User manual - FLOW METER SPI-638
If time delays between successive pulses are longer than
“mEAS t”
time, then
measurement window width is automatically fitted to input frequency.
7.3.4.
“FLouu” menu
This menu presets the measurement input and allows configuration of current flow rate
displaying mode:
“F PrEc”
-
decimal point position
(precision of flow rate displaying). It can be set to:
“ 0”
“ 0.0”
“ 0.00”
“ 0.000”
“ 0.0000”
“0.00000”
Decimal point position is changed by
[^]
,
[v]
buttons.
Change of displaying precision can require appropriate correction of relays
thresholds and hysteresis. These parameters
are not
updated automatically, due to
settings of
“F PrEc”
parameter.
“F coEF”
- conversion coefficient. Changes pulse input unit to any unit used to calculate flow
by multiplying value in
“PulSEL”
parameter by value in
“F coEF”
parameter.
Firstly, parameter editing requires to enter a value (by entering a digit in each
blinking display separately), secondly to select decimal point position (blinking dot
on selected position). There are following decimal point position options:
000000. - integer value, no decimal places,
00000.0 - one decimal place,
0000.00 - two decimal places,
000.000 - three decimal places,
00.0000 - four decimal places,
0.00000 - five decimal places,
000000
- six decimal places,
For example: 1 [ l ] = 0,264172 [US gallon ],
so
F coEF
= 264172 (no decimal places)
Decimal point position in „
Piont
” and „
F coEF
” parameters does not affect on each
other.
“F unit”
- the unit of volume used for flow rate displaying . It can be set to: (
”unit“
- units, or
“1000un”
- thousands of units). Units expressed by
“F unit”
are conventional, and
can be exchanged to any other pair of units e.g. for powders it can be
kilogram
and
tonne
, and for liquids it can be
litres
or
cubic meters
.
“Ftunit”
- time unit used for flow rate displaying. It can be set to:
(
”SEC“
- seconds,
”min”
- minutes or
“hour”
- hours).
The unit used to displaying the flow rate, depend on parameters
“F unit”
and
“Ftunit”
simultaneously, for example: L/min or m
3
/h etc.
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