Fluke PG9000 Series, Operation And Maintenance Manual

Page: 83 / 202

3. GENERAL OPERATION
Page 73 © 2011 Fluke Calibration
3.10.9.1 <2target>

PURPOSE
To adjust the distance from midstroke to which the piston position must be set
before the automated generation system considers the piston floating process
complete (see Sections 3.10.9, 3.5).

OPERATION
To adjust the AutoGen piston float target press [GEN] , <2target> . Edit the value of
the target as desired. The default is + 1 mm. The entry should not 2.5 mm.
3.10.9.2 <3raise>

PURPOSE
To turn ON and OFF a function that causes the automated generation component to
raise the PG9000 piston to the top of its stroke before automated mass manipulation
by an AMH. This can avoid a large pressure change which may occur in certain
circumstances when the AMH lifts the mass load off of the piston.

OPERATION
To turn ON and OFF the raise piston before mass loading function, press [GEN] ,
<3raise> . The cursor is on the choice corresponding to the current state. Select <1no>
for the piston not to be raised or <2yes> to raise the piston. The default is <1no> .
3.10.9.3 <4UL>

PURPOSE
To read and/or set the UPPER LIMIT (UL) of the automated pressure generation
component used by AutoGen. This function is used to protect against accidental
overpressure when using the PG9000 automated pressure generation function (see
Section 3.10.9 and the generation component’s Operation and Maintenance Manual,
UL section).

OPERATION
To view or set the UPPER LIMIT of the automated pressure control component
used by AutoGen, press
[GEN] , <4UL> .
If AutoGen is not currently ON, the control component UPPER LIMIT cannot be
accessed and an error message is displayed.
If AutoGen is ON, the current UPPER LIMIT of the automated control component
is displayed and can be edited.
The automated pressure control component will abort pressure generation and
beep repeatedly if its UPPER LIMIT is exceeded.
3.10.9.4 <5tol>

PURPOSE
To read and/or set the pressure measuring tolerance of the pressure controller used by
AutoGen to automate pressure control.
Note
This function is used when the pressure controller is a PPC3 or
PPC4.

PRINCIPLE
The control tolerance function can be used to reduce the time required to set pressure
and float the PG9000 piston when the pressure controller used is significantly more
accurate than the default tolerance value. The tolerance can also be described as the
degree of agreement between the pressure control’s pressure measurement and the
pressure value set by the PG9000 when the piston is floating. In general, making the