EPCCalibration:
I.With thegas
off connect
a0 - 30 psi gauge to the uniononthe output
ofthe
EPe.
(Inside the instrument, the
El'C's
are onthe left)
2. Adjust the EPe SET POINTon the top ofthe front panel to 20 psi. Verify the SET
POINT is at 20 psi with thepushburtons.
3.Withthe supply gasoff,Zerothedisplay toasettingof-0.0using theOFFSETPOT
adjustment on the
EPe
board
shown
below.
4.With a supplypressure of 30psi tumonthesupply gas.
5.Adjust the SPAN POTon the EPe board tomake the gauge pressure equal to the SET
POINTpressure.
6. Repeat steps 3-5, until the ZERO is -0.0 and the gauge and display both read 20 psi.
OFFSET
1 ~
',1.
~
SPAN
._ ~ tl-
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.
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....
,
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