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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
Gas mass flow controller (MFC) is used for accurate measurement and control of gas mass flow.Widely used in oil, gas, chemical, smelting, energy and other fields.The size of the sensor has been reduced to micron level and the sensitivity of the flow meter has been greatly improved by adopting microelectromechanical system chip processing technology, large-scale integrated circuit production technology and material growth technology.
Product Origin:
ChinaShipping Port:
Huangpu portLead Time:
SpotMOQ:
1Features
■Using microelectromechanical system chip processing technology and mass integrated circuit production technology and material growth technology, the size of the sensor has been reduced to micron level, which greatly improves the sensitivity of the flowmeter.
■ Multi - sensor integration is realized on a single chip, which greatly improves the measuring range ratio ( range degree ) of the flowmeter.
■ The zero point stability of the sensor is greatly improved compared with the traditional thermal mass flowmeter.
■ Combined with the microcomputer intelligent technology of the secondary instrument, the flowmeter has good repeatability, and the measurement is accurate and reliable.
■The simplified structure brought by technological progress makes the flow meter greatly reduce the pressure loss compared with the traditional mechanical instrument, and greatly reduces the energy consumption.
■ Micro power consumption design.Use LCD to display instantaneous flow rate and accumulated flow rate, clear and intuitive, easy to read.
■The product integrates electromagnetic compatibility design technology and has higher anti-interference ability.
■The flow meter is equipped with RS485 communication module, which can be centrally managed with the host computer network.
Product technical index and selection
1.Product technical index Table 1
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|
|
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Model |
LKM2120 |
LKM2190 |
LKM3030 |
LKM3060 |
LKM3080 |
LKM3120 |
LKM3190 |
Diameter DN |
12mm |
19mm |
3mm |
6mm |
8mm |
12mm |
19mm |
Flow range :L/Min |
0.3-300 |
0.8-800 |
0.15-50 |
0.5-50 |
1.2-120 |
3-300 |
8-800 |
Range ratio |
100:1 |
||||||
Precision |
±(1.5+0.5FS)% |
||||||
Repeatability |
±0.75 |
||||||
Maximum working pressure MPa
|
1.0 |
1.5 |
|||||
Working temperature |
-10~55℃ |
||||||
Humidity |
<95%RH(No ice, no dew) |
||||||
Working power supply |
8-24Vdc,35mA |
8-24Vdc,35mA |
|||||
Output |
4-20mA;RS485;pulse |
||||||
Mechanical interface |
NPT,BSPT(Can be customized according to user needs) |
||||||
Repeatability precision (%F·s) |
±0.2%F.S |
||||||
Input and output signal voltage |
0 ~ +5.00V |
||||||
Power supply |
+15V±5%50mA,-15V±5%200mA |
||||||
Working pressure range (MPa) |
0.05 ~ 0.3 |
||||||
Accuracy (%F·s) |
±1%F.S(20,30SLM ±2%F.S) |
||||||
Repeatability precision (%F·s) |
±0.2%F.S |
||||||
Flow range |
0~5,10,20,30,50,100,200,300,500SCCM 0~1,2,3,5,10,20,30 50 100 500 1000SLM |
2、Instrument selection
Table 2
Model code |
Thermal gas mass Flowmeter |
|||||||
LKM2 |
-¨ |
¨ |
¨ |
¨ |
¨ |
¨ |
¨ |
Code description |
LKM3 |
-¨ |
¨ |
¨ |
¨ |
¨ |
¨ |
¨ |
|
Diameter |
03 |
|
|
|
|
|
|
DN3mm |
06 |
DN6mm |
|||||||
08 |
DN8mm |
|||||||
12 |
DN12mm |
|||||||
19 |
DN19mm |
|||||||
Connection method |
0 |
Standard |
||||||
1 |
N-NPT(Can be customized according to user needs) |
|||||||
Output signal |
C1 |
4-20mA |
||||||
C2 |
Pulse |
|||||||
C3 |
RS485 |
|||||||
Whether the watch head is displayed with or not |
D1 |
No display at the head |
||||||
D2 |
Head instantaneous flow display |
|||||||
Explosion-proof grade |
E1 |
Non-explosion-proof type |
||||||
E2 |
Explosion-proof type |
|||||||
Measuring gas medium |
F1 |
Air |
||||||
F2 |
Oxygen |
|||||||
F3 |
Nitrogen |
|||||||
F4 |
Argon |
|||||||
F5 |
Carbon dioxide |
|||||||
F6 |
Sky oxygen |
Product structure size and installation
1.Structure size
LKM shape and installation dimensions are shown in the figure:
Table 3
Model specification |
Diamete d(mm) |
Interface |
L(mm) |
H(mm) |
W(mm) |
C(mm) |
LKM3030 |
3 |
1/8” |
96 |
125 |
35 |
36 |
LKM3060 |
6 |
1/4” |
104 |
127 |
35 |
36 |
LKM3080 |
8 |
3/8” |
106 |
134 |
35 |
50 |
LKM3120/LKM2120 |
12 |
1/2” |
142 |
137 |
40 |
50 |
LKM3190/LKM2190 |
19 |
3/4” |
182.5 |
150 |
40 |
70 |
2、Product installation
This product is recommended for horizontal installation.The arrow on the base indicates the direction of medium flow.The media inlet and outlet port connection must be correct, and the inlet side shall be equipped with a high efficiency filter.
Installation steps:
(1)After taking out the flowmeter, check its appearance to make sure there is no loss;
(2)Connect and clean pipes;
(3)Install the flowmeter on the pipe and note the following;
①In order to ensure the measurement accuracy of the Flowmeter, the upstream end of the Flowmeter should be connected first, the upstream straight section should meet the minimum requirement of 10DN, and the downstream straight section should meet the minimum requirement of 5DN;
②When the flowmeter is installed, it shall not contain any sealing material;
(4)Connect the power cable, pay attention to the polarity of the connection, and make sure the input dc voltage is at (5~12) VDC;
(5)If it is necessary to connect the signal line, make sure that the signal line is correctly connected to the corresponding user interface;
(6)Turn on the power and the LCD display is correct;
(7)Open the upstream and downstream valve of the pipeline and the flowmeter begins to measure the gas flow in the pipeline.
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