MSA SIRIUS Instruction Manual page 59

Table 16. Known Interference Data for listed VOCs
CHEMICAL
ethylene oxide
arsine
phosphine
propylene
ethylene
methanol
* Methanol can give a delayed, high response on the CO channel. When cleaning the
bulb, it is important to ensure that all of the methanol cleaning compound has evapo-
rated from the bulb before re-installation into the instrument.
CONCENTRATION
2297 ppm
186 ppm
303 ppm
151.6 ppm
101 ppm
994 ppm
Performance Specifications
SENSOR CHANNEL
LEL O H
2 2
176 (5)
172 (5)
S CO
43 (5)
19 (5)
76 (5)
*
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