Casella CEL Apex personal sampling pumps - Manual (Page 14)

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TEMP Current internal air temperature.
2.2.2 Manual Reset (Clear Current Sample)
To clear any accumulated sample duration and volume, the instrument must be in Hold Mode.
1. Press or sufficient times to make blink on the display.
2. Press and hold .
A CLR message and countdown will be displayed.
3.
Hold the key down until the countdown is complete and CLR
disappears.
On the standard unit, all accumulated values will be cleared.
On the Apex Pro, data from any current event is stored and the
sample (run) terminated ready for a new run to be started.
2.3 Perform Single Point Calibration (Set Flow)
Attach a sampling head and flow tube or other flow-measuring device to the pump’s inlet nozzle to measure
the actual flow as shown in Figures 6 - 8.
TEMP 19.48
2.5
02023
Clamp
Clamping Studs
Apex Pump
Rotameter Float
(Read flow rate
from the top of
the float)
Flowmeter Stand
Rotameter Tube
Sampling Head
Connecting Hose
(5 mm nominal
internal dia.)
TEMP 19.48
2.5
02040
Clamp
Clamping
studs
Stand
Sampling
head
Connecting tube
(5 mm nominal internal dia.)
Flow
Flow
Outlet
Digital Flow meter
Apex Pump
Dry Cal
®
Pr imary Flow Mete r
Figure 6: Calibration with rotameter
Compartment
Figure 7: Calibration with digital calibrator
Compartment