Omega Engineering DPG10L - Manual (Page 8)

3.5 The alarm set point indicator segment of the bar graph will “blink” when
that set point is activated. The hookup of optional outputs is covered later
in this manual
4.0 Zero Trimming
4.1
Should it be necessary to readjust the Zero setting, an adjustment has
been provided. Prior to adjusting the zero, verify that you are displaying
the “gross” zero reading by performing step 1.3. On the back of the case,
in the upper left, there are two cover screws labeled “Z” and “S”. Remove
the screw covering the “Z” and utilizing a jewelers screwdriver, turn the
small screw to re-zero the unit. The ideal zero is indicated by a reading of
0000 with an intermittently flashing “-” sign.
. NOTE:.Do.not.readjust.the.“S”.as.this.will.invalidate.the.factory.
calibration.
5.0 Re-calibration
This procedure requires a known pressure source of at least ± 0.1% accuracy
in order to fully utilize the potential of the DPG10L (If not available, the gauge
may be returned to OMEGA for re-certification)
5.1
With 0 psig applied (port vented) adjust zero per instructions of 4.0.
5.2 Apply full scale pressure to the pressure port and adjust the “S” until the
display reads the correct pressure.
5.3 Re-check zero and re-adjust the zero if required.
5.4 Repeat steps 5.2 and 5.3 until no further adjustment is required.
6.0 Battery Replacement
6.1 To access the battery, the unit must be partially disassembled. Remove
the thread ring surrounding the lens by turning counter clockwise. Carefully
turn the unit face down with one hand prepared to “catch” the lens and
display board as they fall from the housing. Do not allow the display board
to fall more than an inch or two as there are wires connecting it to the main
housing.
6.2 Disconnect the two wire connector that leads from the batteries to the
electronic. Then remove the battery or batteries from the holder(s) and
replace with the same type that was removed, taking care to observe the
correct polarity. Re-connect the battery connector.
DPG10L M3367/0606
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