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Revision 4.6 3/2004
Section 21.3
Setting Up Dual Module Summation
Pressure Measurement
Step 1
With the calibrator off, install the two Quick
Select pressure modules in the calibrator. As this is a
summation process the modules may be in either
sensor bay.
Step 2
With the modules installed, turn the calibrator
on by pressing the on/off key.
ON
OFF
Step 3
With the calibrator on and displaying pressure
measurement data from the two installed Quick Select
modules press the Set Up key.
SET
UP
Step 4
Using the up/down and left/right arrow keys
locate the section of the set up menu that includes dp
measurement set up. This menu will appear on the cali-
brator screen as follows:
Calib Rtmodule
dp Meas
Step 5
Use the arrow keys to highlight the text “dp
Meas”. When highlighted the text will fl ash on the dis-
play.
Calib Rtmodule
dp Meas
Step 6
With the text “dp Meas” fl ashing press the enter
key.
ENT
The calibrator will respond with the following:
dp Meas Mode:
NONE L-R L+R
Step 7
To perform pressure measurement using the
dual sensor summation mode select “L+R”; to exit this
dp set up and return to basic pressure measurement
select “NONE”. To proceed, with use the arrow keys to
select the text “L+R”
dp Meas Mode:
NONE
L-R
L+R
Step 8
With the text “L+R” fl ashing press the enter key.
ENT
After pressing the enter key the calibrator will return to
basic pressure measurement.
Step 9
To activate the dual sensor dp mode of opera-
tion press the port select key one time after the set up
has been complete. The calibrator will display the fol-
lowing text
L+R PSI PSI
xxxx
xxxx
for a calibrator displaying measurement values in the psi
engineering unit.
When the dual module summation fi rmware is active the
following measurement sequence will result from press-
ing the PORT SELECT key
First press of the port select key:
L+R PSI PSI
xxxx
xxxx
Second press of the port select key:
PSI L+R PSI
xxxx
xxxx
Third press of the port select key:
PSI mA
xxxx
xxxx
Fourth press of the port select key:
mA
PSI
xxxx xxxx
Fifth press of the port select key:
PSI PSI
xxxx
xxxx
The Sixth press of the port select key will return to the
fi rst dp screen as shown below and allow repeating the
choice of available port select confi gurations
L+R PSI PSI
xxxx
xxxx
Notes on interpreting the displayed measurement values:
1 –
On a display set up with an L+R indication on one
side of the display and a straight engineering unit des-
ignation on the other side of the display the value under
the L+R designation is the resulting measurement for
the summation product of the left Quick Select measure-
ment added to the measurement value of the right Quick
Select module. The value on the opposite side of the dis-
play, under the engineering unit without the L+R prefi x,
represents the pressure measurement from the Quick
Select pressure module installed in the corresponding
side of the calibrator. By using the port select function it
is possible to read the summation pressure measurement
value as well as either of the inputs independently.
2 –
Due to the length of the engineering unit designa-
tion when the d/p is expressed in a user engineering unit
Summary of Contents for PTE-1
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