4. Re-Calibration
This procedure requires a known pressure source of at least ±0.1% accuracy in order to fully utilize the accuracy potential of the DPG5000 (If not available, the gauge can be returned to OMEGA for re-calibration.)
Procedure:
A.Ensure the Gauge is at 0 psig (or vacuum if absolute), and adjust the zero as per instructions in step 1.
B.Apply full scale pressure to the pressure port and adjust the span (“S”) pot until the display reads the correct pressure.
C.Re-check the zero and re-adjust the zero (“Z”) pot if required.
D.Repeat steps B and C, until no further adjustment is required.
5. Use Of Peak-Hold Feature (Optional)
After initially turning the gage on (wait until the display stops flashing), a second push of the On/Off button energizes the peak-hold feature and causes an arrow to appear in the display. In this mode, only the highest reading sensed will be shown (until a higher reading comes along). This “peak” reading will be retained until the unit is reset by turning it off with a third push of the button. The sequence can then be re-initiated; one push for on in normal mode, two pushes for “peak-hold” mode and a third push for Off/Re-set.
6. Analog Output Option (0 To 2 VDC)
The 0–2 VDC analog output is accessed through a miniature “Phone Jack” (mate supplied) on the back of the unit (see External Power and 0-2 VDC Output Plug drawing on the last page). The “Tip” connection is “+ Output” and the center connection is “- Output”. DO NOT CONNECT TO THE CASE CONNECTION. This should only be used as a cable restraint. To minimize the effect on the battery life, the output should not be loaded with less than 100,000 ohms.
0 to 2 VDC Table
| | 0-2 VDC Output | |
| | |
| | | |
| Tip | + Output | |
| | | |
| Center | – Output | |
| | | |
| Body | No connection | |
| | | |
| | | |