Casella CEL Sampling heads for personal dust sampling - Manual (Page 19)

6.2.3 Calibration at Low Flow Using a Low Flow Flowmeter
Figure 17 illustrates an arrangement suitable for calibrating tubes in their
holders using a Low Flow flowmeter.
6.2.4 Calibration at Low Flow Using a BIOS Dry Cal
Flowmeter
Figure 18 shows an arrangement suitable for calibrating tubes using a Dry Cal
flowmeter.
Calibration
02060
Flow
Apex
Pump
Constant Pressure Controller
Low Flow Adaptor
Dry Flow Flowmeter
Sorbent Tube
in Tube Holder
PROG.
SET FLO
oC
L/min
RESET
CAL I.R.
TEMP 19.48
2.5
Flow
Figure 17: Measurement arrangement using a Low Flow flowmeter
Flow
Apex
Pump
PROG.
SET FLO
oC
L/min
RESET
CAL I.R.
TEMP 19.48
2.5
Outlet
Dry Cal Flowmeter
Dry Cal ®
Primary Flow Meter
02061
Constant Pressure Controller
Low Flow Adaptor
Sorbent Tube
in Tube Holder
Flow
Figure 18: Measurement arrangement using a Low Flow flowmeter
Page 19 of 24
SAMPLING HEADS AND ACCESSORIES
Users Guide