Form 40017 Rev 1906
Page 16 of 26
2. Set pressure to value obtained in Step 1.g as follows:
From Sample Menu:
Touch Advanced
> Touch
pressure display
a. Touch
left/right arrow bu
tt
ons
to set gross pressure se
tt
ing. Touch
up/down arrow bu
tt
ons
to
fi
ne-tune se
tt
ing.
Note:
A sustained touch on the up/down arrow bu
tt
ons will speed increment/ decrement
pressure se
tt
ing.
Note:
Set pressure value will blink and inlet LED will blink yellow-orange. When set
pressure is achieved, the pressure value will stop blinking and the inlet LED will turn
green. This may take up to 90 seconds.
b. Touch check mark to accept selection and return to Advanced Menu with new pressure
se
tt
ing displayed.
3.
Use a length of
fl
exible tubing to connect the exposed open end of the
fi
rst port sorbent tube
to a calibrator outlet
(Figure 5)
.
4. Touch Run bu
tt
on
on the pump touch screen.
5. Use a small
fl
at-head screwdriver to turn
fl
ow adjust screw on port
(clockwise to decrease,
counterclockwise to increase)
until calibrator displays the method-speci
fi
ed
fl
ow rate.
Note:
The
fl
ow rate displayed on the calibrator is the
fl
ow rate through the sorbent tube.
6. Repeat Steps 3 through 5 for all remaining open sorbent tubes.
7. Disconnect representative sorbent tube from the calibrator. Replace representative sorbent
tubes with newly opened unexposed method-specified sorbent tubes to complete the
sampling train.
Important!
Ensure all unused ports remain plugged with unopened sorbent tubes to keep ports clean during sampling.
See To sample on page 18.
Note:
If the pump is run in constant pressure mode (Sample > Advanced > Pressure se
tt
ing) without media connected or with media connected
that has a pressure drop below the set pressure value, the pump will “rev “ in an a
tt
empt to achieve the desired pressure se
tt
ing. If it cannot,
it will fault.
Pump inlet
224 Series Multiple-tube Low Flow Holder
Sorbent tubes
Tubing
Calibrator outlet
Figure 5.
Multiple-tube Calibration - Constant Pressure -
Train Overview
ent tubes Tubing Calibrator outlet
