Greyline Portaflow PT400, Руководство пользователя

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To calculate the flow rate (l/min) for a measured current I(mA) then:
0-20mA
Flow rate
I F
max
F
min
–
  
20
------------------------------------------- F
min
+ =
0-16mA
Flow rate
I F
max
F
min
–
  
16
------------------------------------------- F
min
+ =
4-20mA
Flow rate
I 4 –
 
F
max
F
min
–
  
16
 
--------------------------------------------------------- F
min
+ =
3.7.6 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 screen.
2. A Pulse output is ON message appears in the
second line of the display.
3. Select Exit and press ENTER to return to the
FLOW READING screen.
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
3.7.7 Pulse output signal calibration
1. With the instrument operating in the FLOW
READING mode, press the Pulse function key to
access the PULSE OUTPUT screen.
2. To change the flow measurement units select
Flow units and press the required units function
key (7), (8), (9).
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
3.7.7
3. Select Vol per pulse and enter the required value. (In the example shown, a pulse is produced
every 10 litres of flow).
4. 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.
5. Select Exit and press ENTER to return to the FLOW READING screen.
4 8 12 16 20
F
max
F
lo
w
(l
/m
in
)
I
(mA)
F
min
[0-16mA scale]
[0-20mA scale]
[4-20mA scale]