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Revision 4.6 3/2004
Step 1
With the HHC on and measuring pressure press
the engineering unit key. Designated ENG UNIT on the
keypad.
ENG
UNIT
The HHC will respond by displaying:
fi rst screen:
psi inHg inWC ftSW
Bar
mBar kPa mPa
second screen
mm Hgcm WCmm WCkgcm
user
Step 2
Using the left/right and up/down arrow keys
select the word “user”. When selected the word “user”
will fl ash.
mm Hgcm WCmm WCkgcm
user
Step 3
With the word “user” fl ashing press the enter
key.
ENT
The HHC will respond by displaying pressure measure-
ment data in the following display format:
u_mSW u_mSW
xxxxxx xxxxxx
where:
u_ indicates that the engineering unit in use is a user
defi ned unit with a label of mSW
xxxxxx represents the current pressure measurement(s)
in the user engineering unit.
See Section 8.4 Display of Two Engineering Units for
information on how to simultaneously display the mea-
sured values from two Quick Select pressure modules in
different engineering units.
Section 8.4
Display of Two Engineering Units
The HHC can display pressure measurement data from
two installed Quick Select pressure modules in indepen-
dent engineering units. To display two different engi-
neering units simultaneously the following procedure
should be followed.
Step 1
With the HHC on and displaying pressure mea-
surement data from two Quick Select pressure modules
press the engineering unit key, designated ENG UNIT
on the keypad.
ENG
UNIT
Step 2
Using the arrow keys select either of the two
desired engineering units. For this example we will
select psi as one of the desired units.
With psi selected the text “psi” will fl ash on the display
and the display will look as follows:
psi inHg inWC ftSW
Bar mBar kPa mPa
Step 3
Press the enter key to select psi.
ENT
The HHC will respond by returning to the pressure mea-
surement mode and will display the measurement data
for both Quick Select pressure modules in psi, as follows:
psi psi
+12345 +12345
Step 4
Next, press the port select to deactivate the dis-
play of pressure measurement data on the side that you
wish to maintain pressure measurement in terms of psi.
A pressure display is deactivated when the correspond-
ing side of the display contains milliamp (mA) data,
Voltage (V) data or is blank “ ------ ”.
See Section 5.0 for details on the port select function.
In this case we will assume that the right side will
remain in psi and our goal is to present the measurement
data from the left Quick Select pressure module in bar.
Pressing the port select one time will deactivate the left
pressure display converting it to a mA measurement
fi eld. Pressing the port select a second time will deacti-
vate the right side, converting it to a mA measurement
fi eld and returning the left side of the display to the
function of pressure measurement.
Since we want the right side to remain psi we will deac-
tivate it in the psi mode by pressing the port select key
once.
PORT
SEL
The HHC will respond with the following display:
psi mA
+12345 +1234
Step 5
With the right side deactivated from pressure
measurement activities press the engineering unit key,
designated ENG UNIT on the keypad.
ENG
UNIT
Содержание PTE-1
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