E-886-2-E
1
6.1.4 Display Items
The units of measure vary with instrument programming. You select the units of measure in the SET
mode.
NOTE: For complete details, see the Key Operation Manual.
The information displayed (menu items) by model are described below (Tables 6.1 through 6.4).
Table 6.1 EL4301 Display Items
Display Item
Description
Density Before Correction
(DENSITY)
Calculates density from density periods of the flowmeter and displays it.
Corrected Density
(DENSITY(C))
Calculates density at reference temperature using the thermal expansion coefficient of
the fluid and displays it. If it exceeds preset high or low limit, its default fallback value is
shown.
Temperature
(TEMPERATURE)
Displays surface temperature of flowmeter sensor tubes.
In most cases it remains the same as that of the fluid. But if ambient temperature differs
noticeably from fluid temperature, it may not agree with fluid temperature.
Density Period
(DENSITY PERIOD)
Displays oscillating period of flowmeter sensor tubes which varies with fluid density. If
the period exceeds 25 ms, "99999.999" is shown.
Weight Concentration of Solid
(%MASS)
Displays concentration of solids in slurries in terms of weight, based on corrected
density. Some liquids in which solids dissolve may result in inaccurate readings. Take
aqueous solution of caustic soda and sugared water, for example. They change volume
as they dissolve and may possibly result in inaccurate concentration readings.
Table 6.2 EL4311 Display Items
Display Item
Description
Density Before Correction
(DENSITY)
Calculates density from oscillation periods of flowmeter tubes and displays it.
Corrected Density
(DENSITY(C))
Calculates density at reference temperature using the thermal expansion coefficient of
the fluid and displays it. If it exceeds preset high or low limit, its default fallback value is
shown.
Total Mass Flowrate
(TOTAL COUNT)
Displays mass flow corrected for meter error.
Total Mass Flow of Solid
Content
(TOTAL COUNT(SOLID))
Calculates concentration of solids in slurries in terms of weight, based on density before
correction and, taking the obtained result into account, displays total flow of solids
content.
Instant Mass Flowrate
(FLOW RATE)
Displays instant mass flowrate, based on the mass flowrate corrected for meter error.
Instant Mass Flow of Solid
Content
(FLOW RATE(SOLID))
Calculates concentration of solids in slurries in terms of weight, based on density before
correction and, taking the obtained result into account, displays instant flowrate of
solids content.
Temperature
(TEMPERATURE)
Displays surface temperature of flowmeter sensor tubes.
In most cases it remains the same as that of the fluid. But if ambient temperature differs
noticeably from fluid temperature, it may not agree with fluid temperature.
Density Period
(DENSITY PERIOD)
Displays oscillating period of flowmeter sensor tubes which varies with fluid density. If
the period exceeds 25 ms, "99999.999" is shown.
Meter Error Correction
Factor
(METER ERROR)
Displays meter error correction factor relative to the flowrate information currently
coming in from the flowmeter. Based on this reading, mass total and instant mass flow-
rate are corrected for meter error.
E
[Reading] = 1
＋
100
Proportion of Solids Content
(SOLID RATIO)
Displays proportion of solids content, based on current line temperature, density before
correction, and correction factor of the quadratic function of temperature and density.
(See "Total Flow of Solids Content" in Sec. 7.)
Based on the reading so obtained, total flow of solids content and instant flowrate of
solids content are calculated.
[Reading] = (P
a
+ P
b
・
D
x
+ P
c
・
D
x
2
)
・
(T
a
+ T
b
・
t
x
+ T
c
・
t
x
2
)
where t
x
: Line temperature Dx: Density before correction
P
a
thru P
c
, T
a
thru T
c
: Correction factors
