RPM4-AD™ OPERATION AND MAINTENANCE MANUAL
© 2005-2007 DH Instruments, a Fluke Company
Page 72
Table 14.
UNIT function - available units of measure
<4AIRSPEED>
<1SI>
1
<2OTHER>
<3ALTITUDE>
<1calibrated>
<2true>
<4USER>
<1Pa>
<2hPa>
<3kPa>
<4MPa>
<5mbar>
<6bar>
<7mmHg>
<8mmWa>
<1psi>
<2psf>
<3inHg>
<4inWa>
<5kcm2>
<6Torr>
<7mTor>
<1feet>
<2meters>
<1kts>
<2mph>
<3km/h>
<4mach>
<1KTS>
<2MPT>
<3KM/H>
<4MACH>
1. SI pressure units include certain units based on SI such as mmWa.
If
<3airspeed>
is selected, the type of airspeed unit must be selected. The display is:
Select
<1calibrated>
for airspeed calculated from
the differential pressure (Qc) assuming a fixed
altitude and air temperature (see Section 7.2 for
information on RPM4-AD unit conversions). This is
the most commonly used air speed unit. Select
<2true>
for airspeed calculated from differential
pressure (Qc) taking into consideration altitude (Ps)
and a user entered temperature value.
Airspeed type:
1calibrated 2true
If
<2true>
is selected, the default air temperature to be used in calculating airspeed must be
entered. The display is:
1. Entry field for default temperature to be used in true
airspeed calculation. The default value is 15 ºC.
True airspeed
default T: 15.0 ºC
Enter the default temperature value. This value can be edited when a true airspeed unit is
selected in the
[UNIT]
menu. Changing this value changes the default temperature value for
any true airspeed units that have already been setup.
In RPM4-AD displays, calibrated airspeed units are represented in lower case (e.g. kts)
and true airspeed units are represented in upper case (e.g. KTS).
If
<4user>
is selected, the user unit must be defined. The display is:
1. Entry
field.
Define user unit:
1.000000 unit/Pa
Enter the number of user units per Pascal (Pa) in the entry field. Pressing
[ENT]
defines the
user unit and returns to the
<Set up unit #n>
screen.
The user defined unit label can be customized to any alphanumeric, four character label
using the remote command “UDU” (see Section 4.4.4).
See
Section
7.2 for information on the unit of measure conversions used by RPM4-AD.
