PPCK+™ Operation and Maintenance Manual
Page 17
©2001
DH Instruments, Inc
.
3.
O
PERATION
3.1
GENERAL/MANUAL OPERATION
PPCK+ is designed to balance simple, intuitive operation and the availability of a wide variety of
functions with a high level of operator discretion. The local operator interface is through a 2 x 20
display, 4 x 4 keypad and four manual pressure control keys on the front panel.
3.1.1
MAIN RUN SCREEN
The PPCK+ main run screen is its home display that is reached on power-up and from which
other functions and menus are accessed. It is the very top level of all menu structures.
The main run screen is where the operator works with PPCK+ to set and read pressures.
It provides complete information on the system's current configuration and operating status.
1. Ready/Not Ready indication (see Section 3.1.2.5):
<*> when Ready, <
↑
> or <
↓
> indicating direction of
measured pressure evolution if Not Ready.
2. PRESSURE1: Numerical value and sign of pressure
measured by active RPT and range.
3.
UNIT: Current pressure unit of measure (see
Section 3.2.2).
4. Pressure measurement mode: <g> gauge, <a> absolute (see Section 3.2.2).
5. Head correction indication: Indicates whether a head correction is applied. <h> if applied, < >
(blank) if not (see Section 3.2.7).
6.
Autozero indication:
Indicates whether the autozero function is ON or OFF.
<z>
if ON;
< >
(blank) if OFF (see Section 3.4.1).
7.
Range
indicator:
Indicates
<H>
for high RPT and
<1>
for low range,
<2>
for mid range,
<3>
for
high range (see Section 3.2.1).
8.
Sequence counter:
Not used in PPCK+.
9.
Control mode indicator:
Pressure control mode (
<S>
for static,
<D>
for dynamic,
<M>
for
manual) with a
<C>
appended if custom control settings are in use. Shows
<VLV>
when the inlet
or exhaust valve is in its opening routine (see Sections 3.1.2.3, 3.1.2.4). The control mode
indicator characters flash when the system is controlling pressure (see Sections 3.2.3, 3.2.6).
10.
PRESSURE2:
Numerical sign and value of either target pressure
<T>
, rate of change of pressure
<R>
or deviation from target
<D>
. Target value and deviation are in the current pressure unit
of measure. Rate of change of pressure is in current unit per second (see Section 3.2.3).
2
3
7
*PRESSURE1 UNITM hzSR
TPRESSURE2 CC NN/NN
Summary of Contents for PPCK PLUS
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