DH Instruments PPC4, Руководство по эксплуатации и обслуживанию

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4. BASIC USER INTERFACE
Page 77 © 2009 DH Instruments, a Fluke Company
to enter a password to access the user level menu. This condition, with a security
level of
<Lo> , is the factory default.
If there is an active password , the PPC4
password entry screen appears. The user
must enter the user defined password or
the factory secondary password to
proceed further:
SN: nn XXXX
Password: pppppp
The first field, <nn> , is the serial number of the PPC4, followed by a second field,
<XXXXX> a number that the PPC4 changes each time the secondary password is used.
The third field, <pppppp> is for user entry of the normal password.
Note
The factory secondary password is available in case the user’s
password has been misplaced or forgotten. It can be obtained
by contacting a DHI Authorized Service Center (see Table 31).
The factory secondary password is different for all PPC4’s and
changes each time it is used.
4.5.6 <Spec>, <Punit>

PURPOSE
To customize the selection of pressure units of measure.

OPERATION
From the Main Run Screen press <Spec> , <Punit> . The display is:
1. Entry field to specify which unit position (1 – 6) of the
<Spec>, <Punit> function key menu is to be changed.
Set up unit #6 IH
Enter the number of the unit position that you would
like to change. The display becomes:
Unit#6
♦SI ♦Other
♦Altitude ♦User
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 of measure available are listed in Table 14.
Table 14. Unit Function - Available Units of Measure
<SI> <Other> <Altitude> <User>
<Pa>
<hPa>
<kPa>
<MPa>
<mbar>
<bar>
<mmHg>
<mmWa>
<psi>
<psf>
<inHg>
<inWa>
<kcm2>
<Torr>
<mTor>
<feet>
<meters>
Note
If the pressure unit selected represents a water column (inWa, mmWa,
mWa) (inches/millimeters/meters of water), the reference temperature
for water density must we specified in a separate menu (choices are