PN 903-8797, Rev A
2. Perform the Zero (I1Z) and Span (I1S) calibrations for the external water
dewpoint V/I. See “Current Output Zero/Span Calibration” in Chapter 3 for
more information about calibrating these output ranges.
3. Change the analyzer’s Low V/I WDP range (I1L) or WCT (I3L) to match the
value entered for the ExLo value.
Change the analyzer’s High V/I WDP range (I1H) or WCT (I3H) to match the
value entered for the ExHi value.
4. After all of the parameters have been programmed, begin calibrating the
analyzer. To do this:
a. Connect a 4–20 mA power source, or the external water signal, to the
spare analog input Terminals 12+ and 13- on connector J101 on the
Termination board in the Electronics Enclosure.
Before you can view the WDP or WCT readings discussed in Steps 4 -b
and 4-c, you must select the appropriate option (either H2O DP:EXT
or H2O CT:EXT) from the Water Measurement Option sub-menu of
the MonitorCFG menu.
b. Simulate the low range with a 4 mA signal (or the external water signal)
to the analyzer.
From the RUN menu, view the external water dewpoint (WDP) or external
water content (WCT) reading. Press to refresh the reading by scrolling
through the readings until the WDP or WCT reading is displayed again.
Record this value for future reference.
c. Simulate the high range with a 20 mA signal (or the external water signal)
to the analyzer.
From the RUN menu, view the external water dewpoint (WDP) or external
water content (WCT) reading. Press to refresh the reading by scrolling
through the readings until the WDP or WCT reading is displayed again.
Record this value for future reference.
RUN Mode
MonitorCFGI1Z (or I1S)
RUN Mode
ApplicCFGI1L (or I3L, I1H,
I3H)
A-4 | 241CE II Hydrocarbon Dewpoint Analyzer
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