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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
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.
Product Origin:
ChinaItem NO.:
LDB-40-S-M-1-F- 1-1-Shipping Port:
Huangpu portColor:
Blue/Dark blueLead Time:
SpotPayment:
308MOQ:
1Price:
$249.5/setPrice Range:
1-5/249.5$Features
■ Full digital processing, strong anti-interference ability, reliable measurement, high precision, flow measurement range can reach 150:1;
■ Ultra-low EMI switching power supply, large voltage range of suitable power supply, good anti-EMI performance;
■Use 16-bit embedded microprocessor, with fast operation speed, high precision, and programmable low-frequency rectangular wave excitation,improving the stability of flow measurement and low power consumption;
■Use SMD parts and surface mount (SMT) technology, high circuit reliability;
■ No moving parts in the pipe, no flow blocking parts, and there is almost no additional pressure loss in the measurement;
■ It can modify the range online on site according to the actual needs of users;
■The measurement results are independent of the physical parameters such as flow velocity distribution, fluid pressure, temperature, density, viscosity;
■High-definition backlit LCD display, full Chinese menu operation, easy to use, easy to operate, easy to learn and understand;
■With digital communication signal output such as RS485, RS232, Hart and Modbus (optional);
■With self-test and self-diagnosis function;
■ With hourly total recording function, recording the total amount of flow in hours, suitable for time-sharing measurement (optional);
■ There are three Integrators, which can display the forward accumulation amount ,the reverse accumulation amount and the difference calculation amount respectively.. There is an internal power-down clock, which can record 16 power-down times. (optional);
■ With infrared handheld operator, 115KHZ communication rate, it can operate all functions of converter remotely without contact (optional).
Instrument Classification
1.According to the instrument structure, the vortex flowmeter can be divided into three categories, namely:
■ Full pipe type electromagnetic flow meter
① No resistance parts in the measuring pipe, no pressure loss.
① With simple structure, the electromagnetic flowmeter measuring pipe can use different lining according to different qualifications, and the reliability is high.
■Separate type electromagnetic flowmeter
The converter and the main body are installed separately, which is convenient for centralized installation and easy to read data.
■Plug-in type electromagnetic flowmeter
It is widely applicable to the flow measurement of large caliber conductive liquid medium in various industries.
①Wide nominal diameter range, suitable for all caliber pipes between DN150~DN3000.
②The sensor uses novel excitation mode, low power consumption, stable zero point and high precision. The flow range can reach 1500:1
Technical Parameters
(1) Electromagnetic sensors general specifications Table 1
|
Standard Nominal diameter (mm) (Special specifications can be customized) |
JB/T 9248-2015 Pipe type PTFE lining: DN10~DN600; Pipe type rubber lining ink: DN40~DN2200 Plug-in type: DN150~DN3000 |
|
Flow direction Range ratio Repeatability error |
Positive and negative 20:1 ±0.1% of the measured value |
|
Accuracy grade |
pipe type: 0.5 grade, 1.0 grade; Plug-in: 1.5 grade, 2.0 grade |
|
Measured medium temperature |
Normal rubber lining: -20~+60°C High temperature rubber lining: -20~+90°C PTFE lining: -30~+100°C High temperature tetrafluoro lining: -20~+180°C |
|
Rated operating pressure (high pressure can be customized) |
DN10-DN150：≤1.6MPa DN200-DN350：≤1.0MPa DN400-DN1000：≤0.6MPa DN450-DN2200：≤0.25MPa |
|
Flow rate range Conductivity range |
0.5-10m/s The conductivity of the measured fluid is ≥5μs/cm |
|
Signal output |
4-20mA (load resistance 0~750Ώ), pulse/frequency, control level |
|
Communication output
Power supply |
RS485 communication MODBUS protocol, HART communication interface 220VAC or 24VDC |
|
Required straight pipe length |
Upstream ≥5DN, downstream ≥2DN |
|
Connection mode |
The flowmeter and the pipe use flange connection, and the flange meets the national standard: GB/T9115.1-2000 |
|
Explosion-proof grade Protection grade Ambient temperature Relative temperature Total power consumption |
ExdIICT6 IP65, it can be customized up to IP68 -25~+60℃ 5%~95% Less than 20W |
Meter Selection
(1) Product selection Table 2
|
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 |
Stainless steel |
||||||||
|
T |
Ti (titanium) |
|||||||||
|
D |
Ta(tantalum) |
|||||||||
|
H |
Hastelloy |
|||||||||
|
P |
Pt platinum |
|||||||||
|
N |
Ni nickel |
|||||||||
|
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 communication (MODBUS protocol) |
|||||||||
|
2 |
HART communication |
|||||||||
|
3 |
GPRS wireless communication |
|||||||||
|
Grounding ring |
0 |
Without grounding ring |
||||||||
|
1 |
With grounding ring |
|||||||||
|
2 |
Ground electrode |
|||||||||
|
Upper limit flow |
（n） |
Upper limit flow (range) m3/h |
||||||||
Installation Dimension
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. Straight pipe Sections Requirements and Environmental 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.
4. Maintain stable fluid conductivity
Avoid installing the flowmeter in the position of uneven fluid conductivity. If chemicals are injected near the upstream end of the electromagnetic flowmeter, it may affect the flow display. To avoid this, it is recommended to inject chemicals to the downstream end of the flowmeter. If it must be injected from the upstream end, use a long enough straight pipe (approximately 5D) to ensure that the fluid is well mixed with the chemicals.
Previous :
LD Intelligent Type Magnetic Flow MeterNext :
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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 description The LDB intelligent type electromagnetic flowmeter 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. Itis 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. It is wdely used for flow measurement of petroleum, chemical, metallurgy, textile, papermaking, environmental protection, food and other industrial sectors and municipal management, water conservancy construction, rivers and other fields.
The LDB intelligent type electromagnetic flowmeter 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. It is wdely used for flow measurement of petroleum, chemical, metallurgy, textile, papermaking, environmental protection, food and other industrial sectors and municipal management, water conservancy construction, rivers
Full digital processing, strong anti-interference ability, high reliability and high accuracy. Suitable for almost all conductive liquids. No moving parts, no flow resistance parts, small pressure loss. 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.
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. It is widely used for flow measurement of petroleum,chemical,metallurgy,textile,paper making,environmental protection,food and other industrial sectors and municipal management,water conservancy construction, rivers and other fields.
Precision:±(2.0+0.2FS)% Repetitive:±0.5% Maximum working pressure:0.2MPa
LUXQ series intelligent precession vortex flowmeter can be widely used in industries such as petroleum, chemical, electric power, metallurgy, urban gas supply to measure various gas flows, which is the first choice for oil and gas transmission and metering and trade measurement.
1. High-definition LCD display; 2. Three-key parameter setting and debugging; 3.5-segment polyline correction function for non-linear signals ; 4. Linear current output; 5. Frequency pulse output: DC power can be used to supply power to the pulse output circuit. At this time, the meter can convert the mV pulse signal output by the turbine sensor into a standard TTL pulse,which can be used for linear signal users debugging.
LWGQ Gas Turbine Flowmeter is an instrument that can measure temperature, volume, flow sensing and intelligent flow integrator all in one. Ithas a good performance of low pressure and high pressure measurement, also has a variety of signal output modes and lowsensitivity to fluid disturbances. It isused in natural gas, coal gas, liquefied gas, light hydrocarbon gas and gas metering. It isLow price, high integration, small size, especially suitable forusing in conjunctionwith secondary display, PLS, DCS and other computer control systems.
LKQ series thermal type gas mass flowmeter 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.
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