skcinc.com
Form 37171 Rev 200630
Page 23
Calibrate Flow Rate with Single Tube
— Constant Pressure Mode
1. In Set Pressure screen:
Using left/right and up/down arrow buttons, adjust inlet pressure and flow
to achieve required flow. Increasing pressure will increase the flow and
vice versa. If required flow cannot be achieved while inlet pressure is
changed from 1 to 20 inches H
2
O, use a single low flow tube holder and
follow instructions below for calibrating flow rate with single or multiple
low flow tube holder in Constant Pressure mode.
Touch check mark to accept selection and return to Constant Pressure
screen with the new pressure setting displayed.
2. Disconnect representative sorbent tube from the calibrator. Replace representative sorbent tube
with newly opened unexposed method-specified sorbent tube to complete the sampling train.
Proceed to
Sampling
.
Calibrate Flow Rate with Single or Multiple Low Flow Tube Holder
— Constant Pressure Mode
If pressure needed to achieve required flow rates is unknown, set pressure to 20 inches H
2
O and start
pump. Follow instructions in
Calibrate Pump Flow Rate with the Dual, Tri, or Quad Adjustable Low Flow
Tube Holder
—
Constant Flow
Mode
.