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1.
To zero the manometer using Referenced to Absolute Zero,
start with the unit turned OFF and use the following
keystroke sequence:
Keystroke
1. Press ON/OF button.
2. Connect the HHP360 to
a vacuum source capable
of a vacuum of 100
microns absolute pressure
or less.
3. Pull a full vacuum.
4. Press MIN/MAX and
TARE keys at the same
time. (See figure 1 below.)
5. Press the PRGM key.
Figure 1
8 of 36
Display
The display briefly shows the
header name and full scale range
of the unit in the last engineering
units selected. The manometer
then goes into the Measure
Mode where the applied pressure
and engineering unit of measure
are displayed.
Display should read close to
zero. (See note on next page)
Top line of display reads
"ZEROING SOURCE:"
Bottom line of display reads
"REF TO ABS ZERO"
Top line of display reads "ZERO
IN PROGRESS" while bottom
line counts down from 9. Zeroing
is complete when unit returns to
Measure Mode.
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