Ashcroft ATE-100 Handheld LCD Digital Calibrator - Manual (Page 16)

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Revision 4.6 3/2004
the display returning to a readout mode featuring the
measurement data from both of the installed modules.
As seen below:
o F psi
+72.35 +123456
See 8.4 for display of pressure in two different engineer-
ing units.
See Section 7.0 for display of current and voltage mea-
surement data.
Section 6.0 Zero Function
This section applies to pressure measurement only. The
zero function does not apply to the function of tempera-
ture measurement. The tare capability will function in
conjunction with temperature measurement modules.
This allows for the subtracting of a displayed or operator
entered temperature value from the displayed tempera-
ture measurement data. See Section 9.0 for information
on the tare function.
Pressing the zero key when two Quick Select pressure mod-
ules are installed and displayed will simultaneously zero
both pressure modules. In addition, each module can be
zeroed independently, as outlined in the following section.
It is recommended that the instrument be zeroed prior to
use or calibration.
Section 6.1 Zeroing One of Two Installed Quick
Select Pressure Modules
If zeroing one of two installed modules is desired the
following process should be followed:
In this example we will assume that the left pressure
module is to be zeroed and the right pressure module is
to be unchanged.
Step 1 Press the port select the number of times
required (one or two) to deactivate the display of pres-
sure on the side that you wish not to re-zero.
PORT
SEL
When set up in accordance with the requirements of this
example the HHC will have the following
information on the display:
psi mA
+12345 +1234
Step 2 With the pressure display deactivated for the
side that is not to be zeroed press the zero key.
ZERO
The HHC will respond by displaying:
psi mA
+00000 +1234
Step 3 To resume the display of pressure measurement
data, for the pressure module not zeroed, press the port
select key the required number of times (one or two) to
restore the dual pressure display.
When complete the HHC will display:
psi psi
+00000 +12345
normal pressure measurement activity can now be
resumed.
Section 7.0 Displaying Current and Voltage
Measurements
As outlined in the previous section the port select (PRT
SEL) key is used to select the information seen on the
display.
The display configurations available are:
Left Side of Display Right Side of Display
pres/temp pres/temp
pres/temp electrical measurement
electrical measurement pres/temp
The pressure/temperature value on the display cor-
responds with the measured value of the Quick Select
module installed in the module bay on the corresponding
side of the calibrator.
To read a current or voltage follow the steps below.
Step 1 With the HHC on and reading pressure/
temperature set the display as outlined in Section 5.0 to
display the pressure measurement of the desired module.
Step 2 With the pressure measurement, for the desired
module, displayed on one side and the electronic
measurement on the other press the mA/V key until the
desired electrical measurement parameter appears. For
example, with a pressure module installed in the left
module bay, pressing the mA/V key will produce the
following results:
First display when electronic measurement is initiated
through the port select function:
psi mA
+123456 +1.234
Result from pressing mA/V key first time:
psi ------
+123456