RPM4™ OPERATION AND MAINTENANCE MANUAL

When RPM4 is initialized as an external device to a PPC3 pressure controller, the RPM4 front panel keypad is locked out and the second line of the display becomes:

<PPC3

EXT DEV: IDLE>

(if

RPM4 is initialized by PPC3 but not currently in use)

<PPC3

EXT DEV: ACTIVE>

(if

RPM4 is initialized by PPC3 and is currently in use)

After using an RPM4 as an external device for a PPC3, cycle power to return to the previous RPM4 settings, restore front keypad capability and return to the normal main run screen.

3.3.6.1AVG (AVERAGE)

PURPOSE

To activate the Average DISPLAY and/or adjust the period of time over which averaging occurs.

See Section 3.3.6.  Principle.

OPERATION

To access the Average DISPLAY, press [DISPLAY], <1Avg>. The display is:

 

Averaging Period:

1. Edit field for averaging period in seconds.

20 s

Default is 20. Minimum 1, maximum 999.

 

Edit the averaging time period if desired. Pressing [ENT] returns to the main run screen with the Average DISPLAY active.

With the Average DISPLAY active the main run screen is:

1.Average measured over last completed averaging period.

2.Standard deviation of last completed averaging period.

3.Countdown in seconds until completion of on- going averaging period.

96.929 kPa a

Hi

δ 0.0007

18Avg

The Average DISPLAY has a second screen that allows the instantaneous pressure readings to be viewed while an averaging cycle is running. The instantaneous Average screen is:

1.Instantaneous pressure values at RPM4’s normal update rate.

2.Current rate of change of pressure in pressure units/second.

3.Countdown in seconds until completion of on- going averaging period.

96.929

kPa a

Hi

R 0.0025

 

18Avg

The [+/-]key toggles between the main run Average screen and the instantaneous values Average screen.

© 2004-2007 DH Instruments, a Fluke Company

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Fluke RPM4 manual AVG Average, Averaging Period, 20 s, 0007 18Avg, KPa a 0025 18Avg