KROHNE VFM 1091 I Installation And Operating Instructions Manual page 36

Diagram I
Pressure loss p for air 1.013 bar / 0
o
(14.69 psig/0 C/rn = 0.081 lbs/ft)
p (psig)
1.45
1.02
0.73
A B C D
0.44
.29
.15
.10
0.073
0.044
0.029
0.015
0.010
0.0 073
0.0044
0.0029
0.0015
1 2 3 5 7 10 2 3 5 7 100
2 3 5 7 2 3 5 7
62 1 10
Table for diagrams I + II and constantC
Curve Meter size
A DN 10 S / 3/8"S
B DN 10 / 3/8"
C DN 15 / 1/2"
D DN 20 / 3/4"
E DN 25 / 1"
F DN 40 / 1-1/2"
Signal converter VFC 091
Full-scale
Power supply U
B
Current output (term, 5/6)
Load
Ambient temperature T
B
Local display
Display functions
Display units
Actual flowrate
Totalizer
Display :
1st field (top)
2nd field (middle)
3rd field (bottom)
Mass flow measurement (off-line)
36
o o
C (32 F) / n = 1.29 kg/m3
p(mbr)
100
7
5
E F G H I J K
3
2
10
7
5
3
2
1
7
5
3
2
0.1
2 3 5 7 1000 2 3 5 7 10000
m /h 3
US GPM
2 3 5 7
2 3 5 7
10000
100 1000
Constant C
13.7
3.42
1.75
0.45
-1
1.50 x 10
-2
3.30 x 10
rangeprogrammable in litres, m3, US gallons, kgs, tonnes, lbs or standard flow rate per second minute or hour
14-36 V Dc with 100 ohms min in series
EEx (ib) 14 - 30 V DC
4 - 20 mA, DC, 2-wire
RB = U - 12 V
B
20 mA
see Diagram III
3-field LCD
actual flowrate and sum totalizer (8-digit), each programmable for continuous or sequential display
of measured parameters and error messages
Engineering units or % of full scale
3
liters, m , US gallons, kgs, tonnes, lbs or standard flow rate per second, minute or hour
3
liters, m , US gallons, kgs, tonnes, lbs, ft
8-digit, 7- segment display and sign, symbols for key acknowledgement
10 character, 14 segment text display
6 markers to identify current display
t
operating and standard density programmable
Diagram II
Pressure loss p for water 20
o
(680 F/n = 62317 lbs/ft)
p (psig)
14.50
10.15
7.25
A B C D E
4.35
2.90
1.45
1.02
0.73
0.44
0.29
0.15
0.10
0.07
0.044
0.029
0.015
0 2 3 5 7 1 2 3 5 7 10
2 3 5 7 2 3 5 7
44 1 10
Table for Diagrams I+II and constant C
Curve Meter size
G DN50 / 2"
H DN80 / 3"
I DN100 / 4"
J DN150 / 6"
K DN200 / 8"
R (ohms)
B
1200
900
14
3
o
C / rn = 998.2 kg/m3
p(mbr)
1000
7
5
F G H I J K
3
2
100
7
5
3
2
10
7
5
3
2
2 3 5 7 100 2 3 5 7 1000
3
m /h
US GPM
2 3 5 7
2 3 5 7
100 1000
Constant C
-3
7.80 x 10
-3
1.90 x 10
-4
5.30 x 10
-4
1.60 x 10
-5
5.90 x 10
U
B
18.5
30 36
(V)
EEx Standard