Fluke A70M User Manual
3. OPERATION
Page 29
© 2007 DH Instruments, a Fluke Company
OPERATION
To use the AutoRange function, press [AutoRange] and respond to the RPM4’s prompts.
Select AutoRange measurement mode: The screen is identical in appearance and
function to the [MODE] screen (see Section 3.3.3).
Select pressure unit of measure: The screen is identical in appearance and function
to the [UNIT] screen (see Section 3.3.2).
Enter the AutoRange full scale pressure: Enter the full scale pressure value in the
<------> entry field and press [ENT]. If the full scale value entered cannot be covered by
RPM4, an error message appears. If the full scale value can be covered, AutoRange
proceeds to the range display.
RPM4, an error message appears. If the full scale value can be covered, AutoRange
proceeds to the range display.
View proposed AutoRange range: The proposed AutoRange range screen is:
1.
Indication that this is a screen of the proposed AutoRange range.
2.
Designator and position of the Q-RPT that AutoRange has selected
to cover the AutoRange full scale and measurement mode.
to cover the AutoRange full scale and measurement mode.
3.
Pressure unit of measure specified in AutoRange.
4.
AutoRange full scale pressure in gauge mode and absolute.
AutoRange A70M Hi
psi 5000g/5000a
psi 5000g/5000a
If AutoRange selects a Q-RPT but you would like to use the other one, the [
]
and [
]
cursor
control keys may be used to toggle between Q-RPTs so that the other can be selected.
Accept proposed AutoRange: To accept the proposed AutoRange and go to the MAIN
RUN screen with the new AutoRange range active, press [ENT] or [AutoRange]. To
modify the AutoRange full scale, measurement mode or pressure unit of measure, use
[ESC] to back through the AutoRange screens and make changes.
modify the AutoRange full scale, measurement mode or pressure unit of measure, use
[ESC] to back through the AutoRange screens and make changes.
The HPMS Lo Q-RPT Isolation Valve protects the Lo Q-RPT (3 000 psi max) from
overpressure when the Hi Q-RPT is in use. Familiarize yourself with HPMS operation (see Section
3.2.5) before changing ranges and applying pressures. Always turn the Lo Q-RPT Isolation Valve
fully in the direction of the lighted green LED before applying pressure.
fully in the direction of the lighted green LED before applying pressure.
To verify or confirm the range from the MAIN RUN screen, use [+/-] or [RANGE] to view the
active range (see Section 3.3.1).
See Table 4 for a listing of all selections and settings affected by AutoRange and their values.
3.3.5
[LEAK CK]
PURPOSE
To run an automated leak check routine that determines the leak rate of the system
connected to the RPM4/HPMS TEST port.
connected to the RPM4/HPMS TEST port.
PRINCIPLE
The LEAK CHECK function is provided as a means of checking and quantifying the leaks that
may be present in the system connected to the RPM4/HPMS TEST port.
may be present in the system connected to the RPM4/HPMS TEST port.