SKC Limited Haz-Dust IV - Manual (Page 65)

Checking the Flow Rate
Introduction It is good technique to check the flow rate every time 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:
• If sampling Thoracic or Inhalable particulates make sure the Thoracic
sampling inlet is attached to the sensor head.
• If sampling Respirable particulates make sure the Respirable sampling
inlet is attached to the sensor head.
Step Action
1 Attach your airflow calibrator to the Haz-Dust IV using the table
below.
If sampling... Then...
Thoracic or
Inhalable
Particulates
1. Attach one end of the calibration airflow
tubing to the Thoracic sampling inlet.
2. Connect the other end of the calibration
airflow tubing to your airflow calibrator.
Respirable
Particulates 1. Insert GS-Cyclone into cover of
calibration chamber. Screw cover on
tight.
2. Attach airflow calibrator to 90 ° nylon
fitting. Attach Haz-Dust IV sensor to
tygon tubing. See figure 5.2a. Consult
calibration chamber instructions, p/n
CH-103, for further detail.
Continued on next page
Figure 5-2a. Haz-Dust IV sensor connected to CH-103 calibration chamber.
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