KROHNE IFC 110 Converter - Manual (Page 32)

Sect. 4.4 Part B IFC 110 F Signal converter
32 IFC 110 F 05/2003
4.4 Table of settable functions
Abbreviations used:
A1, A2 Status outputs P (P2) Pulse output (2nd pulse output A1)
(A1 can also be 2nd pulse output A1) P
max
= F
max
/Q
100%
C1, C2 Control inputs P
min
= F
min
/Q
100%
D1, D2 Status outputs Q Current flow rate
DN Meter size, nominal size Q
100%
100% flow rate = full-scale range
F
max
= ½ x pulse width (s) for ≤ 50 Hz
≤ 10 kHz if ”AUTO” or ”SYM.” are selected in Q
max
= /4 DN² x v
max
(= max. full-scale range
subfunction ”PULSWIDTH” Q
100%
at v
max
= 12 m/s or 40 ft/s)
F
min
= 10 pulses/h
F
M
Conversion factor volume for any unit, Q
min
= /4 DN² x v
min
(= min. full-scale range
see Fct. 3.05 ”FACT. VOL.” Q
100%
at v
min
= 0.3 m/s or 1 ft/s)
F
T
Conversion factor time for any unit, SMU Low-flow cutoff for I and P
see Fct. 3.05 ”FACT. TIME” v Flow velocity
GK Flow sensor constant v
max
Maximum flow velocity (12 m/s or 40 ft/s) at Q
100%
I Current output v
min
Minimum flow velocity (0.3 m/s or 1 ft/s) at Q
100%
I
0%
Current at 0% flow rate F/R Forward/reverse flow in F/R measuring mode
I
100%
Current at 100% flow rate
Fct. Text
Description and setting
1.0 OPERATION Operating menu
FULL SCALE Full-scale range for flow rate Q
100%
Selection of unit
• m³/h • Liter/Sec • US.Gal/min
• user unit, factory setting ”Liter/h” or ”US MGal/day” (see Fct. 3.05)
Press → key to change to numerical setting
Setting ranges
The range depends on the nominal width (DN) and the
flow velocity (v): Q
min
= DN² x v
min
Q
max
= DN² x v
max
Nominal width/meter size v
min
= 0.3 m/s (1 ft/s) v
max
= 12 m/s (40 ft/s)
● DN 2.5–1200 / 1 /
10
”–48”: 0.0053 – 48 860 m³/h
0.0237 – 218 560 US.Gal/min
● DN 1300–3000 / 52”–120” 1435 – 305 360 m³/h
(see Section 8.6) 6415 – 1 366 000 US.Gal/min
Press ↵ key to return to Fct. 1.01 FULL SCALE
→ VALUE P Pulse value for pulse output P (Fct. 1.06 ”VALUE P”) and/or
and/or for the 2nd pulse output A1 (Fct. 1.07 ”VALUE P2”) has been changed.
→ VALUE P2 With the ”old” pulse values the output frequency (F) would have
been exceeded or would not have been reached.
P
min
= F
min
/ Q
100%
P
max
= F
max
/ Q
100%
Check new values!
1.02 TIMECONST. Time constant
Selection: ● ALL (applies to display and all outputs)
● ONLY I (only display, current and status outputs)
Press ↵ key to change to numerical setting.
Range: ● 0.2 – 99.9 Sec
Press ↵ key to return to Fct. 1.02 TIMECONST.
1.03 L.F. CUTOFF Low-flow cutoff (L.F. CUTOFF)
● OFF (fixed tripping points: ON = 0.1% / OFF = 0.2%)
● PERCENT (variable tripping points) ON OFF
1 – 19% 2 – 20%
Press → key to change to numerical setting.
Note: the cutoff ”OFF” value must be greater than the cutoff ”ON” value.
Press ↵ key to return to Fct. 1.03 L.F. CUTOFF.
π
4
π
4
π
4
π
4