Performance by Design for Reliable Ozone Measurement

Aeroqual ozone sensor technology is founded on 30 years of research and expertise. The newest generation incorporates Analytic Gas Sensitive Semi-conductor (GSS) Technology, a unique and proprietary implementation of sensor design and software integration for reliable performance out of the box. Active sampling, smart measurement techniques and careful component selection form an integral part of Aeroqual sensors’ high quality performance. Analytic GSS delivers reliability, stability, rapid response, long life and wide operating parameters (measurement range, temperature and humidity). Aeroqual sensor design manages the variables in ozone monitoring so results are always accurate and precise with excellent sensitivity providing scientific measurements of ozone concentrations.

We Take the Guesswork out of Ozone Sensor Calibration

Aeroqual’s philosophy is clear, to provide accurate ozone measurements every time. Every sensor is subjected to rigorous factory calibration. Procedures are NIST traceable and performed by gas measurement specialists so there is no guessing or work on your part. Simply plug in a new sensor head, warm it up and obtain accurate and precise readings. Since sensor life is finite, it is recommended that they are replaced with factory calibrated sensor heads on a yearly basis. It is possible however that operating conditions during use may prematurely degrade sensor performance and produce questionable results. Aeroqual has the tools that allow you to assess, verify and correct sensor head performance for on-going assurance of reliable measurements.

New Tools Assure the Integrity of Your Ozone Measurements

The Aeroqual R70 Zero Air Source and the Aeroqual R71 Ozone Source have been designed to assess your handheld and fixed monitor sensor performance and re-calibrate it, if necessary. In their basic application the R70 and R71 can be used to check the zero point (R70) on the sensor and then to “bump” test it for a response to ozone (R71). This simple process indicates that a sensor is active and responding to ozone. If the performance of a sensor head is suspect, it can be further evaluated and calibrated using the R70 and R71 in conjunction with a “reference” ozone head and an Aeroqual S500 handheld monitor that has been software enabled to perform a span adjust (or an R950 calibration base). A ”reference” sensor head is a sensor head that has been recently factory calibrated to the same ozone range as the sensor in question and dedicated for this use only. Since the heads are rigorously calibrated at the factory with NIST traceable procedures they can be used as a transfer standard to re-calibrate the heads in question (see procedure details). It must be noted that by performing this process you are changing the calibration of the suspect head (re-calibrating). This should not be taken lightly, you are performing a calibration, and careful attention should be paid to follow procedures properly so that the resultant calibration adjustment is correct. It is strongly recommended that you use a reference head that has been factory calibrated within the past 6 months so that there is a high level of confidence in the adjustment. Keep in mind that not all heads will be able to be re-calibrated as their performance may have deteriorated to an unrecoverable condition through time or operational circumstances.

If and when it is not possible to re-calibrate using the span calibration technique, you can be confident that an Aeroqual factory calibrated replacement sensor will do the job. With easily replaceable pre-calibrated heads and assessment and adjustment tools and protocols you can be assured that your Aeroqual ozone monitors will always be running and giving you the right measurement every time.