Installation and operating instructions
IFC 020
5/1
5 Description of functions
5.1 Full-scale range Q
100%
π
4
π
4
Fct. 1.01 FULL SCALE
Press
→
key.
Choice of unit for full-scale range Q
100%
• m3/hr
(cubic metres per hour)
• Liter/Sec
(litres per second)
• US.Gal/min
(US gallons per minute)
•
User-defined unit, factory-set is
„Liter/hr“
(litres per hour) or
“US MGal/day”,
see Sect. 5.12.
Select with
↑
or
↓
key.
Use
→
key to transfer to numerical setting, 1st number (cursor) flashes.
Set full-scale range Q
100%
The setting range is dependent on meter size (DN) and flow velocity (v).
Q
min
= DN
2
x v
min
Q
max
= DN
2
x v
max
(refer to flow table in Sect. 10.1)
0.0053
– 33 929
m
3
/hr
0.00147 –
9 424.5
Liter/Sec
0.00233 – 151 778
US.Gal/min
Change flashing number (cursor) with
↑
or
↓
key.
Use
→
key to shift cursor 1 place to right.
Press
↵
key to return to Fct. 1.01 FULL SCALE
.
Note
if
“VALUE P”
is displayed after pressing
↵
key:
PULSE/VOL. is set under Fct. 1.06 PULS B1, subfunction “SELECT P”. Due to the changed
full-scale range Q
100%
, the output frequency (F) of the pulse output will be over- or undershot:
P
min
= F
min
/ Q
100%
P
max
= F
max
/ Q
100%
Change pulse value accordingly, see Sect. 5.7 pulse output P, Fct. 1.06.
5.2 Time constant
Fct. 1.02 TIMECONST.
Press
→
key.
Choice
• ALL
(applies to display and all outputs)
• ONLY I+S
(applies only to display, current and status output)
Select with
↑
or
↓
key.
.
Transfer to number setting with
↵
key. 1st number (cursor) flashes.
Set numerical value
• 0.2 - 99.9 Sec
(seconds)
Change flashing number (cursor) with the
↑
or
↓
key.
Use
→
key to shift cursor 1 place to right.
Press
↵
key to return to Fct. 1.02 TIMECONST.
