FKS 1DP- PBM-E User Manual - Copyright © 2018 FlowKinetics
LLC, All Rights Reserved
13
Hold/Zero button to set the desired value; similarly for the third digit. The
instrument will then return to measurement mode. Any calculated speeds will then
use the K factor you set. The K factor is stored in memory and will be retained
after switching the unit off. The measured speed multiplies K, see Appendix A.
See the Pitot probes instructions for the value of K (usually = 1 for most Pitot
probes).
Q: How Do I Measure Standard Speed?
Standard speed corresponds to a density based on a pressure, Patm, of
101.325kPa (29.92 inHg @ 32ºF) and a temperature, T, of 21.1ºC (70ºF). The
FKS 1DP-PBM-E allows you to manually set Patm and T. These values can be set
in two ways:
1.
Set the Range selector to Menu. The menu will cycle through
various functions. When
Set Patm & Temp
appears,
rotate (any direction) the Range control to select it. The menu will
prompt,
Set Units Rotate
followed by
kPa
alternating with
inHg @ 32F
. When the desired unit appears,
rotate the Range selector (any direction or unit) to set in either
metric or imperial units. Depending on your selection, the screen will
display
000.00
(metric) or
00.00
(imperial). The first digit will
begin to blink. To increment this digit press the Hold/Zero button.
You can also keep the button pressed to advance rapidly. If the
displayed digit increments beyond 9, it will wrap around and
continue from 0. When the desired value for this digit is set, rotate
the Range selector (any direction or unit). The second digit will begin
to blink. Use the Hold/Zero button to set the desired value; similarly
for the third digit, etc. After setting the atmospheric or absolute
pressure, the unit will prompt for the Temperature to be set. After
setting, the instrument will then return to measurement mode. Any
calculated speeds will then use the values you set for Patm and T.
Patm and T are stored in memory and will be retained after
switching the unit off.
2.
Set the Range selector to Menu. The menu will cycle through
various functions. When
Reset K, Patm, T
appears,
rotate (any direction) the Range control to select it. The menu will
indicate that K, Patm and T have been reset to default (i.e. standard
conditions). Note that K is also reset to 1 (default).
Q: How Do I Measure Actual Speed?
