Fluke RPM4 manual 3 3STAB, Display resltn Hi 0.0010 %FS

RPM4™ OPERATION AND MAINTENANCE MANUAL

digit to the right. For example, resolution of 0.001 % on a range of 150 kPa is 150 X 0.001 % = 0.0015 which is rounded down to 0.001 kPa.

Default resolution is 10 ppm of active range span. Resolution is set automatically by AutoRange (see Section 3.3.4).

OPERATION

To access the resolution function, press [SETUP], <2res>. The display is:

Display resltn: Hi 0.0010 %FS < and >

Use the cursor control keys to set the desired level of resolution. Press [ENT] to return to the MAIN RUN screen with the new resolution setting active or [ESC] to make no changes.

The resolution setting is range specific. A resolution setting made in one range does NOT affect other ranges.

The measured pressure resolution is fixed for altitude units at 1 m in meters and 1 ft in feet.

The maximum resolution setting is limited in AutoRange ranges that are less than 10% of the Q-RPT default full scale.

3.4.3 <3STAB>

PURPOSE

To view and/or adjust the stability test that is the Ready/Not Ready criterion for the active RPT and range.

See Section 3.2.1 Pressure Ready/Not Ready Indication.

PRINCIPLE

RPM4 continuously monitors the rate of change of pressure measured by the active RPT and range and compares this rate to the stability limit to make a Ready/Not Ready determination (see Section 3.2.1 Pressure Ready/Not Ready Indication). The stability function allows the stability limit to be adjusted by the user to increase or decrease the stability required for a Ready condition to occur.

The default stability limit is + 0.005% FS of the active range.

The stability limit is separate and different from the Rate DISPLAY function (see Section 3.3.6.2) which allows the current rate of change of pressure to be displayed.

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