Electro magnetic Flow Meter - KFL-GC-50-1.6

KFL-DC Series Electro magnetic flow meter
1. Introduction
KFL-DC series electromagnetic flowmeters follow the Faraday law of electromagnetic induction. They can be used to
accurately measure the flowrate of liquids which are electrical conducting, caustic, and mixed with liquids and solids.
They are widely used throughout industries of petroleum, chemical engineering, pharmacology, papermaking, electric
power, environmental protection and so forth. Their antiknock level is ExdIIBT4.
2. Structure
KFL-DC series electromagnetic flowmeters are made up of sensor and transducer, together with LCD screen, current
and pulse output, alarm signal and RS-485 communication.
3. Special Features
zero pressure losing;
Corrosion protection, abrasion resistant;
High accuracy, Stable performance, high level of anti-vibration and anti-jamming, wide measuring dimensions.
4. Using Conditions
Ambient temperature: -10~60;
Relative humidity: ≤85%RH;
Atmospheric pressure: 86KPa~106KPa;
Applicable Fluid: electrically conducting liquid;
Fluid temperature:-25~ +65 and -25~ +140;
Electrical conductivity: 5us/cm.
5. Technical Parameters
Size: DN10~DN500;
Standard pressure: PN1.0MPa~40MPa;
Accuracy: ±0.5%~±1.0%;
Supply power: 85 to 250VAC (45 to 63Hz), 16 to 36VDC;
Signal output: Current Output: 0~10mA or 4~20mA;
Frequency Output: 0~5000Hz with photoelectric isolation;
Pulse Output: 0.001~1.000m3/cp, 0.001~1.000 Ltr/cp, 0.001~1.000USG/cp,
0.001~1.000 UKG/cp;
Alarm Output: Upper Alarm-ALMH, Lower Alarm-ALML with photoelectric isolation;
Communications: RS-232 without galvanic isolation, RS-485 with Galvanic isolation,
MODBUS.
Flow Ranges and Meter Sizes
Meter Size
Min. Flow Range
Flow Velocity
Max. Flow Range
Flow Velocity
DN 0 to 0.5 m/s 0 to 1.64 ft/s 0 to 10 m/s 0 to 32.81 ft/s
mm Inch l/min, m3/h gpm l/min, m3/h gpm
10
15
20
3/8
1/2
3/4
0 to 2 l/min
0 to 5 l/min
0 to 7.5 l/min
0 to 0.52
0 to 1.32
0 to 1.98
0 to 40 l/min
0 to 100 l/min
0 to 150 l/min
0 to 11.88
0 to 26.41
0 to 39.62
25
32
40
1
1 1/4
1 1/2
0 to 10 l/min
0 to 20 l/min
0 to 30 l/min
0 to 2.64
0 to 5.28
0 to 7.92
0 to 200 l/min
0 to 400 l/min
0 to 600 l/min
0 to 52.83
0 to 105.66
0 to 158.50
50
65
80
2
2 1/2
3
0 to 3 m3/h
0 to 6 m3/h
0 to 9 m3/h
0 to 13
0 to 26
0 to 39
0 to 60 m3/h
0 to 120 m3/h
0 to 180 m3/h
0 to 264
0 to 528
0 to 792
100
125
150
4
5
6
0 to 12 m3/h
0 to 21 m3/h
0 to 30 m3/h
0 to 52
0 to 92
0 to 132
0 to 240 m3/h
0 to 420 m3/h
0 to 600 m3/h
0 to 1056
0 to 1849
0 to 2641
200
250
300
8
10
12
0 to 54 m3/h
0 to 90 m3/h
0 to 120 m3/h
0 to 237
0 to 396
0 to 528
0 to 1080 m3/h
0 to 1800 m3/h
0 to 2400 m3/h
0 to 4755
0 to 7925
0 to 10566
350
400
450
14
16
18
0 to 165 m3/h
0 to 225 m3/h
0 to 300 m3/h
0 to 726
0 to 990
0 to 1320
0 to 3300 m3/h
0 to 4500 m3/h
0 to 6000 m3/h
0 to 14529
0 to 19812
0 to 26417
500
600
700
20
24
28
0 to 330 m3/h
0 to 480 m3/h
0 to 660 m3/h
0 to 1452
0 to 2113
0 to 2905
0 to 6600 m3/h
0 to 9600 m3/h
0 to 13200 m3/h
0 to 29058
0 to 42267
0 to 59117
800
900
1000
32
36
40
0 to 900 m3/h
0 to 1200 m3/h
0 to 1350 m3/h
0 to 3962
0 to 5283
0 to 5943
0 to 18000 m3/h
0 to 24000 m3/h
0 to 27000 m3/h
0 to 79251
0 to 105668
0 to 118877
Table 1: Flow Range
Flowrate Nomograph
Fig. 1: Flowrate Nomograph DN 1 to DN 100[1/25 to 4] Fig. 2: Flowrate Nomograph
DN 125 to DN 1000 [5 to 40]
Flowrate Nomographs The volume flowrate is a function of the flow velocity and the flowme-ter size. The Flowrate
Nomographs, Fig. 14: and Fig. 15: indicate the flowrate range for a specific flowmeter size and which flowmeter sizes
are suitable for a specific flowrate.
Example: Flowrate = 7 m3/h [30.82 gpm] (Maximum value = range end value). Suitable are flowmeter sizes DN 20 to
DN 65 [3/4 to 2-/12] for a flow velocity between 0.5 and 10 m/s [1.64 and 32.81 ft/s].
6. Analog Output Effects
Same as pulse output plus ±0.1% of rate ±0.01mA