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Intelligent gas turbine flowmeter

NegotiableUpdate on 05/14
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Overview

The intelligent gas turbine flowmeter is a new type of intelligent instrument that integrates turbine flow sensors and display integration developed using an ultra-low power single-chip microcomputer. It adopts a dual row LCD on-site display and has obvious advantages such as compact structure, intuitive and clear readings, high performance, no external power interference, lightning resistance, and low cost. The instrument has three-point correction of instrument coefficient, intelligent compensation of instrument coefficient nonlinearity, and can be corrected on site.

Product Details

1Intelligent gas turbine flowmeterOverview

The gas turbine flowmeter is a new type of intelligent instrument that integrates the turbine flow sensor and display integration developed using an ultra-low power single-chip microcomputer. It adopts a dual row LCD on-site display and has obvious advantages such as compact structure, intuitive and clear readings, high performance, no interference from external power sources, lightning resistance, and low cost. The instrument has three-point correction of instrument coefficient, intelligent compensation of instrument coefficient nonlinearity, and can be corrected on site. Clear LCD display simultaneously shows instantaneous flow rate (4 significant digits) and cumulative flow rate (8 significant digits, with reset function). Keep all valid data intact for 10 years after power failure. This type of turbine flowmeter is an explosion-proof product with an explosion-proof rating of ExdIIBT6.

Gas turbine flow meters can be divided into LWGQ - □ B type and LWGQ - □ C type according to power supply mode and whether they have remote signal output.

LWQ - □ B type: The power supply uses a 3.2V10AH lithium battery (which can operate continuously for more than 4 years); No signal output function.

LWQ - □ C type: The power supply adopts 24VDC external power supply, outputs 4-20mA standard two-wire current signal, and can add RS485 or HART communication according to different on-site needs.

IIIntelligent gas turbine flowmeterProduct Features

1. The accuracy level can generally reach ± 1% R, ± 0.5% R, and the accuracy type can reach ± 0.2% R;

2. Repeatability, short-term repeatability can reach 0.05%~0.2%, precisely because of its good repeatability, flow meters are selected in trade settlement;

3. Equipped with three-point correction of instrument coefficients, intelligent compensation of instrument coefficient nonlinearity, and on-site correction capability

4. Keep all valid data intact for 10 years after power failure;

5. Wide range, with a medium to large caliber of up to 1:20 and a small caliber of 1:10;

6. Compact and lightweight structure, easy installation and maintenance, and high circulation capacity;

7. Suitable for pressure measurement, there is no need to open holes on the instrument body, making it easy to make pressure gauges;

8. There are various types of sensors, which can be designed according to user needs, such as low-temperature, bidirectional, downhole, mixed sand, etc;

9. Can be made into an insertion type, suitable for measuring large diameters, with low pressure loss, low price, can be removed without interruption, and easy installation and maintenance.

智能气体涡轮流量计

Parameters of gas turbine flowmeter

execution standard Measurement of gas flow in closed pipelines - Gas turbine flowmeter (GB/T8940-2003)
Instrument diameter (mm) and connection method 20. 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300 are connected by flanges
25, 40, and 50 can be connected using threaded connections
accuracy class ± 1.5% R (± 1% R needs to be customized)*
turndown ratio 1:10 ; 1:20 ; 1:30
Instrument material Table body: 304 stainless steel or cast aluminum
Impeller: anti-corrosion ABS or aluminum alloy
Converter: Cast aluminum
Terms of Use Medium temperature: -20 ℃ to+80 ℃
Environmental temperature: -30 ℃ to+60 ℃
Relative humidity: 5% to 90%
Atmospheric pressure: 86Kpa to 106Kpa
working power supply 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 batteries, which can work normally when the battery voltage is between 2.0V and 3.0V.
Under voltage indication occurs when the voltage is below 2.0
Whole machine energy consumption External power supply:<1W
Internal power supply: 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 function ⑤ Start stop record, diary record, and fixed time interval record
Signal wiring port Internal thread M20 × 1.5 or other
Explosion-proof rating Exd Ⅱ BT6 or Exia Ⅱ CT4
protection level IP65

Reference for flow range of gas turbine flowmeter

Nominal Diameter model Standard range Expand range Conventional voltage withstand level Special pressure grade Installation method
(mm) (m³/h) (m³/h) (Mpa) (Mpa)
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
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
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