DH Instruments E-DWT-10000-AF, Руководство по эксплуатации и обслуживанию

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E-DWT-10000-AF OPERATION AND MAINTENANCE MANUAL
© 2008 DH Instruments, a Fluke Company Page 28
Run automated leak checking routine.
Menu of commonly used setup features including
save/delete AutoRange ranges, set display
resolution, set stability limit, set upper/lower limit,
view AutoTest data
Select the display function for the
bottom line of the RPM4-E-DWT
display. Start or set functions such as Leak Check,
AutoTest and Freeze. ENTER values when
editing.
3.7.2 [RANGE]
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PURPOSE
To view and/or change the active pressure measurement range and associated settings.
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PRINCIPLE
An RPM4-E-DWT range is defined as a pressure span and associated settings (see Section
3.1.1).
The RPM4-E-DWT has two Q-RPTs. Each Q-RPT has a default range which is its maximum
span. The default ranges of the RPM4-E-DWT A70M/A7M-AF are 10 000 psi (A70M) and
1 000 psi (A7M). Additional ranges, lower than the Q-RPT’s maximum span, may be created
at any time using AutoRange (see Section 3.7.5) or AutoTest (see Section 3.1.3). Ranges
created using AutoRange or AutoTest may be saved, with their settings, for reactivation (see
Section 3.8.1).
The [RANGE] function key allows the available RPM4-E-DWT pressure ranges to be viewed
and selected.
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OPERATION
Pressing the [RANGE] function key activates the range viewing and selecting function.
When the [RANGE] function key is first pressed, the active range is displayed. For example:
1. Q-RPT designator.
2. Type of range. DF for the Q-RPT’s default range; AR for a range
created by AutoRange.
3. Q-RPT position designator.
4. Current pressure unit of measure.
5. Full scale pressure in current unit of measure .
Active A7M DF Lo
psi 1000g
Pressing the [RANGE] key again while in the RANGE functions toggles through displays of
the other available ranges, from lowest range to highest range.
To select a range to become the active range, press [ENT] while the range is displayed.
Any time a range change causes the active Q-RPT to change, the E-DWT Lo Q-RPT shut off
valve must be operated to connect or disconnect the Lo Q-RPT from the TEST port.
The green Lo Q-RPT valve position LEDs indicate the correct position of the Lo Q-RPT shut
off valve knob based on the Q-RPT currently in use (see Section 3.4).
Pressing [ESC] while in the RANGE function returns to the MAIN RUN screen without
making a range change.
The E-DWT Lo Q-RPT shut off valve protects the Lo QRPT (1 000 psi max) from overpressure
when the Hi Q-RPT is in use. Familiarize yourself with E-DWT operation (see Section 3.4) before
changing ranges and applying pressures. Always turn the Lo Q-RPT shut off valve fully in the
direction of the lighted green LED before applying pressure.