K factor

https://www.instrumart.com/assets/Honeywell-SPMflex-manual.pdf

K-factor is a feature that allows gases’ cross-sensitivity to be employed to measure a target gas after calibrating the detector with a different gas. The advantage for the user is that a small number of calibration gases can be used to calibrate a detector for a wide range of target gases. The detector’s readings are modified by the known relationship between the two. For example, a 5 ppm concentration of Gas A is seen by the detector as the same as a 5.8 ppm concentration of Gas B. The K-factor is 1.2 (5.8 ÷ 5 = 1.16 = 1.2 when rounded to one decimal place). Therefore, the detector with a Gas A Chemcassette cartridge can be used to accurately detect Gas B by multiplying the Gas A reading by 1.2.

The feature can also be used to compensate for diluted samples. For example, when reading a gas that has been diluted 5:1, the K-factor feature will will enable the detector to yield a reading of the undiluted gas.

K-factor conversions are performed by the detector automatically. The K-factor is at Main menu > Set up > Monitoring > Gas.

If desired, an alternative name can be assigned to the K-factor target gas. This would be useful if, for example, a certain dilution of a gas was being detected. With K-factor enabled, navigate to Setup > Monitoring > Gas > K-factor > Alt. gas name > Edit. A name with up to eight characters can be entered from that screen. Save the name by pressing the Accept button.