Ashcroft ATE-100 Handheld LCD Digital Calibrator - Manual (Page 68)

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Revision 4.6 3/2004
Linearity Cal
Yes No
Step 18 If calibration activity is to be limited to zero and
span, using the arrow keys select the word no (when
selected the word “no” will flash on the display). If lin-
earity adjustment is to be performed proceed to Step 21.
Linearity Cal
Yes No
Step 19 With the word no flashing press the enter key.
ENT
The calibrator will respond by displaying:
Calibration done
Save Cancel
Step 20 To save the new zero and span values to
memory, thereby overwriting the previously stored
values in the EEPROM, select the word “Save” and
press the enter key. To discard information and retain the
information currently in the EEPROM of the calibra-
tor select “Cancel” and press the enter key . If the save
option is selected proceed to Step 21. To re-linearize
module proceed to Step 26.
Step 21 If “cancel” is selected the calibrator will exit
the calibration mode. If “save” is selected the calibrator
will prompt you to enter the date of the new calibration
as follows:
mmddyy
- - - - - -
Step 22 Using the number keys enter the current date
such as:
mmddyy
031196
For March (03), eleventh (11), 1996
Step 23 With the desired date entered and displayed,
press the enter key.
ENT
Step 24 Turn off the calibrator and install the desired
Quick Select module.
Step 25 Turn on the calibrator to resume general pres-
sure measurement activities.
Step 26 To re-linearize a Quick Select pressure module
select the word “Yes” to the linearity query.
Important Note: If full recalibration of the pressure
module is desired the zero and span adjustment must
be reset through these procedures prior to entering the
linearization mode. The zero and span values established
in these procedures will be used for the zero and span
values of the new calibration data. If zero and span are
not reset at this time the recalibration will use the values
for zero and span stored in memory from the previous
zero and span activities.
Linearity Cal
Yes No
Step 27 With the word “Yes” flashing press the enter key.
ENT
The calibrator will respond by displaying:
Clr Old Lin Data
Cancel Proceed
Step 28 Use the arrow keys to select “Proceed” to con-
tinue the linearization process. Select “Cancel” using the
arrow keys to discontinue the re-linearization process.
***WARnInG***
Entering “Proceed” will erase linearization data in the
EEPROM of the calibrator.
Clr Old Lin Data
Cancel Proceed
Step 29 To continue the linearization process, with the
word “Proceed” flashing press the enter key.
ENT
The calibrator will respond by displaying:
Apply and enter
value 1.00000
Step 30 Apply the pressure required for point one and
enter the numerical value, using the number keys of the
exact pressure level applied. (Use the engineering unit in
use for the left pressure module at the time the calibra-
tion process was started). When point 1 has been applied
and entered the display will look as follows for calibra-
tion point of 10.002.
Apply and enter
value 10.002