DH Instruments E-DWT-H, Руководство по эксплуатации и обслуживанию

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3. OPERATION
Page 37 © 2009 DH Instruments, a Fluke Company
RPT In dual Q-RPT RPM4-E-DWT models, allows pressure measurement from both
Q-RPTs to be displayed simultaneously (see Section 3.7.7.4).
HI/LO Records and displays maximum and minimum pressures measured (see
Section 3.7.7.5). This function is used to keep track of the minimum and
maximum pressure observed in a system over a period of time or to monitor if
a pressure min/max limit has been exceeded.
FREEZE Captures and displays the pressure measured by the active range of
RPM4-E-DWT when the
[ENT] key is pressed (see Section 3.7.7.6). This
function is useful to record the pressure present at the time of an operator
observed trigger event, for example when the needle of an analog gauge is on
the nominal point or when a switch activates.
CLEAN Blanks out the second line of the display (see Section 3.7.7.7). This function is
used when a simple display of pressure measured by the RPM4-E-DWT active
range with minimal additional information is desired.

OPERATION
To set the DISPLAY function press [DISPLAY] from the main run screen.
The display is:
1Avg 2Rate 3Dev 4RPT
5Hi/Lo 6Freez 7Cln
The cursor is on the active DISPLAY function. Selecting a DISPLAY function returns to the
main run screen with the selected function active. See Sections 3.7.7.1 to 3.7.7.7 for
information on each of the DISPLAY choices.
Note
•
The DISPLAY selection is NOT range specific. A DISPLAY selection
made in one range applies to all ranges.
•
The default DISPLAY function is Rate which causes the second line of
the display to show “R” followed by the current rate of change of
pressure in current pressure units per second.
•
To access AutoTest, the current DISPLAY function selection must be
one that does not use the ENTER key: Rate, RPT, Clean.
3.7.7.1 Avg (Average)

PURPOSE
To activate the Average DISPLAY and/or adjust the period of time over which
averaging occurs.
Note
See Section 3.7.7.  Principle.
 OPERATION
To access the Average DISPLAY, press [DISPLAY], <1Avg>. The display is:
1. Edit field for averaging period in seconds.
Default is 20. Minimum 1, maximum 999.
Averaging Period:
20 s
Edit the averaging time period if desired. Press [ENT] to return to the main run
screen with the Average DISPLAY active.