Wearable mask fit monitor

A wearable respirator fit test monitor comprising:

• a particle counter device adapted to measure particle concentration in an aerosol sample, the particle counter device having an inlet for receiving an aerosol sample, wherein the particle counter device is one of an optical sensor, a condensation particle counter (CDC) device and a particle mass sensing detector;
• a controller unit adapted to receive a first and second input signals corresponding to particle concentrations in each of a first and second aerosol samples received from each of the particle counters, wherein the controller unit generates a particle concentration parameter corresponding to a ratio of the first and second input signals received from the particle counter;
• a switching valve device coupled to the particle counter and adapted to facilitate sampling a first aerosol sample and a second aerosol sample using the particle counter, wherein the controller unit actuates the switching valve to generate the first and second input signals from the particle counter;
• and
• a power source for powering the controller unit and the particle counter.

A method of fit testing a wearable respirator monitor comprising the steps of:

• measuring particle concentration in an aerosol sample using a first and a second particle counter device, the first particle counter having an inlet for receiving a first aerosol sample and the second particle counter having an inlet for receiving a second aerosol sample, wherein the particle counter device is one of an optical sensor, a condensation particle counter (CDC) device and a particle mass sensing detector;
• receiving at a controller unit a first and second input signals corresponding to particle concentrations in each of the first and second aerosol samples received from each of the first and second particle counters, wherein the controller unit generates a particle concentration parameter corresponding to a ratio of the first and second input signals received from the first and second particle counters;
• and
• powering the controller unit and the particle counters.

A method of fit testing a wearable respirator monitor comprising the steps of:

• measuring particle concentration in an aerosol sample using a particle counter device, the particle counter device having an inlet for receiving an aerosol sample, wherein the particle counter device is one of an optical sensor, a condensation particle counter (CDC) device and a particle mass sensing detector;
• receiving at a controller unit a first and second input signals corresponding to particle concentrations in each of a first and second aerosol samples received from each of the particle counters, wherein the controller unit generates a particle concentration parameter corresponding to a ratio of the first and second input signals received from the particle counter;
• providing a switching valve device coupled to the particle counter and adapted to facilitate sampling a first aerosol sample and a second aerosol sample using the particle counter, wherein the controller unit actuates the switching valve to generate the first and second input signals from the particle counter;
• and
• powering the controller unit and the particle counter.