Fluke Calibration RUSKA 7615, User Manual

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Local Operation
Measuring Pressure
4
4-3
Measuring Pressure
The Main Menu displays the measured pressure in double size numbers. To the right of
the pressure is the current unit and type (Tare or Absolute). The Main Menu can always
be reached by repeatedly pressing PREV Just below the measured pressure value is a
label stating either “High Speed” or “Precise”. This is to provide the user with an
indication of which sensor is actively displaying. During high-speed pressure control, the
system displays the word “High Speed” to indicate that the system is display the pressure
as measured by the high speed, lower accuracy pressure sensor (See Chapter 2, High
Speed System Transducer). Once the pressure stabilizes, the system then displays the
reading from the High Accuracy sensor (See Chapter 2, High Accuracy Pressure Sensor,
and Optional – Second High Accuracy Sensor) and indicates this by displaying the word
“Precise” as shown in the example below. For systems with multiple pressure ranges, the
full-scale pressure range (in the current unit of measure) of the active sensor is displayed
below the displayed unit of measure. In the example below, the active sensor range is a
10,000 psi full scale sensor.
27.16
PSI
Set Point 0.00
Measure Control
Measure
Vent Step
C
Step
D
Precise Range 10000.0
Menu
ABS
Multi-Range Sensor - Options
The RUSKA 7615 Calibrators are available as multi-range instruments. The number of
sensors available in an instrument can range from one to six. To select an active range,
from the main menu, select the MENU/MODE keys. The F5 function key is labeled as
“range”, and by depressing the F5 key, the system will cycle between the various
available full-scale pressure ranges. The full-scale ranges are displayed in the same unit
of measure that the measured pressure is actively displaying.
Note
To switch between pressure ranges, the actual measured pressure must be
less than 100 psi.
Selecting Pressure Units
The Calibrator uses the conversion factors listed in Chapter 2, Table 2-1, to translate the
pressure from kiloPascals to one of the Calibrator’s units of measure. These include
inches of mercury, kilopascals, bars, pound per square inch, feet, meters, knots, and
kilometer per hour. In addition to these predefined units, four user-defined units are
available.
1.
The pressure units are selected from the Units menu. From the Main Menu (press
PREV until the Main Menu appears) press Menu [F6] | Setup [F2] | Units [F3]. The
current units will be highlighted.
2. Use the Arrow Keys to highlight the desired pressure unit.
3. Press ENTER to accept the change. Press PREV to exit without changing the units.