DH Instruments PPC2+, Руководство пользователя

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PPC2+™ Operation and Maintenance Manual
Page 65
©2001 DH Instruments, Inc.
3.4.3 PresU
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PURPOSE
To customize the selection of pressure units that will be available for selection from the
[UNIT] function key.
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PRINCIPLE
The [UNIT] function key makes available a choice of six default pressure units (US or SI
units depending on whether the PPC2+ has been factory set as US or SI) (see
Section 3.2.2). PPC2+ also supports many commonly used units other than those
included in the default set up. These units can be made available for active selection by
customizing the UNIT function using by pressing [SPECIAL] and selecting <3PresU>.
This allows PPC2+ to offer a very wide selection of units while simplifying day to
day operation. The typical user will customize the [UNIT] function key to support his/her
six most commonly used units.
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OPERATION
To customize the [UNIT] function key, from the main run screen press [SPECIAL] and
select <3PresU>. The display is:
1. Entry field to select which unit position (1 - 6) of the
UNIT function key menu is to be changed.
Enter the number of the unit position that you would
like to change. The display becomes:
Select the desired pressure unit category (SI units include units
based
on SI such as
mmHg), then select the desired unit from the unit menu.
The units available are listed in Table 8.
Table 8. UNIT Function - Available Units
<1SI> <2other> <3altitude> <4user>
<1Pa>
<2kPa>
<3MPa>
<4mbar>
<5bar>
<6mmHg>
<7mmWa>
<1psi>
<2psf>
<3inHg>
<4inWa>
<5kcm2>
<1feet>
<2meters>
3altitude 4user