Yokogawa digitalYEWFLO (DY) - Manual (Page 47)

<6. PARAMETERS>
6-11
IM 01F06A00-01EN
6.4 Parameters Description
(1) Item A : Display
These items are for the indication of fl owrate and
total.
[A10:FLOW RATE(%)] Flow rate
Flowrate is displayed by “%” to span value.
[A20:FLOW RATE] Flow rate (Engineering
unit)
Flowrate is displayed by engineering unit.
[A30:TOTAL] Total value
Total value of fl owrate is displayed
Note: There will be linked to the value of B45
TOTAL RATE, it is displayed “E” shows
multipiler 10.
Example
B45 A30
10000 (= 10 4 ) 999999E4
10 (= 10 1 ) 999999E1
0.00001 9.99999
The following item should be done in case
of which Option code /MV is selected and
analog output is “Temperature”.
[A40:TEMP(%)] Temperature value
The measured temperature value is displayed by
“%” to span value of temperature.
The following item should be done in case
of which Option code /MV is selected.
[A41:TEMPERATURE] Temperature value
The measured temperature value is displayed by
engineering unit.
(2) Item B : Easy Setting
These items are for the Principal items to operate
digitalYEWFLO.
A value in “( )” is the data corresponding to indicator.
[B10:FLOW SPAN] Flowrate span
Set the required span with a numerical.
NOTE
The range of measurable fl ow velocity is as
described in Table 13.6
[B15:DAMPING] Damping time constant
Set damping time constant values from 0s to 99sec.
[B20:CONTACT OUT] Contact output
Select contact output.
Item Description
OFF (0) ------------------------
SCALED PULSE (1) Scaled pulse output: Refer to “B21”
UNSCALED PULSE (2) Unscaled pulse output: Refer to “B21”
FREQUENCY
(3) Frequency output: Refer to “B22”
ALARM (4) Alarm output: The status goes
from close to open (OFF) during
alarming.
Refer to Section 6.5 “Self-
Diagnostic (Error Code List)”.
FLOW SW (LOW:ON) (5) Status output: Refer to “B23”
FLOW SW (LOW:OFF) (6) Status output: Refer to “B23”
[B21:PULSE RATE] Pulse output rate
Set output rate in a selection of SCALED PULSE or
UNSCALED PULSE.
SCALED PULSE OUTPUT:
When SCALED PULSE is selected in B20, set
fl owrate per one pulse output. Rate unit is linking to
the fl ow unit.
UNSCALED PULSE OUTPUT:
When UNSCALED PULSE is selected in B20, it
outputs the pulse calculated by following formula.
The formula for output pulse number is as follows.
Output pulse number per one second = vortex
number per one second / PULSE RATE set
number.
Refer to Subsection 10.1.5 “Setting of Pulse Output
(Scaling)”.