DH Instruments PPC2+, Руководство пользователя

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PPC2+™ Operation and Maintenance Manual
©2001 DH Instruments, Inc.
Page 18
11. Indicates whether the number following is target pressure <T>, rate of change of pressure <R> or
current deviation from target value <D>) (see Section 3.2.3).
Target pressure <T> is indicated when:
•
Dynamic control is active and pressure is Not Ready (<
↑
> or <
↓
>)
•
Static control is active and control valves are operating.
Deviation <D> is indicated when:
•
Dynamic control is active and pressure is Ready (<*>).
Rate of change <R> is indicated when:
•
No control is active (e.g., control is suspended or system is vented.)
•
Static control is active, and NO valves are active.
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WSX_^O]:\O]]SXQKUOc\O]^Y\O]P_VVZYaO\^Y^RONS]ZVKc>RO]M\OOX]K`O\^SWOMKXLO
MRKXQONY\]M\OOX]K`SXQMKXLOMYWZVO^OVc]_ZZ\O]]ON ]OO=OM^SYX
3.1.2 GENERAL OPERATING PRINCIPLES
3.1.2.1 MAIN 4 X 4 KEYPAD LAYOUT AND PROTOCOL
The PPC2+ has a 4 x 4 keypad for local operator access to direct functions, function
menus and for data entry.
1. The Function/Data keys allow very commonly
used functions to be accessed directly by a single
keystroke when pressed from the main run screen.
The name of the function is on the bottom half of
the key (see Section 3.2). These keys enter
numerical values when editing.
2. The Editing and Execution keys are for causing
execution, suspending execution, backing up in
menus and editing entries.
3. The Menu/Data keys provide access to function
menus when pressed from the main run screen.
The menu name is on the bottom half of the key.
The SETUP menu is for more frequently used
functions (see Section 3.3). The SPECIAL menu is
for functions that are not generally used as a part of
day to day operation (see Section 3.4). These keys
enter numerical values when editing.
Figure 3. Keypad Layout
2
.
SETUP
0
SPECIAL
1 2
LEAK
CHECK
3
ANALOG
4
UPPER
LIMIT
5
SEQ
6
CUSTOM
CONTROL
7
RANGE
8 9
+ / -
ESCAPE
ENTER
CONTROL
3