The electromagnetic flowmeter of Anhui Tiankang Group consists of two main parts: electromagnetic flow sensor and electromagnetic flow converter.
Anhui Tiankang Group Electromagnetic Flow MeterThe measurement principle is based on Faraday's law of electromagnetic induction. The main components of the sensor are the measuring tube, electrode, excitation coil, iron core and yoke, and housing. The measuring tube of the sensor is a non-magnetic alloy short tube lined with insulating material, with a diameter of D. Two electrodes are fixed on the measuring tube through the tube wall along the diameter direction, and their electrode heads are basically flush with the inner surface of the lining. When the excitation coil is excited by bidirectional square wave pulses, a working magnetic field with a magnetic flux density of B is generated in the direction perpendicular to the axis of the measuring tube. At this point, if a fluid with a certain conductivity flows through the measuring tube at an average flow velocity V, the cutting magnetic field lines will induce an electromotive force E. The electromotive force E is proportional to the product of the magnetic flux density B, the inner diameter D of the measuring tube, and the average flow velocity V, that is, E ∝ BVD. The electromotive force E (flow signal) is detected by the electrode and sent to the converter through a cable. The converter amplifies and processes the flow signal to display the flow rate and total amount, and can output signals such as pulses and analog currents. The converter of LDG type electromagnetic flowmeter is an intelligent instrument with Chinese character LCD display. |
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| execution standard |
JB/T9248-1999 |
| Nominal Diameter |
3. 6, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500
600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000, 2200, 2400, 2600, 2800, 3000 |
| high flow rate |
15m/s |
| accuracy |
± 0.5% of the indicated value (flow rate 0.8m/s); ± 4mm/s (flow velocity<0.8m/s) |
| Fluid conductivity |
≥5uS/cm， |
| Nominal Pressure |
1.6 MPa |
1.6 MPa |
1.0 MPa |
0.6 MPa |
6.3, 10 MPa, etc |
| DN3～DN150 |
DN15～DN600 |
DN200～DN1000 |
DN700～DN3000 |
Special Orders |
| lining material |
Polytetrafluoroethylene, chloroprene rubber, polyurethane, perfluoroalkoxy (F46), mesh PFA, PO |
| ambient temperature |
sensor |
-25℃～+60℃ |
| Converter and integrated model |
-10℃～+60℃ |
| High fluid temperature |
Integrated type |
70℃ |
| separated type |
Polychloroprene rubber lining |
80℃; 120 ℃ (specify when ordering) |
| Polyurethane lining |
80℃ |
| PTFE lining |
100℃; 150 ℃ (specify when ordering) |
| Perfluoroethylene propylene (F46) |
| Mesh PFA |
Signal electrodes and
Grounding electrode material |
Stainless steel 0Cr18Ni12Mo2Ti, Hastelloy C, Hastelloy B, titanium, tantalum, platinum/iridium alloy, stainless steel coated with tungsten carbide |
| Electrode scraper mechanism |
DN80～DN3000 |
| Connecting flange material |
carbon steel |
| Connecting ring material |
Stainless steel 1Cr18Ni9Ti |
| enclosure protection |
ND15-DN3000 separated rubber or polyurethane lined sensor |
IP65 or IP68 |
| Integrated type (circular converter) |
IP67 |
| Other sensors and separate converters |
IP65 |
Explosion proof instrument
Explosion proof mark |
Ex deiaⅡCT4 |
IP65、DN15～DN600 |
| Distance (separated type) |
The standard length provided by the separated cable manufacturer is 10m, and the distance between the converter and the sensor is generally not more than 100m. If it exceeds 100m, special orders are required |
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a. Connection form |
e. Electrode material |
A flange connection
B clamping type |
Stainless steel 0Cr18Ni12Mo2Ti
2 哈氏合金B
3 Hastelloy C
4 Titanium
5 Platinum/Iridium Alloy
6 Tantalum |
b.公称通径(mm) |
| encoding |
path |
encoding |
path |
encoding |
path |
| 015 |
15 |
250 |
250 |
10A |
1000 |
| 020 |
20 |
300 |
300 |
12A |
1200 |
| 025 |
25 |
350 |
350 |
14A |
1400 |
| 040 |
40 |
400 |
400 |
16A |
1600 |
| 050 |
50 |
450 |
450 |
18A |
1800 |
| 065 |
65 |
500 |
500 |
20A |
2000 |
| 100 |
100 |
600 |
600 |
22A |
2200 |
| 150 |
150 |
700 |
700 |
24A |
2400 |
| 200 |
200 |
800 |
800 |
26A |
2600 |
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900 |
900 |
28A |
2800 |
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30A |
3000 |
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f. Shell protection |
1 IP65
2 IP68+IP65 (with sensor IP68+converter IP65) (D code only available for 2, 3
4. 6; G code can only select 0; I-code can only select CR; K-code can only select 01-02)
3 IP67 (g code can only choose 0; I-code can only select CH; k-code can only select 03) |
g. Explosion proof mark |
0 None
Explosion proof, choose 1 for F-code and 02 or 03 for K-code; |
h. Attachment |
0 None
1. Grounding electrode (DN25~DN3000)
2 grounding rings (DN15~DN3000)
3-electrode scraper mechanism (DN80~DN3000) |
c. Nominal pressure (MPa) |
| 06 |
0.6 |
(DN700～DN3000) |
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| 10 |
1.0 |
(DN15～DN1000) |
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| 16 |
1.6 |
(DN15～DN600) |
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| 40 |
4.0 |
(DN15～DN150) |
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| Xx special order |
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i. Structure |
CR separation type
CH integrated type |
j. Power supply |
1 85～265V AC 45～400Hz
2 16～40V DC |
d. Lining material |
1. Polytetrafluoroethylene (F4) (DN15~DN1000) (not suitable for negative pressure)
2 Polychloroprene rubber (DN50-DN3000)
3 Polyurethane (DN15~DN600)
4. Perfluoroethylene propylene (F46) (DN10~DN250) (DN65 and above are suitable for negative pressure)
5 PFA (DN10~DN250) (DN65 and above are suitable for negative pressure)
6 PO (DN50～DN400) |
k. Converter type |
01 square separation type, single current, dual pulse, dual alarm
02 Circular Separation Type, Single Current, Single Pulse, Dual Alarm
03 Circular Integrated Type, Single Current, Single Pulse, Dual Alarm
04 square integrated type, single current, dual pulse, dual alarm
Note: 1. Communication protocol: RS232, RS485, HART optional
2. Batch control function is optional
3. GPRS remote monitoring function is optional |
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