SKC Limited EPAM-7500 - Manual (Page 47)

5-4
Checking the Flow Rate
Introduction It is good technique to check the flow rate every time before and after a new
gravimetric filter is used for sampling.
Checking the
flow rate Use the steps in the table below to check the flow rate.
Notes:
•
When using an impactor, be sure the proper sampling inlet is attached to
the sensor head.
Step Action
1 Attach your airflow calibrator to the EPAM-7500 using the table
below.
If sampling... Then...
PM-10, PM-
4.0, PM-2.5,
PM-1.0 or
TSP 1. Attach one end of the calibration airflow
tubing to flow adapter.
2. Connect the other end of the calibration airflow
tubing to your airflow calibrator.
2 Activate the internal sampling pump using the steps below.
Step Action
1 Select Monitor from the Main Menu.
3 Observe the flow rate on your air flow calibrator.
If... Then...
The flow rate
is 2.0 LPM. The flow rate is properly calibrated. Detach the
airflow calibrator tubing and continue with the
“Selecting the Particle Size” process.
The flow rate
is not 2.0
LPM. The flow rate must be adjusted. See page 5-7 for
instructions.
No flow is
present. See Troubleshooting section on Chapter 6.