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Smart gas Roots (waist wheel) flow meter Intelligent gas waist wheel (Roots) flowmeter is a new generation flowmeter that integrates flow, temperature, and pressure detection functions, and can automatically compensate for temperature and pressure. Gas is a compressible fluid, and its volume value is closely related to temperature and pressure. In order to unify standards for both parties, it is necessary to convert the actual volume into a standard volume under reference conditions (101.325 kPa 20°C). In order to achieve this purpose, the smart gas waist wheel flowmeter can accurately correct the volume of gas; it is an ideal instrument for gas measurement in urban gas, petroleum, chemical, electric power, metallurgy and other industries. more
TUF Series Portable Ultrasonic Flow Meter The TUF series ultrasonic flow meter utilizes the principle of low voltage and multiple pulsation time difference, adopts the high-precision and ultra-stable differential transmission of double-balanced signals and differential receiving digital detection technology to measure the acoustic wave transmission time in both the downstream and counter-current directions, and calculates the flow rate according to the time difference.It has the characteristics of good stability, small zero drift, high measuring accuracy and high anti-interference of measuring range over wide. more
LDB Intelligent Type Electromagnetic Flow Meter The LDB intelligent type electromagnetic flow meter consists of a sensor and a converter. It is based on Faraday's law of electromagnetic induction, which is used to measure the volume flow of conductive liquid with conductivity greater than 5μs/cm. It is an inductive meter for measuring the volume flow of conductive medium. In addition to measuring the volume flow of general conductive liquid, it can also be used to measure the volume flow of strong corrosive liquids such as strong acid and alkali and uniform liquid-solid two-phase suspension liquid such as slurry, pulp and paper pulp. more
LKQ Thermal Gas Mass Flow Meter LKQ thermal gas mass flow meter is a mass flow measurement and monitoring meter,which can detect air, natural gas, hydrogen, oxygen, chlorine, nitrogen and ammonia, ammonia, coal gas, phosgene, flue gas and various chemical mixtures, without pressure and temperature compensation. It can be widely used in petroleum, chemical, metallurgy, electric power, water treatment, paper, food, medicine, cement, textile and various production, scientific research units for process control and gas flow measurement. Widely used in: flow measurement of steel plant, coking plant gas. more
LLGQ Gas Roots /Waist Wheel Flow Meter The gas roots flowmeter has been used as a volumetric meter for more than 100 years. With the features such as high precision, wide range, small volume, light weight, convenient installation and maintenance, reliable and durable service life, it is widely used in natural gas, coal gas, air and other gas flowmeters.It is an ideal flowmeter device for urban gas, oilfield chemical, scientific research and other departments at home and abroad. more
High Precision Gas Turbine Flow Meter Gas turbine flowmeter is a new generation of high precision, high reliability gas precision measuring meter integrating temperature, pressure, flow sensor and intelligent flow totalizer developed by the advanced technology of flow meter at home and abroad, optimized by theories of gas mechanics, fluid mechanics and electromagnetics, which has excellent low pressure and high pressure metering performance. more
LUGK Multi Variable Type Vortex Flow Meter Mass vortex flowmeter, simple to install. Connection mode: flange and clamping connection. It has superior reliability and stability due to no movable part, and the detecting portion has only a simple configuration of the vortex generator. Low pressure loss, no leakage point, and high safety performance. Robust sensor construction for high temperature (up to 3500 ° C), high pressure fluid. more
LUGC Steam Gas And Liquid Insert Type Vortex Flow Meter The Insert Type vortex flowmeter is simple in structure and can be made into online installation type.Applicable to large diameter gas, steam flow measurement, etc.Easy installation, no pipe design. more
LUGB Flow Instrumentation Vortex Flow Meter The vortex flowmeter is a speed type flow instrument which has a wide range of uses. It is suitable for flow metering, measurement and control of liquids, steam and most gases. more
Intelligent electromagnetic flowmeter is composed of sensors and converters.It is based on Faraday's law of electromagnetic induction to work, used to measure the volume flow of conductive material, is a speed meter.
Product Origin:
ChinaShipping Port:
Huangpu portLead Time:
SpotMOQ:
1features
●The measurement is not affected by fluid density, viscosity, temperature, pressure, and conductivity.
●Open flow parts in measuring pipe, no pressure loss, lower requirements of straight pipe section, unique adaptability to slurry measurement.
●The flow meter has no mechanical movable parts, and the converter is of optimized design, compact structure and easy to install. The converter and sensor are interchangeable, and the measurement range can be changed freely (0.5m/s-10m/s).
●Reasonable selection of electrode and lining material, that is, good corrosion resistance and wear resistance.
●Full digital processing, strong anti-interference ability, reliable measurement, high precision, wide flow measurement range.
●Ultra low EMI switching power supply, suitable for power supply voltage range, EMI resistance is good.
●The 16-bit embedded microprocessor is adopted, which has the advantages of fast operation speed, high precision, low frequency rectangular wave excitation, and programmable excitation frequency setting, so as to improve the stability of flow measurement and low power consumption.
●There are no moving parts or open flow parts in the pipe, and there is almost no additional pressure loss in the measurement.
●The measuring range can be modified online according to the actual needs of users.
High definition backlight LCD display, full Chinese menu operation, easy to use, easy to operate, easy to learn and easy to understand.
●With RS485,R5232, Hart and Modbus profibus-dp and other digital communication signal output (optional).
●It has the function of self-examination and self-diagnosis.
●The function of hourly total volume recording, which records the total flow volume in hours, is applicable to time-sharing measurement system (optional).
●Inside, there are three calculators which can display the forward cumulant, reverse cumulant and difference product respectively. Inside, there is a power off clock which can record the power off time for 16 times (optional).
●Infrared handheld operator, 115KHz communication rate, remote non-contact operation converter all functions (optional).
●Insert type electromagnetic flowmeter, easy to install, can not break the flow, the site can be with pressure hole, has the absolute advantage of installation and price advantage.
●Insert type electromagnetic flowmeter, the flow detection is only related to the insertion depth, so the flowmeter has wide versatility and strong interchangeability.One model can be used for fluid measurement requirements of pipes of various specifications.
Meter Selection
Product selection Table 1
Model |
Description |
|||||||||
LDB- |
□ |
□ |
□ |
□ |
□ |
□ |
□ |
□ |
□ |
Full pipe type electromagnetic flowmeter |
LDC- |
|
|
|
|
|
|
|
|
|
Plug-in type electromagnetic flowmeter |
Nominal diameter |
|
|
|
|
|
|
|
|
|
10-2200mm |
Assembly |
S |
Integrated type |
||||||||
L |
Separate type |
|||||||||
Electrode material |
M |
316L Stainless steel |
||||||||
T |
Ti (titanium) |
|||||||||
D |
Ta(tantalum) |
|||||||||
Hb |
Hastelloy-B |
|||||||||
Hc |
Hastelloy-C |
|||||||||
P |
Pt platinum |
|||||||||
w |
Tungsten carbide |
|||||||||
Output mode |
0 |
No output |
||||||||
1 |
4-20mA/1-5KHz |
|||||||||
2 |
4-20mA |
|||||||||
Lining material |
X |
Rubber |
||||||||
F |
PTFE |
|||||||||
P |
Polyethylene |
|||||||||
J |
Polyurethane rubber |
|||||||||
Local display |
0 |
No local display |
||||||||
1 |
Local display |
|||||||||
Communication mode |
0 |
No communication |
||||||||
1 |
RS485 |
|||||||||
2 |
RS232 |
|||||||||
3 |
Modbus |
|||||||||
4 |
Hart |
|||||||||
Grounding ring |
0 |
Without grounding ring |
||||||||
1 |
With grounding ring |
|||||||||
2 |
Ground electrode |
|||||||||
Upper limit flow |
(n) |
Upper limit flow (range) m3/h |
Example: a local display electromagnetic flowmeter was selected to measure sewage. The user's pipeline was DN50, which required rubber material village, stainless steel electrode, 4-20ma output, no communication, and the online flow was 30m3/h.The model will be LDB-50s - m1x100-30.
Appearance and mounting dimensions of electromagnetic flowmeter
1、Full tube electromagnetic sensor size parameters
Ⅰ Sensor dimensions
Ⅱ Sensor mounting dimensions Table 2
Nominal diameter (mm) |
L(mm) |
D(mm) |
K(mm) |
H(mm) |
H*(mm) |
n×d(mm) |
Pressure rating |
Special pressure rating |
10 |
200 |
90 |
60 |
310 |
220 |
4×Ф14 |
4MPa |
Below 16MPa |
15 |
200 |
95 |
65 |
310 |
220 |
4×Ф14 |
||
20 |
200 |
105 |
75 |
315 |
225 |
4×Ф14 |
||
25 |
200 |
115 |
85 |
325 |
235 |
4×Ф14 |
||
32 |
200 |
140 |
100 |
325 |
235 |
4×Ф18 |
1.6MPa |
|
40 |
200 |
150 |
110 |
340 |
250 |
4×Ф18 |
||
50 |
200 |
165 |
125 |
355 |
265 |
4×Ф18 |
||
65 |
200 |
185 |
145 |
375 |
285 |
4×Ф18 |
||
80 |
250 |
200 |
160 |
385 |
295 |
8×Ф18 |
||
100 |
250 |
220 |
180 |
415 |
325 |
8×Ф18 |
||
125 |
250 |
250 |
210 |
445 |
355 |
8×Ф18 |
||
150 |
300 |
285 |
240 |
475 |
385 |
8×Ф18 |
||
200 |
350 |
340 |
295 |
505 |
415 |
12×Ф22 |
2.5MPa |
|
250 |
450 |
395 |
350 |
590 |
500 |
12×Ф22 |
1.0MPa |
|
300 |
500 |
445 |
400 |
645 |
555 |
12×Ф22 |
||
350 |
500 |
505 |
460 |
695 |
605 |
16×Ф22 |
||
400 |
500 |
565 |
515 |
745 |
655 |
16×Ф26 |
||
450 |
550 |
615 |
565 |
825 |
735 |
20×Ф26 |
||
500 |
550 |
670 |
620 |
878 |
788 |
20×Ф26 |
||
600 |
600 |
780 |
725 |
988 |
898 |
20×Ф30 |
||
700 |
700 |
860 |
810 |
1095 |
1005 |
24×Ф30 |
0.6MPa |
1.0MPa |
800 |
800 |
975 |
920 |
1208 |
1118 |
24×Ф34 |
||
900 |
900 |
1075 |
1020 |
1310 |
1220 |
28×Ф34 |
||
1000 |
1000 |
1175 |
1120 |
1413 |
1323 |
28×Ф36 |
||
1200 |
1200 |
1450 |
1340 |
1525 |
1435 |
32×Ф33 |
||
1400 |
1400 |
1630 |
1560 |
1735 |
1645 |
36×Ф36 |
||
1600 |
1600 |
1830 |
1760 |
1965 |
1875 |
40×Ф36 |
||
1800 |
1800 |
2045 |
1970 |
2155 |
2065 |
44×Ф39 |
||
2000 |
2000 |
2265 |
2180 |
2365 |
2275 |
48×Ф42 |
Electromagnetic Flowmeter Installation Precautions
1. Installation location
The pipe must be completely filled with liquid, which is critical, otherwise the flow display will be affected and measurement errors will occur. The pipe structure must be designed to ensure that the flow pipe is always filled with fluid.When the fluid is diverted or combined with solid particulate deposits,vertical installation is recommended, but for vertical installations,it need to follow the fluid direction from bottom to top to ensure that the pipe is full of fluid.
Avoid air bubbles. If air bubbles enter the flow pipe, the flow display will be affected ,and measurement errors will occur. When the fluid contains air bubbles, the pipe must be designed to prevent air bubbles from accumulating in the flow pipe. If there is a valve near the flow measuring pipe, place the pipe upstream of the valve as much as possible to avoid pressure reduction and bubble generation.
2. Installation direction
If the electrode is perpendicular to the ground, bubbles gathered at the top or deposits deposited at the bottom can cause measurement errors. Install the separate type flow pipe junction box and the integrated type converter on top of the pipe system to prevent water from entering.
3.Direct pipe section requirements
Do not install anything near the flow pipe that may interfere with the magnetic field, the induced signal voltage, and the flow field distribution of flow pipe. In general,it is necessary to ensure a 5D of straight pipe section for the upstream and a 3D of straight pipe section for the downstream. If there are interference flow parts such as elbows and valves, the length of the straight pipe section required should be larger. It is highly recommended to install the valve at the downstream end to avoid flow fluctuations in the flow pipe and to avoid counting from the empty pipe status.
Maintain stable fluid conductivity
Avoid installing the flowmeter in a position where fluid conductivity is not uniform.If chemicals are injected near the upstream end of the electromagnetic flowmeter, flow visualization may be affected.To avoid this situation, it is recommended to change the chemical injection to the downstream end of the flowmeter.If it is necessary to inject from the upstream end, use a straight pipe section long enough (about 50D) to ensure that the fluid is thoroughly mixed with the chemicals.
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