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An operator can check the status of the battery charge by pushing a button that displays a fuel gauge. The EVA sounds an alarm when the battery power is low and rings a second alarm when airflow is low. The alarm sounds travel through the breathing tube to the wearer’s ear. In addition, the EVA unit’s filter-locking tab notifies the user that the filter is in place with a visual indication and an audible click. The PAPR is appropriate for applications that pose particulate hazards.
If a sample falls outside the instrument’s calibration range, an Intellidilution feature automatically dilutes the sample according to an algorithm to bring it within the calibration range. In addition, the machine automatically takes aliquots or dilutes from stock standards to generate calibration ranges. This feature reduces labor and removes the opportunity for human error.
The instrument’s software maintains sample logs and includes a leak-checking process. Operators can use the software to change flow and set the required pressures, thus improving test results’ reproducibility.