76
To cross calibrate the Sensepoint XCD flammable gas detector:
Obtain the star rating for both the calibration test gas and the gas to be detected from Table 10
These values may then be used in Table 11 to obtain the required calibration span setting when a 50 %
LEL test gas is applied to the detector.
Table 11 Calibration span setting
Note: These settings must only be used with a calibration gas concentration of 50 % LEL.
If a sensor is to be used to detect a gas other than that for which it was calibrated and there is no
intention to use an equivalent calibration gas to re-calibrate the sensor, then the required correction
factor may be obtained from Table 12
The reading shown on the gas detector controller or transmitter display should be multiplied by this
number in order to obtain a more accurate gas concentration result.
Table 12 Correction factors
Note:
Since catalytic sensors require oxygen for correct operation, a mixture of gas in air should always be
used for calibration purposes.
Assuming average performance of the sensor, the sensitivity information in Tables 10 to 12 is
normally accurate to + or - 30 %.
To Next Page
Loading...
