User manual - FLOW METER SPI-638
“b unit”
- the unit of volume used for batcher counter displaying . It can be set to: (
”unit.“
-
units, or
“1000un”
- thousands of user units). Units expressed by
“b unit”
are
conventional, and can be exchanged to any other pair of units e.g. for powders it
can be
kilogram
and
tonne
, for liquids it can be
litre
or
cubic meter
.
“CLrbAt”
- this option allows zeroing of batcher counter. After selection of this option ask
“CLEAr?”
is displayed. If user press
[ENTER]
batcher counter is cleared, else
action is cancelled.
Zeroing of
batcher counter
is possible via RS-485 interface too. It can be done as
write of 0000h to any one of registers referred to
batcher counter
(0Dh ÷ 0Fh)
using RS 485 interface.
To protect batcher counter of unauthorised zeroing, it is recommended to set
password to menu access (see menu
“SECU”
).
“E Clr”
- this parameter allows selection of active level/edge of batcher counter zeroing
input (see Figure 4.13). After zeroing next batching cycle starts. It can be set to one
of following:
“oFF”
- input disabled,
“HI”
- zeroing while high level on the input and start batching if low level on
the input appears,
“LO”
- zeroing while low level on the input and start batching if high level on
the input appears,
“LO-HI”
- zeroing and start batching while rising edge on the input,
“HI-LO”
- zeroing and start batching while falling edge on the input.
For settings “zeroing while high/low level” the selected level must be longer than 5ms.
“m CLr”
- this parameter allows to activate manual zeroing of
batcher counter
using
button:
”oFF”
- manual zeroing disabled,
”on”
- manual zeroing enabled.
“A rES”
- this parameter allows to activate autoreset function (automatic
batcher counter
zeroing and start next batching):
”oFF”
- autoreset disabled,
”on”
- autoreset enabled.
“Atunit”
- time unit of autoreset delay:
”SEC“
- seconds,
”min”
- minutes.
“A dLy”
- autoreset delay - it defines delay between last finished batching and execution of
batcher autoreset function. Parameter
“A dLy”
is expressed with precision 0.1 of
sec. or minutes depend on
“Atunit”
parameter.
Due to delays during valves closing, too small value of
“A dLy ”
can cause counting
error while next batching cycle. It is recommended to set parameter
“A dLy ”
as
much as valve closing time (or more), to preserve complete close of valves before
start of next batching cycle.
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