Starting a new String: Turn the Alpha Chrony OFF then ON, or: Press and release the FU button until -Hi- is displayed. Submicrometer particles are grown with alcohol or another liquid vapor as they pass through a heated saturator lined with alcohol-soaked felt. Just unfold, mount on a tripod or place on a table, insert Diffusers (if needed) and shoot in less than 2 minutes. The pumps can be hand-operated (weight: 8-11 ounces), or they can be an automatic type (weight: about 4 pounds [lbs]) that samples using a preset number of pump strokes. Some instruments deposit the particulate matter on a filter, while others capture it in a liquid solution. C. Generic Detection There are several techniques and instruments available that will allow responders to perform a generic detection for biological agents. The results of up to 50 measurements can be stored in a data recorder integrated in the analyzer.
Using diffusers on cloudy days is not necessary, since you have the clouds as a white background for contrast. HOW TO TURN OFF PHOTO SENSORS Turn Chrony off. Usually the gauges are available in pound (lb), kilogram (kg) or Newton units of measure. Calibration Most calibration is done annually by the manufacturer.
Relative humidity conditions above 80 percent may result in readings which are higher than the actual dust concentration. Detector tubes are most useful for screening purposes to determine whether levels of contaminant present in an area warrant further sampling. The measurement should be made as close as possible to the point where the vibration enters the hand. Consult the instrument equipment manual to determine what field calibration is needed. If the equipment fails field calibration, consult the CTC for guidance.