Calib rtmodule dp meas, Dp meas mode: none l-r l+r – Ashcroft ATE-100 Handheld LCD Digital Calibrator User Manual

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Revision 4.6 3/2004

Step 2

With the modules installed, turn the calibrator

on by pressing the on/off key.

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

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 flash on the dis-
play.

Calib Rtmodule

dp Meas

Step 6

With the text “dp Meas” flashing press the enter

key.

ENT

The calibrator will respond with the following display.

dp Meas Mode:

NONE L-R L+R

Step 7

To perform dual module differential pressure

measurement select “L-R”; to exit this dp set up and
return to basic pressure measurement select “nOnE”.
To proceed, 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” flashing 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

for a calibrator displaying measurement values in the psi
engineering unit.

When the dual sensor differential firmware is active the
following measurement sequence will result from press-
ing the PORT SELECT (PORT SEL) key.

First press of the port select key:

L-R PSI PSI

xxxx

Second press of the port select key:

PSI L-R PSI

xxxx

Third press of the port select key:

PSI mA

xxxx

Fourth press of the port select key:

PSI

xxxx

Fifth press of the port select key:

PSI PSI

xxxx

The sixth press of the port select key will return to the
first dp screen as shown below and allow repeating the
choice of available port select configurations:

L-R PSI PSI

xxxx

****IMPORTAnT****

When static pressure is being applied to both modules
at zero differential pressure press the TARE Key to
eliminate any offset caused by the elevated static to
optimize measurement accuracy. 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
designation on the other side of the display the value
under the L-R designation is the resulting valuefrom the
subtraction of the right Quick Select measurement from
that of the left Quick Select measurement. The value
on the opposite side of the display, under the engineer-
ing unit without the L-R prefix represents the pressure
measurement from the Quick Select pressure module
installed in the corre-sponding side of the calibrator. By
using the port select function it is possible to read the
differential pressure measurement value as well as either
of the inputs independently.

2 –

Due to the length of the engineering unit designation

when the d/p is expressed in a user engineering unit the
L-R indication will be not be present on the display. The
display is limited to 16 characters/line and cannot display
both the L-R and a _XXXXXX engineering unit label.