{"id":877,"date":"2015-04-15T02:50:46","date_gmt":"2015-04-15T02:50:46","guid":{"rendered":"http:\/\/ozone-services.com\/?p=877"},"modified":"2015-04-15T02:50:46","modified_gmt":"2015-04-15T02:50:46","slug":"og-3-calibration-using-uv-100-ozone-analuzer","status":"publish","type":"post","link":"https:\/\/www.oxidationtech.com\/blog\/og-3-calibration-using-uv-100-ozone-analuzer\/","title":{"rendered":"OG-3 CALIBRATION USING THE UV-100 OZONE ANALUZER"},"content":{"rendered":"

Tech note from EcoSensors<\/strong><\/p>\n

The Eco Sensors\u00a0<\/span>UV-100<\/a>\u00a0<\/span>calibration can be fairly accurately monitored using the Eco Sensors\u00a0<\/span>OG-3 Calibration Checker<\/a>\u00a0<\/span>if the calibration of the OG-3 is checked and adjusted for accuracy at the user’s altitude. The OG-3 is calibrated in Eco Sensors’ laboratory at 2,100 meters. At lower altitudes the OG-3 will generate ozone at a slightly higher concentration than the standard .1 ppm due to the higher molecular density of air at lower altitudes. This difference in OG-3 output is not significant for checking the calibration of the semiconductor sensor (HMOS) Eco Sensor instruments, but may warrant slight adjustment for checking the calibration of the higher precision UV-100.<\/p>\n

\"OG-3<\/a>
OG-3 Ozone Checker<\/figcaption><\/figure>\n

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First, the OG-3 and UV-100 should have their calibrations synchronized when both instruments arrive from the factory to a calibration site with approximately the same altitude as the end user of the UV-100. This calibration checking should be done in relatively gas free air in an air conditioned room with essentially no direct outside air present.<\/p>\n

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  1. Allow a one hour warm-up for both the OG-3 and the UV-100<\/li>\n
  2. Attach the short 10 mm (3\/8″) outside diameter tube to the UV-100 air filter input barb and fit its other end just inside the 10 mm hole on the bottom of the OG-3. Do not extend it far into the OG-3. A few mm is sufficient. Any further in will reduce the calibration accuracy.<\/li>\n
  3. After at least one minute, read the UV-100. It will typically be slightly different than .1 ppm – usually slightly higher. Align the tubing in the OG-3 hole in step (2) to maximize the UV-100 reading without pushing the tubing more than a few mm into the OG-3.<\/li>\n
  4. Record the UV-100 reading. For example, if it is .11 ppm, future calibration check readings can be adjusted downward by .01 ppm.<\/li>\n
  5. Alternately, the OG-3 calibration can be slightly adjusted for greater accuracy by:<\/li>\n<\/ol>\n
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