Teledyne Advanced Pollution Instrumentation | Model 633 Aethalometer® Black Carbon Monitor User Manual |
inverted so rain cannot enter. A funnel on the sampling end of the inverted sample line tubing with the opening covered by a mesh screen is recommended. Alternatively, the optional insect screen can be installed near the sampling end of the tubing. The inlet should be unobstructed, securely fixed and placed at an appropriate distance from the roof or walls of the station. Please consult the appropriate national and international technical standards for particulate matter sampling and analysis for details.
3.3 Powering on the Aethalometer
Connect instrument to AC power and turn on. The instrument has two power‐on switches – one on the rear panel (Figure 8, top) and another on the front inside the door on the right (Figure 8, bottom). Set both switches to the ON position.
Figure 8. Power on switches: rear panel (top photo) and front inside the door on the right (bottom photo).
Upon start‐up, the instrument will proceed through an initialization period which can take up to 5 minutes (Figure 9). Various subunits are tested during this period and test results are
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