End-of-service indicator for a respirator cartridge

Details End-of-service indicator for a respirator cartridge End-of-service indicator for a respirator cartridge

A - Human Necessities

62

B

A62B 27/00 (2006.01) A62B 9/00 (2006.01) A62B 18/08 (2006.01) A62B 19/00 (2006.01) G01N 21/59 (2006.01)

Patent

CA 2219854

An end-of service indicator for use with a respirator cartridge, the end-of service indicator hvaing an optical fiber having two opposite extremities, one of the extremities being connected to a light source, the other of the extremities being connected to a detector which measures the intensity of light transmitted by the fiber. An alarm is connected to the detector and is triggered when the intensity of light measured by the detector is below a predetermined level. An important aspect of the end-of service indicator is that at least a portion of the optical fiber is porous. In use, the end-of service indicator is placed inside a respirator cartridge having a gas/vapor sorbent, so that when the respirator cartridge is used in a toxic environment, the gas/vapor sorbent gradually becomes saturated, thereby lowering the transmission properties of the optical fiber.

Affiliated with

Also associated with

Rating

End-of-service indicator for a respirator cartridge does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with End-of-service indicator for a respirator cartridge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and End-of-service indicator for a respirator cartridge will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1813516