MODEL
EL4001
TB
1
TB
2
TB
1
TB
2
TB
3
PLS OUT3
TEMP
IN
TEMP
IN
FLOW IN
0V
＋
−
B
b
A
＋
−
＋
−
＋
−
＋
−
＋
−
SIG
SUP
SUP
ANA
OUT
GND
POWER
N
（
−
）
H（
＋
）
PRESS IN
PLS OUT1
PLS OUT2
1/1 OUT
E-886-2-E
2. GENERAL
In comparison with the previously offered instruments (OVAL EL4080 series), substantial reduction in
physical geometry, improved functions and ease of operation have been achieved. Included among the
improvements in this newly developed instrument are simplified parameter changes and data logging with
IC cards along with a large, easy-to-read LCD display.
Table 2.1
Model
Description
EL4301
This instrument receives tube oscillation signal and temperature signal from the OVAL
Coriolis flowmeter and, upon calucation, displays the density of process fluid.
It also can display the density corrected for reference temperature and provide an analog
output.
EL4311
This instrument receives mass flow signal and temperature/density signals from the OVAL
Coriolis flowmeter and, upon calucation, displays the total flow of solids content of process
fluid that contains solids.
It also can display the density corrected for reference temperature and provide an analog
output.
EL4321
EL4331
This instrument receives density frequency signal from the density sensor and provides
an analog output in proportion to the density of metered process fluid. In response to tem-
perature and pressure signals (EL4321 only), it also can provide an output corrected for
reference conditions.
2.1 Features
(1) Performs calculation of density corrected for temperature.
(2) Changing the ranges of density, temperature, pressure, or other parameters, of the companion densi-
tometer is simple by keystrokes on the front-panel keypad or by inserting an IC card into the slot.
(3) A built-in CPU offers a high degree of performance and accuracy.
(4) Variables such as temperature, pressure, and density can be reviewed on command with the front
panel keypad, whether or not computation is in progress.
(5) A nonvolatile memory (E
2
PROM) retains all parameters in the event of an AC power failure.
(6) Displays the percent concentration of solids content in the slurries and provides its analog output
(EL4301 only).
(7) Produces high and low density alarm outputs (set to desired limits) (EL4301 only).
(8) If an error occurs, its nature is identified as an error message on the display.
2.2 Part Names and Functions
Fig. 2.1 Part Names
Function Keys
Display
IC Card (option)
Shift Keys
Seal Screw
Terminal Blocks
