Replacing sensors in your gas monitor is a great way to increase the 
lifespan and ensure accurate readings over time. When one of your 
sensors dies and needs to be changed, review the sheet below to 
determine the correct sensor for your gas monitor. This list is not 
complete, but it covers some of the most common sensors for popular gas 
monitors. For more detailed information or to ask about a sensor 
replacement not covered below, give us a call and we would be glad to 
help you out. (866) 455-7832
| Monitors and Their Sensors | ||||||||||||
| Brand | Monitor | O2 Sensor | H2S Sensor | LEL Sensor | CO Sensor | PID Sensor (10.6 eV) | NH3 Sensor | PH3 Sensor | ClO2 Sensor | SO2 Sensor | Cl2 Sensor | O3 Sensor | 
| BW | MicroClip XT | SR-X10-C1 | SR-H-MC | SR-W-MP75C | SR-M-MC |  |  |  |  |  |  |  | 
| BW | MicroClip | SR-X-MC | SR-H-MC | SR-W-MP75C | SR-M-MC |  |  |  |  |  |  |  | 
| BW | Max XT II | SR-X10-C1 | SR-H-MC | SR-W-MP75C | SR-M-MC |  |  |  |  |  |  |  | 
| BW | Max XT | SR-X-MC | SR-H-MC | SR-W-MP75C | SR-M-MC |  |  |  |  |  |  |  | 
| BW | Quattro | SR-X10-C1 | SR-H04-SC | SR-W04-75C | SR-M04-SC |  |  |  |  |  |  |  | 
| BW | Max | SR-X10-C1 | D4-RHM04 | D4-RW90 | D4-RHM04 |  |  |  |  |  |  |  | 
| BW | Micro | SR-X10-C1 | D4-RHM04 | SR-W04 | D4-RHM04 |  |  |  |  |  |  |  | 
| BW | Micro 5 (PID) | SR-X10-C1 | PS-RH04S | SR-W04 | SR-M04-SC | SR-Q07 | SR-A04 | SR-P04 | SR-V04 | PS-RS04 | PS-RC10 | SR-G04 | 
| BW | Extreme | SR-X10-C1 | PS-RH04S |  | SR-M204 |  | SR-A04 | SR-P04 | SR-V04 | PS-RS04 | PS-RC10 | SR-G04 | 
| MSA | Altair 4x | 10106729 | 10106725 | 10106722 | 10106725 |  |  |  |  |  |  |  | 
| MSA | Altair 5x | 10106729 | 10106725 | 10106722 | 10106725 |  | 10106726 |  |  | 10106727 | 10106728 |  | 
| MSA | Sirius | 10049806 | 10049805 | 10049808 | 10049804 | 10049692 |  |  |  |  |  |  | 
| MSA | Solaris | 10046946 | 10046945 | 10046947 | 10046944 |  |  |  |  |  |  |  | 
| MSA | Altair 4 | 10046946 | 10089117 | 10089116 | 10089117 |  |  |  |  |  |  |  | 
| MSA | Orion | 10025940 | 711307 | 10024247 | 711306 |  |  |  |  |  |  |  | 
| MSA | Altair Pro (various single-gas versions) | 10046946 | 711307 |  | 711306 |  | 10080225 | 10080226 | 10080222 | 10080223 | 10080221 |  | 
| MSA | Altair 5 | 10046946 | 10089117 | 10089116 | 10089117 |  |  |  |  | 10080223 |  |  | 
| RKI | GX-2009 | OS-BM2 | ES-1827i | NC-6264A | ES-1821 |  |  |  |  |  |  |  | 
| RKI | G750 | 5701-016 | 5703-027 | 1750225 | 5704-027 |  |  |  |  | 1750218 |  |  | 
| GfG | G450 | 1450001 | 1450003 | 1450005 | 1450004 |  |  |  |  |  |  |  | 



















