Model 633 Aethalometer® Black Carbon Monitor User Manual | Teledyne Advanced Pollution Instrumentation |
7. Remove allen cap screws from cyclone top.
8.Clean all parts and thoroughly dry; then reassemble in reverse order.
5.2 Leak test
Always conduct a leak test prior to running a flow meter calibration, whether automatic (section 5.2) or manual (section 5.3).
Leakage (ζ) is measured during instrument operation. It is calculated from the flow in (Fin) and flow out (Fout).
ζ=1‐(Fin/Fout)
Average leakage is 7% at 5 LPM. It can differ slightly from spot to spot and during the spot loading.
Flow measurement using a mass‐flow meter (for example TSI4100)
1.Connect the flow meter to the input of the instrument.
2.Wait for a few seconds for the flow to stabilize and read the flow Fin.
50 | 07645A DCN6170 |
