TSI Incorporated VelociCalc 8345, Operation And Service Manual

Page: 17 / 38

Operation
11
Flow Rate Function
The V
ELOCI
C
ALC
’s flow rate function can calculate
flow rate using a known area. The V
ELOCI
C
ALC
displays the volumetric flow rate in ft
3
/min, m
3
/hr,
or l/s, depending on the DIP switch setting (refer to
Appendix B). The flow rate can be calculated for a
round, square or rectangular duct. The shape and
size of the duct or other area through which the
flow will be measured must be entered.
Entering Shape and Size
Press the FLOWRATE key to put the
V
ELOCI
C
ALC
in flow rate mode. The
V
ELOCI
C
ALC
will prompt the user to enter the
shape and size, if this has not been done since
the instrument was turned on. The
V
ELOCI
C
ALC
will request entry of the shape by
alternately displaying the rectangle and the
circle. If shape and size have been entered, the
V
ELOCI
C
ALC
will go directly to displaying
flow rate.
Press the up and down arrow keys (
ÏÐ ) to
select the shape of the area, rectangular
(square) or circular, to measure. Each time an
up or down arrow key (
ÏÐ
) is pressed, the
display will toggle between the circle and
rectangle. When the desired shape appears on
the display press either the
ENTER or