Fluke PG9000 Series, Руководство по эксплуатации и обслуживанию

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2. INSTALLATION
Page 27 © 2011 Fluke Calibration
If PG900 fails to reach the main run screen, service may be required. Record the sequence
of operations and displays observed and contact a Fluke Calibration
Authorized Service
Provider (see Table 28).
2.4.2 Verify correct Piston-Cylinder and Mass Set
Information
PG9000 uses stored piston-cylinder and mass set metrological information to calculate the
reference pressures it defines (see Section 3.1). For the pressure values to be correct, the
stored metrological information on the piston-cylinder, mass set and mass loading bell must
be correct. Before using PG9000 for accurate pressure definition, the validity of the stored
information should be verified. This consists of comparing the piston-cylinder, mass set and
mass loading bell information stored in PG9000 to the information in the piston-cylinder and
mass set calibration reports.
To verify the PG9000 piston-cylinder, mass set and mass loading bell information, use the
piston-cylinder and mass set viewing capabilities accessed by pressing
[SPECIAL] ,
<1PC/MS> (see Section 3.12.1). Compare all the information contained in the PG9000
piston-cylinder, mass set and mass loading bell files to the information on the current
piston-cylinder, mass set and mass loading bell calibration reports.
2.4.3 Set Local Gravity Value
PG9000 uses the value of local acceleration due to gravity (g
l
) in its calculation of the
reference pressure (see Section 3.1). The correct value of local acceleration due to gravity at
the site of PG9000 use must be entered. This is accomplished by pressing
[SPECIAL] ,
<6gl> (see Section 3.12.6) and editing the value of local gravity. Edits to this value may be
locked out due to user access level restrictions. See section 3.12.4.5 for how to change
access level restrictions. Set the access restriction to “none” and then return to editing the
value of local gravity.
2.4.3.1 Check/Set Security Level
PG9000 has a security system based on User Levels. By default, the security
system is set to “
low” and no password is required to change the security level.
This level locks out edits to critical metrological data. See Section 3.12.4.5 for
information on the security system. As part of the PG9000 startup, set your
desired security level and a password.

Caution
PG9000 is delivered with the security level set to low to avoid
inadvertent altering of critical internal settings but with access
to changing security levels unrestricted. It is recommended
that the “low” security level be maintained at all times and
password protection be implemented if control over setting of
security levels is desired.
2.4.4 Verify Input Sources
PG9000 uses many variables in calculating defined pressures. The sources of the variables
are determined by the current SETUP file. SETUP files are viewed, created, edited and
selected using the SETUP function accessed by pressing
[SETUP] (see Section 3.11). By
default, the factory SETUP file is selected on a new PG9000, but the operator may desire to
customize the settings by creating a new setup file. The factory setup file assumes that
PG9000’s internal measurement values will be used whenever possible.