"Optics obstructed," Elias read aloud. He looked at the unit. The internal infrared sensor was blocked. It wasn't a software glitch; the machine was blind. It couldn't see the gas because it couldn't see anything at all.
: The safety manual mandates maintenance intervals not exceeding one year . drager pulsar 7000 manual
The manual details how to toggle between these using the optional remote magnetic wand—no need to open the housing in hazardous areas. "Optics obstructed," Elias read aloud
: Functions in temperatures from -40°C to +60°C and pressures of 800 to 1,100 hPa. drager pulsar 7000 manual
The official Dräger Pulsar 7000 manual serves three primary purposes: