Warning - MSA Sirius Mode D'emploi

For example:
A monitor is calibrated on isobutylene, and has isobutylene defined as
the sample gas. When sampling 106 ppm of benzene in air, the
instrument reports a concentration of 200 ppm. In this example, the
response factor for benzene relative to isobutylene would be:
RF benz = 106 ppm known conc. benzene
When surveying, if benzene is selected as the sample gas in the
Response Factor page, and 0.53 is entered into the monitor as the
response factor, the instrument would use this response factor to
automatically correct the displayed concentration into PPM benzene.
If a chemical has a response factor between zero and one, the monitor
has a higher detector response for this chemical than isobutylene. If the
response factor is greater than one, the monitor has a lower detector
response for this chemical than isobutylene.
It is very important to select the correct bulb setting during
PID setup since PID response factors for a target chemical
relative to Isobutylene are different depending on what ener-
gy PID bulb is installed. See Chapter 3, "Using the Sirius
Multigas Detector" for setup instructions. Failure to follow
this warning can result in inaccurate readings that could
lead to serious injury or death.
2-4
200 ppm reported

" WARNING

"
= 0.53