Owner manual

12 UPC5000/UPC5010 Operation & Maintenance Manual
3.7 Permanent Data Storage
After completing the above calibration procedures, the new data that has been entered into the computer must be
permanently stored. The sequence to do this is as follows:
1. Select the
DATA RECALL position of the rotary switch on the Condec Calibration Module (PN 60109).
2. Press the
STORE button on the module.
3. When the data is accepted, the four-digit number on the display indicates
1 020 for as long as the STORE
button is pressed.
3.8 Required Barometric Offset for Absolute/Gage Unit
Note: This section can only be completed after Sections 3.3 through 3.7 have been done.
Obtain the current barometric pressure from a pressure standard with an accuracy of .025% or better, to calibrate
the absolute zero at the current barometric pressure.
If the current barometric pressure is below 14.7 PSIA, the offset is positive, see Example 1. If the current
barometric pressure is above 14.7 PSIA, the offset is negative, see Example 2. If the current barometric pressure
is 14.7 PSIA, then no offset is needed.
Example 1:
If the current barometric pressure is lower than 14.70 PSIA, subtract the current barometric pressure from 14.70.
14.70 PSI: UPC5000/UPC5010 reference point
-14.55 PSI:
Current barometric pressure
0.15 PSI: Positive Delta Offset
Complete the following steps (refer to Figure 2-2 on page 4 and Figure 3-1 on page 8):
1. Open the
VENT valve (8) and close the COARSE ADJUSTMENT (2) valve.
2. Using the
RANGE SELECT switch (19), select the lowest pressure range on the UPC5000/UPC5010.
3. Select the
ZERO/SPAN position on the Condec Calibration Module (PN 60109). The
UPC5000/UPC5010 displays three dashes on the left side of the display to indicate this mode.
4. Press the
ENTER button on the Condec Calibration Module. The UPC5000/UPC5010 display reads zero.
Repeat this step for the mid and high ranges.
5. Close the
VENT valve (8). Select the lowest pressure range of the UPC5000/UPC5010.
6. Turn the
VERNIER (13) of the UPC5000/UPC5010 clockwise, creating a pressure until the display reads
0.15 PSI.
7. Depress the
ENTER button on the Condec Calibration Module. The UPC5000/UPC5010 display reads
zero. Repeat this step for the mid and high ranges.
8. Select
DATA RECALL on the Condec Calibration Module. The display shows 1XXX (three digits).
9. Press the
STORE button on the Condec Calibration Module. The display reads 1 020 or 1 377 when the
button is pressed.
Example 2:
If the current barometric pressure is above 14.70 PSIA, subtract the current barometric pressure from 14.70.
14.70 PSI: UPC5000/UPC5010 reference point
-14.75 PSI:
Current barometric pressure
-.05 PSI: Negative Delta Offset
NOTE: Normally the negative offset is small enough to prevent the need of a vacuum pump.