Ashcroft ATE-100 Handheld LCD Digital Calibrator - Manual (Page 64)

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Revision 4.6 3/2004
To apply the 0.1 Vdc signal use the same procedure as
outlined in steps 10 and 11 of this section.
Step 15 The value displayed under the dashed line rep-
resents the as received reading for the .1 Vdc measure-
ment. The reading will look something like follows:
——–––— 0.1V
+.099998 RefCheck
Take note of the measured value.
Step 16 To repeat taking the as received readings press
the enter key to return to the 1.0 Vdc as received reading
screen. To exit the as received readings mode press the
CE key.
CE
As received readings for the mA and voltage measure-
ments performed through the miniature banana jacks on
the instrument keypad can be done by simply setting the
base unit up to measure the electrical parameter (cur-
rent or voltage) to be tested and inputting a series of
known values to the correct jacks. Refer to Section 7.0
to determine the set up procedure for the measurement
of current and/or voltage inputs. As received readings
are now completed.
Section 27.4 Adjustment/Calibration
Base Unit Electronics
Step 1 With the calibrator on and displaying pressure
measurement data press the set up key.
SET
UP
Step 2 Using the arrow keys locate the text “Calib” in
the set up menu:
Calib RTmodule
Using the appropriate arrow keys select the text “Calib”
from the set up menu.
Step 3 When the calibration function has been selected
it will flash on the display:
Calib RTmodule
Step 4 With the text “Calib” displayed and flashing
press the enter key.
ENT
Step 5 The calibrator will respond by displaying:
Access code?
.000000
Step 6 Enter the 5 digit calibration access code pro-
vided with the calibrator base unit:
Access code?
12345
Step 7 With the correct access code displayed press
the enter key.
ENT
The calibrator will respond by displaying:
Electrical
Pressure
The electrical calibration process allows for the calibra-
tion of the current and voltage input measurement capa-
bility of the base unit as well as the calibration of the 0/1
Vdc analog component of the interface between the base
unit and the Quick Select module in use.
Step 8 Use the arrow keys to select the word “electri-
cal.” When selected the word will flash on the instru-
ment display:
Electrical
Pressure
Step 9 When this screen appears, the word “Electrical”
for electrical recertification is already flashing. There-
fore, press the enter key to commence the electrical
calibration.
ENT
The calibrator will respond by displaying:
Calibration
Reference Check
Step 10 Select the text “Calibration.” When selected the
word calibrate will flash on the display of the calibrator:
Calibrate
Reference Check
Step 11 With the text “Calibrate” flashing press the
enter key.
ENT
Step 12 Using the precision voltage source apply
1.00000 volt ±50 microvolts to Module Bay #1.
To apply the 1 Vdc signal to the calibrator connect the
precision voltage generator so that the positive line is
connected to Pin 7 and the ground is connected to Pin 6.
These pins are located in the connector in Module Bay
#1 as shown below.