Compressed air tester measures four parameters
AQT-4 air quality tester measures mass concentration of contaminants, pressure dew point, temperature, and pressure. Contamination is measured in levels from parts per billion to 100 parts per million. Pressure dew points are sensed from as high as 80 F to -49 F. Temperature is sensed from 22-175 F. Pressure is detected from 50-150 psig. Parker Hannifin Corp., Finite Filter Div.