How do you calibrate the oxygen index tester?

 

Obtain standard samples with known oxygen indexes that cover the different oxygen index values in the measurement range. Standard samples are usually supplied by an accredited organization or manufacturer. 2.

 

Ensure that the test instrument is clean and free of contaminants such as dust, dirt or residues from previous tests. Check the integrity of the various components of the instrument and ensure that they are connected and calibrated as required for proper use of the instrument.

Perform the calibration procedure in accordance with the instrument's instruction manual or manufacturer's guidelines. Typically, this includes calibrating the instrument's flow meter and oxygen measurement electrode. The flow meter calibration ensures that the required ratio of oxygen to nitrogen meets standard requirements, while the oxygen electrode calibration ensures that the oxygen concentration is accurately measured.

 

A standard sample is placed in the test instrument and tested according to the standard requirements. By measuring the flow rates of oxygen and nitrogen and the oxygen index of the standard sample, it is compared to the known oxygen index of the standard sample. This verifies the accuracy and precision of the test instrument.

 

If the measured oxygen index deviates from the standard value, an adjustment is required. Make adjustments accordingly to the instrument's calibration methods and guidelines to ensure the accuracy and precision of the instrument. After making adjustments, rerun the calibration test to confirm that the problem has been corrected.

 

Record all calibration procedures, adjustments, and results of calibration tests. These records may be used for reference and quality assurance purposes.

 

To maintain consistent accuracy, the oxygen index tester should be maintained and recalibrated periodically. Follow the manufacturer's recommendations for maintenance schedules and recalibration intervals.

 

Note that the above steps provide a general overview of calibrating the oxygen index tester. Specific steps may vary depending on the instrument model and manufacturer, as well as applicable industry standards and regulations. Reference to the instrument's user manual, manufacturer's guidelines, and relevant standards is important for proper calibration.