Flow Tracker Series 1000/2000
Flow Tracker 1000/2000 User Information
13
Parameters
Linear velocity
The Agilent Flow Trackers use the volumetric
flow rate and the selected capillary diameter (inside diameter)
to calculate the average velocity of the selected gas through the
capillary. Linear velocity is measured in centimeters per second
(cm/sec).
Capillary diameter
The capillary diameter function scrolls
through the list of available capillary diameters in mm. The
capillary inside diameters are 0.10 mm, 0.18 mm, 0.25 mm,
0.32 mm, 0.53 mm, and 0.75 mm.
Reference flow
The reference flow function allows the user to
store a volumetric flow rate in memory and has default of zero.
Push the reference flow button to store the current volumetric
flow rate in memory. The fixed value will be displayed above the
label in milliliters per minute (mL/min).
Split ratio
The split ratio is the ratio of the present volumetric
flow rate to the stored reference flow rate. This parameter
reads:
•
“DIVO” (Division by Zero Error) until a value is stored in the
reference flow buffer (see Reference flow above), or
•
“OVRFLO” (overflow) if the resulting ratio is too large to
display. The maximum value that can display here is 655.35.
This can occur if the stored reference flow is very near zero
and/or the present flow is high.
N O T E
In gas chromatography, this is normally used to store the main column
flow rate prior to attaching the flowmeter to the split vent, so that a
running split ratio can be calculated and displayed.
N O T E
When the power is turned off, the stored reference flow returns to the
default zero.
