Fluke RUSKA 7050, Руководство пользователя

Страница: 66 / 88

RUSKA 7050, 7050 & 7050LP
Users Manual
6-6
2. The Step 1, actual value will be highlight. This is your first pressure point in the
calibration procedure.
Note
If the PPI has the Vacuum (Negative Gauge Option) or the Barometric
reference, the first two points in the procedure will show the negative
pressures that should be generated to calibrate the sensor in the negative
gauge direction. You are not required to perform both the negative and the
positive gauge calibrations every time the unit is calibrated. If you want to
calibrate only the positive pressures, using the rotary knob move the
highlighted curser down to the first positive pressure step and generate all
of the positive pressures in the procedure. When you are complete with the
positive points, hit the Done key, the unit will maintain the older
coefficients for the negative gauge portion of the sensor and calculate new
coefficients for the positive gauge ranges. Conversely, you can calibrate
just the negative gauge section if desired. However, you must complete all
of the positive or negative gauge steps in the procedure to complete a valid
calibration.
3. Using your calibration standard, generate the pressure shown in the Apply column.
When the measured pressure stabilizes, use the PPI’s numeric keypad to enter the
actual pressure applied by the calibration standard and then press ENTER. Do not
enter the measured pressure reported by the PPI. If necessary, use the CLEAR key to
correct a mistake in the edit field. If the actual pressure applied is within the indicated
tolerance, the unit will accept that point and the highlighted curser will automatically
scroll down to the next calibration step.
Note
If the actual pressure is outside of the tolerance for the requested mid-point
pressure, Error — 222 Data out of range will occur. Acknowledge this
error by selecting OK [F6], then re-enter the actual pressure, repeating
Step 2, number 1, if necessary.
Step 3
1. Generate the next pressure calibration point requested by the PPI. Apply this pressure
using calibration standard and follow the instructions in Step 2, number 3, entering
the actual pressure applied.
2. Repeat this procedure until all of the calibration steps are complete. Review the Adj.
%FS field to see 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. To re-enter a point, use the rotary knob and move
the highlighted curser to the actual pressure values in the step in question. Generate
the requested apply pressure using the standard and enter then new actual value when
stabilized.