3: Operating Procedures
26
U3000/U4000 User Manual
(Issue 2.0)
To calculate the flow rate (l/min) for a measured current I(mA) then:
3.4.2 Pulse
output
Pulse output configuration
Two parameters can be configured from the
PULSE OUTPUT
menu:
•
Volume of fluid per pulse.
•
Pulse width.
1.
With the instrument operating in the
FLOW
READING
mode, press the
Pulse
function
key to access the
PULSE OUTPUT
screen.
2.
Ensure that the
Output
is
Off
.
3.
Select
Vol per pulse
and press
ENTER
.
4.
Enter the required value. (In the example
shown, a pulse is produced every 10 litres
of flow).
Note: The
Vol per pulse
can only be changed if the
Pulse Output
is
Off
.
5.
Select a Pulse width (in ms) to suit the particular application – e.g. electro-mechanical counter. Refer to
the manufacturer’s data sheet for the minimum pulse width.
6.
Select
Exit
and press
ENTER
to return to the
FLOW READING
screen.
How to turn the pulse output OFF/ON
1.
With the instrument operating in the
FLOW
READING
mode, press the
Pulse
function
key to access the
PULSE OUTPUT
menu.
2.
Select
Output
and press
ENTER
.
3.
Select
On
and press
ENTER
.
4.
A
Pulse output is ON
message will appear
in the second line of the display.
5.
Select
Exit
and press
ENTER
to return to
the
FLOW READING
screen.
0-20mA
0-16mA
4-20mA
Flow rate
I
F
max
F
min
–
(
)
×
20
-------------------------------------------
F
min
+
=
Flow rate
I
F
max
F
min
–
(
)
×
16
-------------------------------------------
F
min
+
=
Flow rate
I
4
–
(
)
F
max
F
min
–
(
)
×
16
( )
---------------------------------------------------------
F
min
+
=
PULSE OUTPUT
DD-MM-YY HH:MM:SS
Pulse output is ON
Dim: mm
Flow units : litres
Output : Off
Vol per pulse : 10.00
Pulse width (ms) : 10
Exit
PULSE OUTPUT
DD-MM-YY HH:MM:SS
Pulse output is ON
Dim: mm
Flow units : litres
Output : Off
Vol per pulse : 10.00
Pulse width (ms) : 10
Exit
