12
Reference Manual
Flow Tracker Series 1000/2000
Operating the Flow Tracker
1
Press and hold the
ON
button for approximately a half
second. Two horizontal bars will appear momentarily before
the Flow mode screen appears on the display.
2
Press the
ZERO
button to tare the flowmeter and provide it
with a reference point for zero flow.
This is a very simple
but important step in obtaining accurate measurements.
It
is good practice to “zero” the flowmeter each time it is turned
on. If the flow reading varies significantly from zero after an
initial tare, give the unit a minute or so to warm up and
re-zero it.
3
Press
GAS
to scroll through the gas list. The default gas is air.
The selected gas is shown on the display under the
GAS
button. The selected gas is a global parameter that stays the
same regardless of operating mode. Use this button to select
the gas presently being measured. The viscosity of the
selected gas is used in the calculation of flow.
N O T E
Should the unit ever fail to come on as expected, push the OFF button and
then press and hold the ON button.
N O T E
If possible, it is helpful to zero the unit near the expected operating
pressure by positively blocking the flow downstream of the flowmeter
prior to pushing the ZERO button. Zeroing the unit while there is any flow
will directly affect the accuracy by providing a false zero point. If in doubt
about whether the flow is positively blocked, remove it from the line and
positively block both ports before pressing ZERO. If the unit reads a
significant negative value when removed from the line and blocked, it is a
good indication that it was given a false zero. It is better to zero the unit at
atmospheric pressure and a confirmed no flow condition than to give it a
false zero under line pressure.
N O T E
It is very important to select the gas being measured in order to get an
accurate flow rate measurement. Selectable gases are listed in
