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Intelligent remote transmission electromagnetic flowmeter, wireless intelligent GPRS meter reading
Working principle: SP-LDE series intelligent remote electromagnetic flowmeter, wireless intelligent GPRS meter reading. According to Faraday's electro
Product details
working principle:
SP-LDE series intelligent remote electromagnetic flowmeter, wireless intelligent GPRS meter readingAccording to Faraday's principle of electromagnetic induction, a pair of detection electrodes are installed on the tube wall perpendicular to the axis of the measuring tube and the magnetic field lines. When the conductive liquid moves along the axis of the measuring tube, it cuts the magnetic field lines and generates an induced potential. This induced potential is detected by the two detection electrodes, and the value is proportional to the flow rate. Its value is:
E=KBVD
In the formula:
E - Induced potential;
K - coefficient related to magnetic field distribution and axial length;
B - Magnetic induction intensity;
V - average flow velocity of conductive liquid;
D - electrode spacing; (Measuring the inner diameter of the tube)
The sensor uses the induced potential E as a flow signal, which is transmitted to the converter. After amplification, transformation, filtering, and a series of digital processing, the instantaneous and cumulative flow rates are displayed on a backlit dot matrix LCD. The converter has 4-20mA output, alarm output and frequency output, and is equipped with communication interfaces such as RS-485, and supports HART and MODBUS protocols.
Intelligent remote transmission electromagnetic flowmeter, wireless intelligent GPRS meter readingInstrument features
Full digital processing, strong anti-interference ability, reliable measurement, high accuracy, and a flow measurement range of up to 150:1;
Ultra low EMI switching power supply, suitable for a wide range of power supply voltage changes, with good EMI resistance performance;
Adopting a 16 bit embedded microprocessor, it has fast computing speed, high accuracy, programmable low-frequency rectangular wave excitation, improved stability of flow measurement, and low power consumption;
Adopting SMD devices and surface mount technology, the circuit reliability is high;
There are no movable parts or flow blocking components inside the pipeline, and there is almost no additional pressure loss during measurement;
On site, the range can be modified online according to the actual needs of the user;
The measurement results are independent of physical parameters such as flow velocity distribution, fluid pressure, temperature, density, viscosity, etc;
High definition backlit LCD display, fully Chinese menu operation, easy to use, simple to operate, easy to learn and understand;
■ It has digital communication signal outputs such as RS485, RS232, Hart, and Modbus; (Optional)
■ It has self checking and self diagnostic functions;
■ Hourly total volume recording function, which records the total flow volume in hours and is suitable for time-sharing measurement system (optional);
There are three integrators inside that can display the forward cumulative amount, reverse cumulative amount, and differential cumulative amount respectively. There is also a non power down clock inside that can record 16 power down times. (Optional);
Infrared handheld operator, 115KHZ communication speed, all functions of long-distance non-contact operation converter (optional).
Intelligent remote transmission electromagnetic flowmeter, wireless intelligent GPRS meter readingSelection of lining:
|
Lining material |
Performance |
scope of application |
|
chloroprene rubber Neoprene |
Good wear resistance, excellent elasticity, high tensile strength, and resistance to corrosion from low concentration acid-base salt media, but not resistant to corrosion from oxidizing media. |
‹ 80 ° C, general water, sewage, mud, slurry |
|
polyurethane Polyurethane |
Has excellent wear resistance, but slightly inferior acid and alkali resistance. |
60 ° C, neutral and strongly worn mineral slurry, coal slurry, and mud. |
|
PTFE PTFE |
The most stable material in terms of chemical properties, capable of withstanding boiling hydrochloric acid, sulfuric acid, nitric acid, aqua regia, concentrated alkali, and various organic solvents. |
180 ° C, strong corrosive media such as concentrated acid and alkali, sanitary media. |
|
F46 |
Chemical stability, electrical insulation, lubricity, non adhesiveness, and non flammability are similar to PTFE, but F46 material has better strength, aging resistance, temperature resistance, and low-temperature flexibility than PTFE. Good adhesion to metal, better wear resistance than PTFE, with good performance |
180 ° C, hydrochloric acid, sulfuric acid, aqua regia, and strong oxidants, sanitary media |
Intelligent remote transmission electromagnetic flowmeter, wireless intelligent GPRS meter readingSelection of electrode materials:
|
material |
Corrosion Resistance |
|
316L |
For nitric acid, 5% sulfuric acid at room temperature, boiling phosphoric acid, alkaline solution; Under certain pressure, media such as sulfurous acid, seawater, and acetic acid have strong corrosion resistance. |
|
Hastelloy HB |
Resistant to all concentrations of non oxidizing acids, bases, and non chlorinated hydrochloric acids such as hydrochloric acid, sulfuric acid, hydrofluoric acid, and organic acids at boiling point. |
|
Hastelloy HC |
Resistant to oxidizing acids such as nitric acid, mixed acids, or mixtures of chromic acid and sulfuric acid, as well as oxidizing salts and seawater |
|
titanium |
It can withstand corrosion from organic acids, alkalis, etc., but is not resistant to corrosion from relatively pure reducing acids (sulfuric acid, hydrochloric acid). However, if the acid contains oxidants (such as nitric acid and media containing Fe and Cu ions), corrosion is greatly reduced. |
|
tantalum |
It has excellent corrosion resistance similar to glass, except for hydrofluoric acid and concentrated sulfuric acid, and can withstand corrosion from almost all chemical media (including boiling point hydrochloric acid, nitric acid, and sulfuric acid below 175 ° C). It is not resistant to corrosion in alkali. |
Selection of caliber and flow rate
|
Nominal diameter (mm) |
Measurable flow range (m3/h) |
Effective measurement flow range (m3/h) |
Nominal diameter (mm) |
Measurable flow range (m3/h) |
Effective measurement flow range (m3/h) |
|
10 |
0.0142～3.3912 |
0.0848～2.826 |
300 |
12.717～3052 |
76.302～2543 |
|
15 |
0.0318～7.6302 |
0.1908～6.3585 |
350 |
17.31～4154 |
103.86～3461 |
|
20 |
0.0566～13.5648 |
0.3392～11.304 |
400 |
22.61～5425 |
135.65～4521 |
|
25 |
0.0883～21.195 |
0.5298～17.6625 |
450 |
28.62～6867 |
171.68～5722 |
|
32 |
0.1447～34.7258 |
0.8682～29.9382 |
500 |
35.33～8478 |
211.95～7065 |
|
40 |
0.2261～54.2592 |
1.3565～45.216 |
600 |
50.87～12208 |
305.2～10173 |
|
50 |
0.3533～84.78 |
2.1195～70.65 |
700 |
69.24～16616 |
415.4～13847 |
|
65 |
0.5970～143.28 |
3.5819～119.39 |
800 |
90.44～21703 |
542.6～18086 |
|
80 |
0.9044～217.03 |
5.4259～180.86 |
900 |
114.46～27468 |
686.7～22890 |
|
100 |
1.413 ～339.12 |
8.478～282.6 |
1000 |
141.3～33912 |
847.8～28260 |
|
125 |
2.2079～529.87 |
13.2468～441.56 |
1200 |
203.5～48833 |
1221~40694 |
|
150 |
3.1793～763 |
19.0755～635.85 |
1400 |
277~66467 |
1662~55389 |
|
200 |
5.652～1356 |
33.912～1130.4 |
1600 |
361.8～86814 |
2171~72345 |
|
250 |
8.8313～2119 |
52.9875～1766 |
1800 |
457.9～109874 |
2747~91562 |
Intelligent remote transmission electromagnetic flowmeter, wireless intelligent GPRS meter readingProduct spectrum
| model | caliber | |||||
| SP-LDE | 15~2600 | |||||
| code | Electrode material | |||||
| K1 | 316L | |||||
| K2 | HB | |||||
| K3 | HC | |||||
| K4 | titanium | |||||
| K5 | tantalum | |||||
| K6 | platinum alloy | |||||
| K7 | Stainless steel coated with tungsten carbide | |||||
| code | Lining material | |||||
| C1 | Polytetrafluoroethylene (F4) | |||||
| C2 | Perfluoroethylene propylene (F46) | |||||
| C3 | Polyfluoroethylene (FS) | |||||
| C4 | Polyvinyl rubber | |||||
| C5 | polyurethane rubber | |||||
| code | function | |||||
| E1 | Level 0.3 | |||||
| E2 | Level 0.5 | |||||
| E3 | Level 1 | |||||
| F1 | 4－20Madc, Load ≤ 750 Ω | |||||
| F2 | 0-3kHz, 5V active, variable pulse width, output high-end effective frequency | |||||
| F3 | RS485 interface | |||||
| T1 | Normal temperature type | |||||
| T2 | High temperature type | |||||
| T3 | Ultra high temperature type | |||||
| P1 | 1．0MPa | |||||
| P2 | 1．6MPa | |||||
| P3 | 4．0MPa | |||||
| P4 | 16MPa | |||||
| D1 | 220VAC±10％ | |||||
| D2 | 24VDC±10％ | |||||
| J1 | Integrated structure | |||||
| J2 | Split type structure | |||||
| J3 | Explosion proof integrated structure | |||||
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