Professional ozone meter HT520

Professional ozone monitoring indoors and outdoors

The HT520 measures O3 concentration while also monitoring temperature and humidity, helping you verify air conditions during and after ozone disinfection. Its internal fan draws ambient air toward the sensor for more accurate real-time readings, while historical measurement recording supports continuous 24-hour monitoring.

Key features

• Detects residual ozone during or after disinfection, helping verify when the treated area has reached the required concentration level
• User-adjustable O3 alarm threshold warns when ozone concentration is elevated
• Built-in fan draws ambient air to the sensor for more accurate real-time measurement
• Records and saves historical measurements for continuous 24-hour monitoring
• Measures ozone concentration, temperature and humidity with one compact device
• 71.1mm color LCD with 320x240px resolution provides clear readings
• 2000mAh lithium-polymer battery, 5V Micro USB charging and low-battery warning support mobile use

AQI ozone concentration assessment

• 0–0.100ppm: Good
• 0.100–0.300ppm: Moderate
• 0.300–1.000ppm: Weak
• 1.000–4.999ppm: Bad

Technical specifications

Application and positioning

Use the meter during or after ozonation to detect residual ozone and monitor the disinfection process. Proper disinfection requires maintaining the ozone concentration for at least 30 minutes. For static manual measurements, place the device where ozone and air can circulate freely.