| abstract |
method for correlating a monitoring device to the life of a filter cartridge. the present invention relates to methods for correlating a monitoring device to the life of a filter cartridge which include providing a monitoring device, and calibrating the monitoring device to match the life of a filter cartridge. the monitoring device comprises a demand substance within a receptacle, a detection element with a detection point, a reader for the detection element, and a fluid release device. calibration includes determining the ratio of time. permanence of the monitoring device and the residence time of the filter cartridge, and the use of the reason to correlate the sensor response within the monitoring device to the life of the filter cartridge. the response of the sensor is correlated with the life of the filter cartridge by controlling the fluid release parameters of the fluid release device. fluid release parameters include flow, mass of demand substance, cross-sectional area of receptacle, volume of receptacle, and density of compression of demand substance. |