Model 633 Aethalometer® Black Carbon Monitor User Manual | Teledyne Advanced Pollution Instrumentation |
Automatic flow calibration procedure:
7.Connect the flow meter to the inlet of the Aethalometer, note the orientation! Connect the data cable to the serial connector on the back of the Aethalometer, then press OK.
8.Once you’ve pressed OK to start the flow calibration, wait for it to finish, and press OK when prompted.
The display continues with prompts for completing the procedure, i.e., wait for chamber to lift, remove flow pad, return tape, wait for chamber to return to home position, etc., until the entire procedure is complete.
After completion of automatic (or manual) flow calibration and the instrument is returned to operation mode, note that the intake flow reported from a flow meter does not match the reported flow on the front panel of the 633. This is normal due to leakage around the filter tape as discussed in Section 5.2. The difference in flow may be from 4 – 7% and the 633 compensates for this difference during the BC calculation.
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