Fluke Calibration RPM4, Руководство по эксплуатации и обслуживанию

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RPM4™ OPERATION AND MAINTENANCE MANUAL
Page 54
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.