ratings are required.
5-Gas Simultaneous Measurement — Including Cl2
A single EDW500 simultaneously monitors up to 5 gases: Cl2, O2, CO, H2S, and EX (combustible gas). In chlorine process environments, oxygen depletion and Cl2 spikes can occur simultaneously, making multi-gas detection essential.
Prevention Scenario with WANDI
- 1Worker carries EDW500 into Cl2 pipeline inspection zone
- 2Cl2 exceeds 1 ppm → instant vibration, audible, and LED alarm
- 3Real-time alert sent to manager via cloud monitoring system
- 4Worker evacuates immediately → leak point identified and isolated
- 5All measurement data auto-saved to cloud for incident analysis and prevention
🏆 IECEx International Explosion-Proof Certification
Certificate: IECEx TPS 25.0057X | Certifying Body: TÜV SÜD | Rating: Ex da ia IIC T4 Ga | Zone: Zone 0 (EPL Ga)
A Closer Look at the WANDI EDW500
Below are real photos of the WANDI EDW500 portable multi-gas detector and its use on site.
