E-122-8-E
10
7. FUNCTIONS AND OPERATION
The counter is designed to show the following
variables on the display using "MODE" and "RESET"
pushbuttons.
7.1 LCD Counter Display
Upon each depression of "MODE" button, the LCD
display scrolls through available variables as shown
Only incoming pulses having small periodic
variation produce meaningful readins.
(See section 7.3.)
RESET button is operative only in this mode.
The counter resets to zero upon "RESET"
button depression.
7.2 About the Displayed Messages during Operation
(1) Ordinary operation
"MODE" switch is turned "ON"
⇒
8 bars appear.
⇒
Immediately turning "OFF" scrolls the window
to the next one.
⇒
Holding turned ON until the last bar disappears results
in "prolonged depression" processing (Turning OFF
before the last bar disappears results in the same
behavior as in
①
to take place.)
※ Prolonged operation: An operation required for Normal
mode
⇔
Parameter review mode selection, finalizing
the parameter setting, etc.
Indicates a countdown before "prolonged depression"
processing takes place.
(2) Prolonged operation
"MODE" switch is held turned ON without turning
"OFF" immediately by removing the fingers.
⇒
Bars begin to disappear from the leftmost one.
7.3 Total Flow and Instantaneous Flowrate Calculation and About Factored Pulse Output
(1) Total flow
Each time a single pulse (after frequency division by hardware means) arrives at the CPU, "Parameter
F×Parameter H" is added up to the current reading of total flow.
●
The LCD shows a reading down to the decimal places set at "Parameter SP" menu.
●
When the reading has reached its maximum reading (99999999), the reading returns to zero.
(2) Factored pulse output
Produces a pulse output to read in the unit set at "Parameter Pu" menu.
"ALARM2"
LED
"ALARM1"
LED
"MODE" button
Fig.7.1
"RESET" button
When the RESET switch is pressed in a mode where the RESET switch is valid, the display
behaves the same as described above. (There is no distinction between ordinary operation and
prolonged operation, however.)
Accumulated total flow
Display
Instant.
flowrate
/h
/min
Instant.
flowrate
Resettable total flow
Mode code
Indicates that the switch is turned "ON."
Freq. division
Hardware
1/1 or 1/10 or 1/100
Incoming pulses
CPU
(F
×
H)
Pu
LCD display
Factored pulse output
C
0
