Recommended to keep the sample lines as short as possible where the RH condition at the sample point is high (above %50 RH); there will be some sample loss due to absorption onto the
sample line.
2
An ozone generator can be used instead of 1 ppm NO2.
Bump Testing Notes:
As an alternative, the actual target gas can always be used instead of a cross-sensitive gas.
Higher concentrations than the recommended ones can be used if necessary, but extra time may be needed for the reading to recover to zero.
IMPORTANT: this should only be done once to avoid the danger of poisoning the sensor.