PPC3™ OPERATION AND MAINTENANCE MANUAL
© 2002-2007 DH Instruments, a Fluke Company Page 52
OPERATION
To access the jog step adjustment function, press
[SETUP], <3jog>. The display is:
Jog step size: IH
0.020 kPa
Edit the value of the jog step as desired. Press [ENT] to return to the MAIN RUN screen with
the new jog step size active. Press [ESC] to return to the MAIN RUN screen with no change
to the jog step size.
Pressing [ ] and [ ] simultaneously is a short cut to the <Jog step size:> menu.
The jog step setting is range specific. A jog step setting made in one range does NOT
affect other ranges.
3.4.4 <4UL> (UPPER LIMIT)
PURPOSE
To set the upper and lower limit pressure value for a pressure range and measurement mode.
PRINCIPLE
The UPPER LIMIT function allows the setting of a maximum pressure not to be exceeded
when using a specific range and measurement mode. Absolute and gauge measurement
modes (see Section 3.3.3, PRINCIPLE) have their own, specific limits. Negative gauge
mode and the BA100K Q-RPT also have a lower limit.
Automated pressure control targets greater than the upper limit or lower than the lower limit
are not accepted. When the pressure measured by PPC3 exceeds the upper limit or lower limit,
automated or direct manual pressure control is aborted and an intermittent warning beep sounds.
The UPPER LIMIT function is most often used to protect the device or system connected to
the PPC3 TEST(+) port from accidental overpressure.
The default upper limit is 105 % of AutoRange span or 102 % of Q-RPT default (maximum)
range, whichever is lower. The default lower limit is - 110 kPa (- 16 psi), except with a
BGxxx Q-RPT in which the default lower limit is the negative equivalent of the upper limit. The
default lower limit of a BA100K is 66 kPa (9.6 psi).
OPERATION
To view or edit upper and lower limits press [SETUP], <4UL>.
If the current measurement mode is absolute or gauge, there is an upper limit only.
The display is:
1. Entry field for upper limit value in active pressure unit of
measure and measurement mode.
Upper limit: IH
204.000 kPa a
Edit the upper limit value as desired. The maximum upper limit is 105 % of AutoRange range
or 102 % of default QRPT range, whichever is smaller. Press [ENT] to return to the MAIN
RUN screen with the new upper limit active. Press [ESC] to return to the MAIN RUN screen
with no change to the upper limit.
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