LWQ gas turbine flow meter is a velocity type flow meter used for precise measurement of gas flow. It has the advantages of light weight, simple structure, high measurement accuracy, good repeatability, wide measurement range and easy installation and maintenance. This flow meter is widely used in the flow measurement of various gases such as natural gas, urban gas, propane, butane, air and nitrogen. It plays an important role in high-precision scenarios such as natural gas trade settlement.
When the gas turbine flowmeter is measured online, its medium density changes with the change of temperature and pressure. In order to measure accurately, the temperature and pressure of the medium must be tracked and detected at the same time, and the volume flow under different working conditions must be converted into the volume flow under the standard state or the agreed state.
Since the flowmeter integrates temperature, pressure and flow sensors, tracks and detects the medium temperature and pressure on line, and performs automatic compensation and compression factor correction operation, it has excellent low-pressure and high-pressure metering performance, and is especially suitable for the measurement of various single-phase gases, such as natural gas and other gases.
2.Main Features
1) High precision, good repeatability, small pressure loss and good seismic performance.
2) Use high-quality bearings, with small friction resistance, good sealing performance and hand name.
3) Integrating a microprocessor, a flow sensor, a high-precision temperature sensor and a pressure sensor, directly measuring the flow rate, the temperature and the pressure of the measured gas, and automatically performing flow tracking compensation and compression factor correction operation.
4) The instrument has pulse signal and analog signal output, and can directly realize centralized collection and real-time management of computer data through RS485 communication interface or GPRS system.
5) Low power consumption, internal battery power supply or external power supply.
6) It has a real-time data storage function, which can prevent data loss during battery replacement or sudden power failure. In the power failure state, internal data can be stored permanently.
7) Equipped with real-time data storage function, it can prevent data loss in case of battery replacement or sudden power failure. In the event of a power outage, internal data can be permanently saved.
8) Historical records are saved, hourly records are saved for 3 months, daily records are saved for 3 years, and monthly records are saved for 10 years; Record the cumulative total amount, standard condition flow rate, operating condition flow rate, temperature, and pressure.
9) Can be used in conjunction with IC card prepaid system for easy trade settlement.
10) Explosion proof products have explosion-proof markings ExibIIBT4 and ExibIIBT6.
3.Technical Specification Table
LWQ gas turbine flow meter
Stainless steel
Aluminum alloy
Accuracy
1.5%
Measuring range
4-6000 m3/h
Diameter (MM)
DN25-DN300
Range ratio
1:10 , 1:20
Output
4-20mA / Pulse , RS485 (option)
Press
1.6Mpa, Option (2.5MPa, 4.0MPa, 6.3Mpa)
Power
24VDC or 3.6V Lithium battery
Connection
Flange（DN25-DN300), Thread (DN25-DN40)
Conditions of use
A. ambient temperature:-25 ~+80 ℃
B. medium temperature:-20 ~+60 ℃
C. relative humidity: 5-95%
D. atmospheric pressure: 86 kpa-106 kpa
Protection level
IP65
4.Technology Parameter
Model
Diameter
DN(mm)
Flow Range
(m3/h)
Max pressure loss（kPa）
Initial flow
（m3/h）
Connection
type
LWQ-25
25
4-40
1.0
1.3
Flange
LWQ-40
40
8-100
0.9
1.6
LWQ-40
10-150
2.0
2.4
LWQ-50
50
8-100
0.9
1.6
LWQ-50
10-150
2.0
2.4
LWQ-65
65
13-250
1.2
3.0
LWQ-65
20-400
2.2
5.0
LWQ-80
80
13-250
1.2
3.0
LWQ-80
20-400
2.2
5.0
LWQ-100
100
20-400
1.0
4.2
LWQ-100
32-650
2.5
6.7
LWQ-150
150
50-1000
1.1
10
LWQ-150
80-1600
2.3
12
LWQ-200
200
80-1600
1.5
16
LWQ-200
130-2500
2.4
20
LWQ-250
250
130-2500
1.3
22
LWQ-250
200-4000
2.5
25
LWQ-300
300
200-4000
1.5
25
LWQ-300
300-6000
2.5
35
5.Product application
Gas turbine flowmeters play a key role in the following fields due to their high precision, good repeatability, and wide range ratio:
1) Urban gas transmission, distribution and trade settlement
2) Petrochemicals and Industrial Production
3) Gas pipelines and the energy industry
4) Scientific experiments and tests
5) Other fields
· Metallurgical industry: Gas recovery metering for blast furnaces and converters.
· Power industry: Fuel gas metering for gas turbine power plants.
Tianjin Yiman Instrument Technology Co., Ltd. is a high-tech enterprise specializing in the research and development, manufacturing, sales and service of industrial automation instruments. Founded in 2014, the company is committed to ensuring the trust foundation in industrial production processes through innovative and reliable precision measurement technology. We firmly believe that with advanced fluid measurement solutions, we can help our customers achieve operational excellence and sustainable development.
