REMAINING SERVICE LIFE INDICATION SYSTEM FOR GAS MASKS CARTRIDGES AND CANISTERS

摘要

Gas masks and canisters for gas masks have a chemical sorbent that protects the respiratory system of the wearer from gaseous compounds. The remaining service indication systems for respiratory protections systems provide a warning to the wearer that the capacity of the chemical sorbent to adsorb or absorb further compounds is nearly depleted. A remaining service life indication system has a computer memory device for storing information concerning the canister for determining an end of the service life of a gas mask, a canister and/or a cartridge and such devices from the input of various sensors.

主权项

1. A respiratory protection system, comprising:
a gas mask defining a inner volume, wherein the gas mask comprises remaining service life indicator system comprising: a central processing unit capable of calculating a remaining capacity of the chemical sorbent canister; a mount for interchangeably and selectively receiving one of a plurality of different chemical sorbent canisters, wherein the plurality of different chemical sorbent canisters comprise chemical sorbent canisters for removing different airborne targeted contaminants and a computer memory storage device capable of storing canister data information and communicating the canister information and communicating with the central processing unit, wherein the canister data comprises information identifying the airborne targeted contaminant; a mount for interchangeably and selectively receiving one of a plurality of different chemical concentration sensors, wherein the different chemical concentration sensors comprise sensors for the determining the airborne concentration of different airborne targeted contaminants and are matched to a specific chemical sorbent canister of the plurality of different chemical sorbent canisters and the chemical concentration sensor received in the mount is in communication with the central processing unit; an air flow sensor in communication with the central processing unit; a temperature sensor in communication with the central processing unit, wherein the canister data information comprises a temperature compensation factor for the chemical sorbent and the central processing unit calculates the remaining capacity of the chemical sorbent canister based upon the temperature compensation factor, an output from the air flow sensor and the chemical concentration sensor.