Ozone (O3) is a powerful oxidizing agent widely used in water purification, semiconductor cleaning processes, food sterilization, and medical device disinfection. However, even at 0.1 ppm, it begins to irritate the respiratory tract, and at high concentrations it causes pulmonary damage. The WANDI EDW500, certified with IECEx TPS 25.0057X international explosion-proof certification, simultaneously measures 5 gases including O3, protecting workers in any O3-generating environment.
What is Ozone (O3) Gas?
Ozone (O3) is an unstable triatomic molecule of oxygen with a distinctive sharp odor (similar to fresh air after rain). Its powerful oxidizing properties make it valuable for sterilization and deodorization, but this same property makes it highly toxic. Industrial O3 is generated by ozone generators, UV equipment, and high-voltage discharge devices.
Health Effects of Ozone
| Concentration (ppm) | Health Effects | Risk Level |
|---|---|---|
| 0.01–0.05 | Detectable characteristic odor | Detection |
| 0.1 | Eye/nose/throat irritation, headache | Caution (OSHA PEL) |
| 0.3–0.5 | Coughing, chest pain, reduced lung function | Warning |
| 1–10 | Severe lung damage, asthma exacerbation | Danger |
| ≥10 | Immediately life-threatening (IDLH) | Immediately Dangerous |
Source: NIOSH IDLH: 10 ppm, OSHA PEL: 0.1 ppm, ACGIH TLV-TWA: 0.05–0.1 ppm
WANDI EDW500: Optimal Solution for O3 Sites
IECEx Explosion-Proof Certification — Zone 0 Safe
The EDW500 holds IECEx TPS 25.0057X certification from TÜV SÜD with explosion-proof rating Ex da ia IIC T4 Ga (Zone 0, EPL Ga). It can be safely used even in high-risk environments where oxidizing gases like O3 are constantly present.
5-Gas Simultaneous Measurement Including O3
A single EDW500 simultaneously monitors up to 5 gases: O3, O2, CO, H2S, and EX. In ozone treatment zones, O3 concentration spikes can occur simultaneously with oxygen level changes, making multi-gas detection essential.
🏆 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.
