DH Instruments PPCK PLUS, Operation And Maintenance Manual

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PPCK+™ Operation and Maintenance Manual
Page 41
©2001 DH Instruments, Inc .
Once the leak check countdown has completed, the results screen is displayed:
1. Net change in pressure over the leak check
time period.
2. Indicator of range in which leak check was run.
3. Average rate of change of pressure over the leak
check time period.
Pressing [ENTER] from the leak check results screen following execution of a leak check
starts a new leak check routine directly without having to go through the leak check
menu. Pressing
[ESCAPE] returns to the main run screen.
Pressing [ENTER] while counting down a leak check or when in leak check results screen
starts a new leak check sequence.
3.2.9 [RES] (RESOLUTION)

PURPOSE
To set the resolution with which measured pressures and other indications and settings
are displayed.

PRINCIPLE
The resolution with which the pressure measured by PPCK+ is displayed can be
adjusted. This feature can be used to reduce the resolution when lower precision
measurements are being made and additional digits might confuse or distract the
operator.
The resolution setting determines the number of digits with which pressure is displayed.
The desired resolution is calculated based on the full scale of the range and then
rounded to the furthest digit to the right.
The default resolution setting is 0.001 %. The maximum resolution setting is 0.0001 %.

OPERATION
To access the resolution function, press [RES].
The display is:
Use the [
←
] and [
→
] keys to select the desired level of resolution. Press [ENTER] to set
the resolution and return to the main run screen.
The resolution setting affects the display of the measured pressure as well as other
indications and settings.
The resolution setting is range specific. A resolution setting made in one range does NOT
affect other ranges.
2
3
Δ
P -0.02 psi H3
Rate -0.026/sec
Measure resltn: H3
0.0010% FS < and >