The Ozone Meter AQ-500 is a highly accurate instrument for measuring ozone concentrations in the air. The Ozone Meter can be equipped with four different heads that vary in their measurement range. Furthermore, the ozone tester has sensor heads for other gases available, which are automatically recognized when plugged into the device. Thus, you can use the ozone tester in many different areas. The possibilities of the ozone tester extend the use of ozone in your processes for bleaching oils, greases, wax, paper, synthetic fibers, cellulose or textiles,within the paper, textile, or lubricant production industries. Another field of application for the Ozone Meter is in cleaning, disinfection and sterilisation of swimming pools, water treatment facilities or after fire damage or water damage. With a head for lower measurements of up to 0.150 ppm, you can measure ozone concentrations that have a negative effect on the mental state of humans. Thanks to the leading GSS technology of the sensors, the Ozone Meter is not only high precision, it also has a long lifespan. The unique possibility to refresh the sensors makes their maintenance more economical than the maintenance of other types of sensors. Depending on the model, the measured concentrations may be written to the internal memory of the Ozone Meter via an analog interface with a 0... 5 V output, or the output is transferred via a USB interface to a PC. Similarly, a remote kit is available as an option, allowing the Ozone Meter to take measurements in a secure room while the sensor is connected via cable to the Ozone Meter. Through simplicity of operation the alarm thresholds for the optical or acoustic signal can be changed in a very short time. In addition to the measured concentrations in the LCD display, which are displayed in ppm or mg / m³, the high and low alarms are shown.