Fluke RUSKA 7050, Руководство пользователя

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Maintenance
Calibration
6
6-5
Note
To exit the calibration procedure before the calibration coefficients have
been changed, press [CANCEL] any time during the procedure. Canceling
restores all previous calibration values.
Step 1
1. To begin Step 1 of the calibration process, select the Zeroset [F1] button. The zero
procedure will start when the reading is in-range and stable or when OK [F6] is
pressed. Press OK [F6] only if the zeroing conditions are stable. The zero calibration
will not be accurate if OK [F6] is pressed when conditions are unstable.
2. Wait until the zero procedure finishes. This may take several minutes. When the PPI
completes Step 1, the calibration screen will appear.
On High Pressure Models, pressure must be removed from the test port. If zeroing
an Absolute unit then the Test Port must be isolated.
Step 2
1. To begin step 2, use the calibration standard to apply the various pressures that will
be requested by the 7050. The number of pressure points required to calibrate the PPI
will vary based on whether the PPI is a 7050, 7050i or 7050LP and if it has a vacuum
(negative gauge) option. The screen will display a table noting the following
information;
Step The pressure step in the calibration sequence
Apply The pressure that the standard is to generate to the PPI.
Tolerance The tolerance about the apply value that can be generated by the
standard and still accepted by the PPI.
Actual The actual pressure value that was generated by the standard when the
point was accepted.
Adj. %FS Depicts the amount that the PPI corrected its output to align to the
standard. This is used as a trouble-shooting tool. If one point has a
significantly higher adjustment required than other points in the
calibration, this may indicate that there was an error in that specific
calibration point. The operator can re-check this pressure point prior to
completing and accepting the full calibration.