3. OPERATION

 

 

RPT

If the RPM4 has two Q-PRTs, allows pressure measurement from the two

 

RPTs to be displayed simultaneously (see Section 3.3.6.4). This function is

 

particularly useful in dual Q-RPT RPM4s with independent TEST ports to

 

monitor two separate pressures simultaneously. It is also used to when the

 

Hi Q-RPT is in differential measurement mode, to observe the line pressure

 

measured by the Lo Q-RPT.

HI/LO

Records and displays maximum and minimum pressures measured (see

 

Section 3.3.6.5). 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

 

when the [ENT] key is pressed (see Section 3.3.6.6). 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 was on the nominal

 

point or when a switch activates.

CLEAN

Blanks out the second line of the display (see Section 3.3.6.7). This function

 

is used when a simple display of pressure measured by the RPM4 active

 

range without additional information is desired.

OPERATION

To set the DISPLAY function press [DISPLAY] from the main run screen.

The display is:

The cursor is on the active DISPLAY function. main run screen with the selected function active.

Display menu choices include:

1avg 2rate 3dev 4RPT 5HiLo 6freeze 7clean

Selecting a display function returns to the

<1avg>

Display average pressure and standard deviation. Specify averaging time period

 

(see Section 3.3.6.1).

<2rate>

Display pressure rate of change (see Section 3.3.6.2).

<3dev>

Display deviation of the measured pressure from a target value and specify

 

the target value (see Section 3.3.6.3).

<4RPT>

Display the pressure measured by the second Q-RPT in RPM4s with two

 

Q-RPTs (see Section 3.3.6.4).

<5HiLo>

Display the maximum and minimum pressure observed since HiLo reset

 

(see Section 3.3.6.5).

<6freeze> Capture and display the value measured when [ENT] is pressed (see Section 3.3.6.6).

<7clean> Leave the second line of the display blank (see Section 3.3.6.7).

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. The default DISPLAY function in differential mode is RPT.

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© 2004-2007 DH Instruments, a Fluke Company

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Fluke RPM4 manual 1avg 2rate 3dev 4RPT 5HiLo 6freeze 7clean