PPCK+™ Operation and Maintenance Manual
©2001
DH Instruments, Inc
.
Page 42
3.2.10
[SET P] (SETTING PRESSURE AUTOMATICALLY)
PURPOSE
To set a pressure automatically.
See Sections 3.2.3, 3.1.2.4 for information on setting the control mode (Static
or Dynamic).
PRINCIPLE
PPCK+ automatically sets and holds pressure to a user designated target value.
This feature allows pressure values to be set easily and precisely by simple numerical
entry from the front panel or by remote command (see Sections 3.1.2.3, 3.1.2.4).
Automatic pressure setting is controlled from the main run screen using
[ENTER]
and
[SET P]
from the main run screen.
[SET P]
causes the pressure target entry screen to
be displayed and then launches automated pressure control.
[ESCAPE]
aborts
automated pressure control.
PPCK+ supports two pressure control modes to meet different pressure setting and
controlling requirements:
static
and
dynamic
(see Section 3.1.2.4). Control initiated
using
[SET P]
executes in the current control mode. Use
[CONTROL]
to change control
modes (see Section 3.2.3).
Manual pressure control keys are also available to adjust pressure directly without a
target value (see Section 3.1.2.2). Pressures set manually are not controlled after the
setting process.
For information on PPCK+’s pressure control technology see Section 3.1.2.3.
OPERATION
To set a pressure, press
[SET P]
from the main run screen. The display is:
1.
Ready
/
Not Ready
indication, current pressure, units,
measurement mode, range (regular first line of main
run screen).
2. Entry field for target value of pressure to be
set automatically. Comes up with last entry or zero if
pressure measurement units have been changed, range
has been changed, or system has been vented.
Use the numerical keys and editing keys to enter the target pressure value desired (see
Section 3.2.10.1 for information on zero pressure commands). Also, the
[
←
]
and
[
→
]
keys can be pressed to
jog
the current target pressure value displayed down or up by the
current pressure control hold limit.
2
* 2000.00 psi g H3
Target: 3000.00
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