⎝⎛星力捕鱼⎞⎠

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Address: Xiongyi, Jinhe Road, Jinhu County, Jiangsu Province
Lunan
Phone: 0517-86900901
0517-86900921
0517-86900920
Fax: 0517-86900902
Postcode: 211600
http://zzyfwh.com
Email: chinadongxiang@163.com
Flow meter
LWQ series gas turbine flowmeter


LWQ series gas turbine flowmeters Gas turbine flowmeters are widely used for the measurement of natural gas, coal gas, liquefied gas, light hydrocarbon gas and other gases.

  • Measuring medium: gas
  • Measuring range: Standard measuring range: 2.5-4000m³ / h Extended measuring range: 4-6500m³ / h
  • Output signal: pulse signal, 4-20mA current signal, control signal
  • Accuracy grade: ± 1.5% R (± 1% R needs special)
  • Medium temperature: -20 ℃ ~ + 80 ℃
  • Explosion-proof grade: ExdⅡBT6 or ExiaⅡCT4
  • Protection level: IP65
  • User rating:
  • Quality guarantee: The company strictly implements the relevant national warranty regulations, and the product warranty is one year.
  • After-sales service: Jiangsu Dongxiang Instrument provides delivery and provides after-sales service.

Gas Turbine Flowmeter Product Overview
LWQ series gas turbine flowmeter is an integrated design of temperature, pressure, flow sensor and intelligent flow totalizer, which is developed by absorbing the advanced technology of domestic and foreign flow instruments to optimize the design and integrating theories of gas mechanics, fluid mechanics and electromagnetics. A new generation of high-precision, high-reliability gas precision metering instrument with excellent low-pressure and high-pressure metering performance, multiple signal output methods, and low sensitivity to fluid disturbances, widely applicable to natural gas, coal gas, liquefied gas, light hydrocarbon Measurement of gases such as gases.
This product has been approved by the national quality inspection department for explosion-proof products according to GB3836.2000 "Electrical Equipment for Explosive Gas Environments Part 1: General Requirements", GB38362.2-2000 "Electrical Equipment for Explosive Gas Environments Part 2: Flameproof" d " "And GB3836.4-2000" Electrical Equipment for Explosive Gas Environments Part 4: Intrinsically Safe "i" "passed the standard inspection. The explosion-proof marks are ExdⅡBT6 (flame-proof type) and EiaⅡCT6 (intrinsically safe type). It is suitable for hazardous locations in Zones 1 and 2 of 0 (intrinsically safe type) containing explosive gas mixtures in the temperature groups T1 to T6 of IIA, IIB, and IIC.
Product Features of Gas Turbine Flowmeter

  • Adopt new sensor, low starting flow, small pressure loss, good anti-vibration and anti-pulsation flow performance, not easy to corrode, good reliability, long service life;
  • Adopt new type microprocessor and high-performance integrated chip, high calculation precision, powerful function and superior performance;
  • Adopt advanced micro-power high-tech, low power consumption. Not only can run with internal battery for long-term power, but also can run with external power supply;
  • According to the flow frequency signal, the meter coefficient can be linearly corrected automatically in eight segments, and the calculation accuracy of the meter can be improved according to user needs;
  • Using EEPROM data storage technology, with historical data storage and query functions, three historical data recording methods are available for users to choose;
  • The meter head can be rotated by 180 °, which is simple and convenient to install and use;
  • High accuracy, generally up to ± 1.5% R, ± 1.0% R;
  • Good repeatability, short-term repeatability can reach 0.05% ~ 0.2%, precisely because of its good repeatability, it is the preferred flowmeter in trade settlement;
  • Can detect the temperature, pressure and flow of the detected gas, can automatically track and compensate the flow, and display the gas flow under standard conditions (Pn = 101.325KPa, Tn = 293.15K): real-time query of temperature, pressure, time, date, etc. data.

Technical parameters of gas turbine flowmeter


Implementation standards
Measurement of Gas Flow in Closed Pipes—Gas Turbine Flowmeter (GB / T8940-2003)
Instrument caliber (mm) and connection method 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300 with flange connection
25, 40, 50 can be threaded
Accuracy class ± 1.5% R (± 1% R needs to be customized) *
Range ratio 1:10; 1:20; 1:30
Instrument material Body: 304 stainless steel or cast aluminum
Impeller: anti-corrosion ABS or high-quality aluminum alloy
Converter: cast aluminum
Conditions of Use Medium temperature: -20 ℃ ~ + 80 ℃
Ambient temperature: -30 ℃ ~ + 60 ℃
Relative humidity: 5% ~ 90%
Atmospheric pressure: 86Kpa ~ 106Kpa
Working power A. External power supply: + 24VDC ± 15%, ripple ≤ ± 5%, suitable for 4-20mA output, pulse output, RS485, etc.
B. Internal power supply: 1 set of 3.0V10AH lithium battery, the battery voltage can work normally when 2.0V ~ 3.0V.
Under voltage indication when voltage is below 2.0
Energy consumption External power: <1W
Internal power: average power consumption ≤ 1W, can be used continuously for more than three years.
Signal output function Pulse signal, 4-20mA current signal, control signal
Communication output function RS485 communication
Real-time recording function⑤ Start and stop records, daily records, and regular interval records
Signal connection Internal thread M20 × 1.5 or other
Explosion-proof grade ExdⅡBT6 or ExiaⅡCT4
Protection class IP65

Measurement range and working pressure of gas turbine flowmeter


Nominal diameter
(Mm)
model Standard range
(M³ / h)
Extended range
(M³ / h)
Conventional withstand voltage rating
(Mpa)
Special high voltage grade
(Mpa)
Installation method
DN20 LWQ-20 A 2.2-25 B 4-40 1.6 2.5, 4.0 Flange
DN25 LWQ-25 A 2.2-25 B 4-40 1.6 2.5, 4.0 Flange (thread)
DN32 LWQ-32 A 5-50 B 6-60 1.6 2.5, 4.0 Flange
DN40 LWQ-40 A 5-50 B 6-60 1.6 2.5, 4.0 Flange (thread)
DN50 LWQ-50 A1 6-65 B1 5-70 1.6 2.5, 4.0 Flange
LWQ-50 A2 10-100 B2 8-100
DN65 LWQ-65 A 15-200 B 10-200 1.6 2.5, 4.0 Flange
DN80 LWQ-80 A1 13-250 B 10-160 1.6 2.5, 4.0 Flange
LWQ-80 A2 20-400 Flange
DN100 LWQ-100 A1 20-400 B 13-250 1.6 2.5 Flange
LWQ-100 A2 32-650 Flange
DN125 LWQ-125 1 25-700 B 20-800 1.6 2.5 Flange
DN150 LWQ-150 A1 32-650 B 80-1600 1.6 2.5 Flange
LWQ-150 A2 50-1000 Flange
DN200 LWQ-200 A1 80-1600 B 50-1000 1.6 ______ Flange
LWQ-200 A2 130-2500 Flange
DN250 LWQ-250 A1 130-2500 B 80-1600 1.6 ______ Flange
LWQ-250 A2 200-4000 Flange
DN300 LWQ-300 1 200-4000 B1 130-2500 1.6 ______ Flange
B2 320-6500 1.6

Gas turbine flowmeter product classification


Product Image
Instrument model LWQ-E LWQ-D
Signal output 4-20mA Optional 4-20mA / pulse
Power supply 24VDC ± 15% 24VDC ± 15% + lithium battery
Accuracy class 1.5 ~ 1.0 level 1.5 ~ 1.0 level
Measuring range Standard or extended range Standard or extended range
monitor Have Have
Temperature and pressure compensation no Have
Communication Interface no RS485
Real-time recording no Have
Instrument material Aluminum or stainless steel Aluminum or stainless steel
Explosion-proof grade ExdIIBT6 or ExiaIICT4 ExdIIBT6 or ExiaIICT4
Protection class IP65 IP65
Machine power consumption <1W <1W
Instrumentation DN25 ~ DN300 DN25 ~ DN300
Installation method Flange mounting Flange mounting
Medium temperature -20 ℃ ~ 80 ℃ -20 ℃ ~ 80 ℃
Ambient temperature -30 ℃ ~ 60 ℃ -30 ℃ ~ 60 ℃