User manual - FLOW METER SPI-638
Parameters ”
b PrEc
” and ”
b unit
” are available only if batcher counter is used to
control current output (
“SourCE”
=
”
tot
”). When current flow rate is used to
control it, the unit and precision of
”OUt LO”
and
”OUt HI”
parameters are
defined by parameters
“F unit”
,
“Ftunit”
and
“F PrEc”
of menu
”Flouu”
.
“t PrEc”
- decimal point position (displaying precision of parameters
”OUt LO”
and
”OUt HI”
)
when analogue output is controlled due to total flow counter result.
It can be set to:
“ 0“
“ 0.0“
“ 0.00“
“0.000“
Decimal point position is changed by
[^]
,
[v]
buttons.
“t unit”
- the unit of parameters
”OUt LO” and ”OUt HI”,
while analogue output is
controlled due to total flow counter result. It can be set to one of two values
:
“unit”
- units
“1000un”
- thousands of units
Parameters ”
t PrEc
” and ”
t unit
” are available only if total flow counter is used to
control current output (
“SourCE”
=
”
tot
”). When current flow rate is used to
control it, the unit and precision of
”OUt LO”
and
”OUt HI”
parameters are
defined by parameters
“F unit”
,
“Ftunit”
and
“F PrEc”
of menu
”Flouu”
.
”
Lo r
”, ”
Hi r
”
- this parameters define the output value range. If calculated output value
Out
exceeds defined range then analogue output generates signal equal to upper
or lower border of the defined range. These parameters defines the percentage
extension of nominal analogue range (with 0,1% resolution).
Parameter “
Lo r
” defines lower border of the range due to formula:
Out
min
=
A
- (
A
× “
Lo r
” %), where:
A
– lower signal value range limit.
This parameter can be set from 0 to 99.9% (for active current output and active
voltage output) or from 0 to 29.9% (for passive current output).
Parameter
“Hi r”
defines higher border of the range due to formula:
Out
max
=
B
+ (
B
× “
Hi r
” %), where:
B
– higher signal value range limit.
This parameter can be set from 0 to 19.9% (for active and passive current
output) or from 0 to 9.9% (for active voltage output).
DISPLAY VALUES CALCULATION
paragraph
the procedure of the analogue outputs determining is presented in details.
“
AL
”
- this parameter determines the behaviour of analogue output if any critical situation
occurs. According to version of the device, this parameter can be set:
For active current output:
“noCHAn”
- current will not change,
“22.1”
- current will be set to 22.1 mA,
“3.4”
- current will be set to 3.4 mA,
“0.0”
- current will be set to 0 mA.
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