Fluke RUSKA 7252, Руководство пользователя

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Local Operation
Menu
4
4-15
Atmosphere
The nominal barometric pressure value for the location that the Calibrator is utilized
should be entered for atmosphere. On gauge mode instruments, this number is used to
calculate the density of the test port pressure medium and to correct for head pressure
variances between the reference port of the Calibrator and the DUT.
Pressure Filter
Pressure Filter is used to adjust the degree to which the front display pressure value is
filtered. A value of four (4), is the default value. As the value increases, the filtering level
increases, however, the display update rate reduces. Typical filter values would range
between 1 and 10. For pressure sensors with full scale ranges of 1 psi (7 kPa) or less, a
filter value up to 30 is typically recommended.
Changing the Number of Decimals
Each unit has a default number of decimal places used for pressure display. This may be
adjusted up or down by one decimal place.
1.
The decimal digits are set from the Setup | User | Menu . From the Main Menu
(press PREVIOUS until the Main Menu appears), press Menu [ F6 ] | Setup [ F2 ] |
User [ F2 ].
2. Turn the rotary knob until the label “Display digits” is highlighted.
3. Turn the rotary knob further until the desired number of digits from the default
resolution is highlighted (-1, 0, +1), and then press the ENTER key to select.
Key Click
The Calibrator can be configured to emit a “clicking” sound each time a key is pressed.
1.
The key “click” is set from the Setup | User | Menu . From the Main Menu (press
PREVIOUS until the Main Menu appears), press Menu [ F6 ] | Setup [ F2 ] |
User [ F2 ].
2. Turn the rotary knob to highlight “Key click” and then highlight either on or off.
3. Press the ENTER key to select.
Menu | Setup — Units
In addition to the standard units of measure provided by the Calibrator, four user-defined
units are available. To create a user-defined unit, the user enters a name that is one to ten
characters long and a conversion factor that is a multiple of kiloPascals (kPa).
For example, using the information from Table 2-1, the conversion factor for millitorr or
one micron of mercury at 0
°
C is calculated as follows.
kPa
psi
x
psi
C mmHg
C mmHg
Torr
x
Torr
mTorr
x kPa mTorr
x
1
1450377 . 0
0193377 . 0
0 1
0 1
1
1
1000
0
0
=
thus the conversion factor simplifies to
6180 . 7500 x kPa mTorr
=