Ashcroft ATE-100 Handheld LCD Digital Calibrator - Manual (Page 15)

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Revision 4.6 3/2004
Designation Function
DATA STORE
Provides ability to store measured
pressure or temperature values. (See
Section 22.0 for details.)
HOLD
Freezes the displayed pressure and
electrical measurements. (See Section
10.0 for details.)
^ Moves cursor up.
*TRIP
Provides access to pressure
DETECT
switch testing firmware. (See Section
18.0 for details.)
<
Moves cursor to the left.
*DAMP
Activates or disables dampused to
smooth displayed pressure measure-
ment data from the effects of low
level pressure transients. (See Section
12.0 for details.)
>
Moves cursor to the right.
CE
Clears previous entry.
mA/V
Changes electronic measurement
display from mA to V or V to mA and
can also be used to deactivate either
side of the display. (See Section 7.0
for details.)
v
Moves cursor down.
*%
Converts display from pressure units to
% of f.s. (See Section 13.0 for details.)
ENT
Enters input data.
Notes on key functions:
* These functions require data input through activation
of appropriate input fields in the setup menu. Examples
of required input data include:
For Damping: Level of damping desired.
For Engineering Unit Selection: Water reference tem-
perature or user (non library) engineering unit entry can
be selected.
For Leak: Type of measurement (leak rate vs pressure
decay), time to monitor and for leak rate applications the
volume of the vessel to be monitored.
For % Readout: Input zero and span, output zero and
span and device type (I/P, P/I, P/P, P/E).
The required data is input through the set up functions
provided by the corresponding menu options accessed
and available by pressing the setup key.
Complete details of each of the above outlined capabili-
ties is included in the section referenced after the func-
tion summary provided above.
Section 5.0 Port Select Function
The Port Select Key, designated PORT SEL, provides
the ability to select either of the two installed Quick
Select modules for display, both modules for display or
either a pressure/temperature module on one side and a
current or voltage measurement on the other side of the
display. For example, if the HHC has two pressure mod-
ules installed and is reading in psi the standard display
for dual pressure readout would be:
psi psi
+123456 +123456
Pressing the Port Select key once will result in the fol-
lowing display change:
psi mA
+123456 +1.234
Pressing the Port Select key a second time will result in
the following display change:
mA psi
+1.234 +123456
Pressing the Port Select key a third time will result in the
display returning to a dual pressure readout mode. As
seen below:
psi psi
+123456 +123456
If the HHC has a temperature measurement interface
module installed the same type of sequence would be
followed. For example, if the HHC had an RTD interface
module installed in the left module bay the following
sequence would be observed as a result of pressing the
PORT SEL key:
o F psi
+72.35 +123456
Pressing the Port Select key once will result in the fol-
lowing display change:
o F mA
+72.35 +1.234
Pressing the Port Select key a second time will result in
the following display change:
mA psi
+1.234 +123456
Pressing the Port Select key a third time will result in