Abstract: The colliding-jet nozzle which includes a nozzle body portion having a proximal end, a distal end and a fluid inlet defined partially therethrough. The body portion also includes first and second outlet ports disposed through the nozzle body portion for directing fluid from the inlet outwardly therefrom. A proximal end of a first hollow tube is attached and in fluid communication with the first outlet port and a distal end of the first hollow tube extends outwardly therefrom. A first end of a second hollow tube is attached and in fluid communication with the second outlet port and a second end of the second hollow tube is axially aligned with the distal end of the first hollow tube to define a gap therebetween such that fluid exiting from the first outlet port and fluid exiting from the second outlet port directly collide with each other to atomize fluid.

Abstract: A gas detector is disclosed which includes a CO sensor and a processor. The CO sensor senses an environmental CO concentration and provides a variable electrical output in response. The processor receives digitized samples of the sensor's electrical output and computes, with each measurement sample, a COHb level of a hypothetical person exposed to the CO concentration sensed. The computation involves determining an equilibrium COHb level for each measurement sample, which is compared with a previously computed COHb level associated with previously measured samples. The previously computed COHb level is updated based on the comparison. When the computed COHb level is above a predetermined danger threshold, the processor preferably causes an audible and visual alarm to be activated to alert any persons present. The gas detector can further include a CH.sub.4 sensor coupled to the processor for independently sensing CH.sub.4 levels such that an alarm is activated when the CH.sub.