<1>Outline
Smith3013 electronicmagnetic flow meter is a sensor instrument for conductive medium volume flow measurement, suitable for measuring >3us/cm conductive liquid volume flow, which
can be widely used in chemical, metallurgical, and water sources in areas such as water purification、 sewage and other conductive liquid flow measurement.
The Company produced in accordance with the electromagnetic flow meter function and form can be divided into a size、 the size of the clip-and-flange、 diving and high-voltage type EHV type.
<2> Features
1、There is no measurement of the flow resistance activities and components without pressure loss.
2、The measurement accuracy will not be affected by the liquid density、 viscosity、temperature pressure and electrical conductivity change.
3、Choosing different lining materials and electrode materials and has good corrosion resistance and wear resistance.
4、Rectangular wave excitation of low frequency 、the frequency and not clutter interference at the scene of the impact of the work is stable and reliable.
5、Will not affected by the fluid direction, the installation direction can be accurately measured
<3> Principle
Electro magnetic flow meter principle (Figure 1) is based on the law of electromagnetic induction at the end of Farah. Namely: conductive liquid in a cut in the magnetic field line movement, in the velocity vector perpendicular to the magnetic field vector and the direction will produce EMF, the EMF is:
e =Bdv where: B-intensity magnetic induction (T)
Flow: Q = 3600VF (m3/h) d-electrode spacing (m)
Then: Q = 3600 Fe (m3/h) V-average fluid velocity (m/s)
F-duct cross-sectional area (m2)
For the same flow meter, d、F、B is a fixed value, flow rate Q (or velocity V), and EMF is proportional to the size of e. Evidently, EMF e with Q the flow (or velocity V) proportional to the processing algorithms, after dealing with Operations, it is measuring instantaneous flow and cumulative flow
<4> Main technical parameters
Measuring range and accuracy（Table 1）
|
Measurement scope(m/s)
|
Accuracy
|
Flow meter
|
|
＞0.5～3
|
±0.5%、±1%
|
1：20、1：30
|
|
0.1～0.5
|
±0.003m/s 、±0.006m/s
|
1：5
|
<5>Electrode materials (Table 2)
|
Electrode materials
|
316
|
316L
|
Kazakhstan-alloy
C
|
Platinum
(Pt)
|
Titanium
(Ti)
|
Tantalum
(Ta)
|
|
Markers
|
D1
|
D2
|
D3
|
D4
|
D5
|
D6
|
<6> Nominal pressure(Table 3)
|
Nominal pressure(MPa)
|
1.0
|
1.6
|
2.5
|
4.0
|
6.3
|
10
|
15
|
25
|
|
Markers
|
S2
|
S3
|
S4
|
S5
|
S6
|
S7
|
S8
|
S9
|
<7>Lining material(Table 4)
|
Lining material
|
PU
|
Resistant rubber
|
Alumina
Ceramic
|
Fluorine plastic
|
Temperature
Synthetic rubber
|
|
Medium temperature
|
-10～80℃
|
-10～80℃
|
-40～200℃
|
-40～200℃
|
-40～150℃
|
|
Code
|
X1
|
X2
|
X3
|
X4
|
X5
|
<8>Pulse equivalent（Table 5）
|
Normal
Diameter
|
10-40 (mm)
|
50-80 (mm)
|
100-400 (mm)
|
450-1600 (mm)
|
1800-3000 (mm)
|
|
Pulse equivalent
|
0.000001
|
0.00001
|
0.0001
|
0.001
|
0.01
|
Nominal Diameter: 10~3000 mm
Accuracy: 0.5% 、 1%
Ambient temperature: -30 ~ +65℃
Medium temperature: - 10 ~ +80℃
Supply voltage: 220 VAC 24VDC
Power data protection: 10 years
Pipeline Connection: GB/T9118-2000 (China flange standards); NIST (USA standard flange)
Scene Show: pulse、 4 ~ 20mA、 1 ~ 5V、4 ~ 20mA + HART support RS232, RS485 communications (optional)
Ex Level: ExdⅡ ExiaⅡCT5
Protection Level: IP65, IP67, IP68
Alarm flow limit (Opto-coupler output)
Alarm minimum flow (Opto-coupler output)
Function with setting parameter
<9>The performance of electrode material and the proposed scope of application
|
316
|
316L
|
Kazakhstan-
alloyC
|
Platinum
(Pt)
|
Titanium(Ti)
|
Tantalum
(Ta)
|
|
For nitrate at room temperature, under dilute sulfuric acid, boiling phosphoric acid, lye, acetic acid, sea water, urea, Vinylon, etc.
|
For nitrate at room temperature, under dilute sulfuric acid, boiling phosphoric acid, lye, acetic acid, sea water, urea, vinylon and better performance than 316
|
Suitable oxidizing acid or acid mixture, salt, hypochlorite, water, etc.
|
Suitable for all kinds of acid, alkali and salt, but impatient with aqua regia, etc.
|
Suitable for water, all kinds of chloride, acid oxidation, organic acids such as
|
And the glass is similar in nature, most chemical-resistant media corrosion, but hydrofluoric acid, oleum found to be ineffective
|
<10>Common Flow rate
|
|
0.1
|
1
|
2
|
3
|
4
|
5
|
12
|
|
10
|
0.028
|
0.2827
|
0.5655
|
0.8482
|
1.1310
|
1.4137
|
2.827
|
|
15
|
0.064
|
0.6362
|
1.2723
|
1.9085
|
2.5447
|
3.1809
|
6.362
|
|
20
|
0.113
|
1.1310
|
2.2619
|
3.3929
|
4.5239
|
5.6549
|
11.310
|
|
25
|
0.177
|
1.7671
|
3.5343
|
5.3014
|
7.0686
|
8.8357
|
17.671
|
|
40
|
0.452
|
4.5239
|
9.0478
|
|
