MSA Chemgard - Section 1 General Information; Sensor Selectivity

Chemgard Infrared Gas Monitor
Table of Contents
TOC - 1
Table of Contents
Section 1
General Information .................................................................... 1-1
Introduction ................................................................................................................................................ 1-1
Table 1-1. Chemgard System General Operating Specifications ..................................................... 1-1
Identifying Your Unit ................................................................................................................................... 1-2
Multipoint Sequencer ........................................................................................................................... 1-2
Beacon ................................................................................................................................................ 1-2
Figure 1-1. Identifying Your Unit .................................................................................................... 1-2
Figure 1-2. Single Point Sequencer Unit ....................................................................................... 1-3
Figure 1-3. Four Point Sequencer Unit .......................................................................................... 1-3
Figure 1-4. Eight Point Sequencer Unit ......................................................................................... 1-3
General Description .................................................................................................................................... 1-4
The Chemgard Unit: ............................................................................................................................ 1-4
The Internal Multipoint Sequencer Unit: ............................................................................................... 1-4
F
igur
e 1-5. Chemgard Gas Monitor with Optional Beacon ............................................................ 1-4
Terminology ............................................................................................................................................... 1-5
Applications ................................................................................................................................................ 1-5
Sensor Selectivity* ..................................................................................................................................... 1-5
Table 1-2. Cross-Sensitivity Data for Carbon Monoxide ................................................................... 1-6
Table 1-3. Cross-Sensitivity Data for Ethylene Oxide ....................................................................... 1-6
Table 1-4. Cross-Sensitivity Data for Ethyl Alcohol ...........................................................................1-6
Table 1-5. Cross-Sensitivity Data for Hexane ................................................................................... 1-6
Table 1-6. Cross-Sensitivity Data for Cyclo-Pentane ........................................................................ 1-6
Table 1-7. Cross-Sensitivity Data for Toluene ................................
................................................... 1-7
Table 1-8. Cross-Sensitivity Data for Methyle
ne Chloride ................................................................. 1-7
Table 1-9. Cross-Sensitivity Data for Trichloroethylene .................................................................... 1-7
Table 1-10. Cross-Sensitivity Data for Xylenes ................................................................................. 1-7
Table 1-11. Cross-Sensitivity Data for Methanol ............................................................................... 1-7
Table 1-12. Cross-Sensitivity Data for Ethane .................................................................................. 1-8
Table 1-13. Cross-Sensitivity Data for Nitrous Oxide ........................................................................ 1-8
Table 1-14. Cross-Sensitivity Data for Acetone. ............................................................................... 1-8
Table 1-15. Cross-Sensitivity Data for Perchloroethyle
ne ................................................................. 1-8
Table 1-16. Cross-Sensitivity Data for Perfluoromethylvinyl Ether .................................................... 1-8
Table 1-17. Cross-Sensitivity Data for Propylene Oxide ................................................................... 1-8
Table 1-18. Cross-Sensitivity Data for N-Pentane. ........................................................................... 1-9
Table 1-19. Cross-Sensitivity Data for Ethyl Ether ............................................................................ 1-9
Table 1-20. Cross-Sensitivity Data for Dimethylamine ...................................................................... 1-9
Table 1-21. Cross-Sensitivity Data for Nitrogen Trifluoride ............................................................... 1-9
Table 1-22. Cross-Sensitivity Data for C4F6 ..................................................................................... 1-9