E--883--4N--E
2. GENERAL
Using the most advanced electronic tehcnologies, this digital instrument has been developed specifically
to meet the most demanding liquid flow measurement applications where accuracy is the prime
requirement.
In response to the liquid flowrate and temperature information arriving from the sensing terminal, such as
a flowmeter, it totalizes the flow while implementing meter error and temperature corrections.
An analog output and instant flowrate (corrected for meter error and temperature) output are additional
provisions.
2.1 Features
(1) Changing the meter factor, ranges of temperature, pressure, or other parameters, of the companion
flowmeter is simple by keystrokes on the front-panel keypad, or by inserting an IC card into the slot.
(2) Built around a microprocessor, the instrument carries out calculations entirely in digital signal
processing circuits to achieve a high degree of accuracy and reliability.
(3) Variables, such as temperature and pressure, can be reviewed on command with the front panel
keypad, whether or not calculation is in progress.
(4) A nonvolatile memory (E
2
PROM) retains all parameters and variables. Variables are resettable
following a power cycle or reset if so configured.
2.2 Part Names and Functions
MODEL
EL4001
TB
1
TB
2
TB
1
TB
2
TB
3
PLS OUT
3
TEMP
IN
TEMP
IN
FLOW IN
0V
＋
−
B
b
A
＋
−
＋
−
＋
−
＋
−
＋
−
SIG
SUP
SU
P
ANA
OUT
GND
POWE
R
N
（
−
）
H
（
＋
）
PRESS IN
PLS OUT
1
PLS OUT
2
1/
1
OUT
Fig. 2.1 Part Names
Function Keys
Display
IC Card
Shift Keys
Seal Screw
Terminal Blocks
