DewPro MMY245
Installation and Operation Manual
GE General Eastern
14
Note: To assist in setting a value in a cell, the cursor (flashing digit to be altered) can be moved from the
digit to digit, right to left, by pressing the
V
and
H
button simultaneously.
Cell Function
V0 H0
Displays moisture unit selected in
V0 H1
V0 H1
Entering a number from 0 to 8 selects desired moisture unit displayed in
V0 H0
(see table location
V0 H1
on the matrix illustration). Note: Selecting 7 or 8 displays
the pressure dew point in
V0 H0
as a function of the pressure value entered in
V3
H1
. Example: The process pressure is 100 bar and is to be measured by reducing the
gas sample to the MMY 245 to atmospheric pressure. If the pressure dew point
temperature is desired, entering 100 bar in
V3 H1
the dew point for 100 bar is
calculated and displayed in
V0 H0
or
V4 H0
(second unit of measure) if selected
from table location
V4 H1
(see matrix illustration).
If a concentration unit, i.e. 2 = ppm
v
, 3 = lbs/MMSCF, 4 = g/m
3
is selected, inlet
pressure can be compensated for up to 10 bar. The actual sample pressure must be
entered in bar(a) in
V3 H0
. This pressure value covers process pressures up to 10
bar(g) that can be connected directly to the MMY 245 system (10 bar(g) maximum).
Dynamic pressure compensation can be accomplished if the optional pressure sensor
is installed (10 barg max.).
V0 H2
Displays the lowest moisture value measured since the unit was reset using
V0 H4
,
new batteries were installed, system reset performed using
V9 H9
, or unit of
measure selection is changed.
V0 H3
Displays the highest moisture value measured since the unit was reset using
V0 H4
,
new batteries were installed, system reset performed using
V9 H9
, or unit of
measure selection is changed.
V0 H4
Resets the event memories of
V0 H2
and
V0 H3
by pressing the + button
V0 H7
Fault status for output 1 is selected with 0 setting the output to -0.1 V, 1 setting the
output to 5.1 V and 2 holding the output to the last measured value with the
occurrence of a memory or output error.
V0 H8
Displays the raw digital value corresponding to the moisture content, and can be
verified using the calibration table supplied with the instrument. This value is equal
to the “counts”/10 as illustrated on the calibration data sheet furnished with the
instrument.
V1 H0-
9
and
V2
H0-7
Scaling the moisture output. The low moisture value is assigned to 0 V, the high
moisture value is assigned to 5 V.
V3 H0
A pressure value between 0.01 and 99.99 bar can be entered correcting concentration
units (see explanation under
V0 H1
).
V3 H1
A pressure value from 0.1 to 999.9 bar can be entered to calculate the process
pressure dew point (see explanation under
V0 H1
).
V3 H7
Enables output 1 by entering a digit other than 0, disables the output 1 by entering a
0.
V4 H0
Displays the second unit of measure that normally would be the temperature.
However, any other unit (see table location
V4 H1
on the matrix illustration) can be
assigned to this matrix field choosing a number from 0 to 14 in
V4 H1
.
V4 H1
Selects the second unit of measure displayed in
V4 H0
from the table in location
V4
H1
on the matrix illustration.
